Newtec Mod 2080

NTC/2080/Zx DVB modulator Newtec Cy

NTC/2080/Ax/UMN - EDIT : 5 PAGE : 1

NTC/2080/Ax

DVB Modulator with

NTC/33xx/xx input-interface

and

NTC/3631/AZ IFL feedthrough module

for

NTC/2505/xL OUTDOOR CONVERTER

NewtecINNOVATIVE SOLUTIONS FOR SATELLITE COMMUNICATIONS



TO WHOM IT MAY CONCERN _____________________________________________________

EC DECLARATION OF CONFORMITY

_____________________________________________________ We,

NEWTEC CY nv. declare that our product DVB Modulator NTC/2080/Ax to which this declaration relates is in conformity with : the requirements of the EMC Directive 89/336/EEC (1) the requirements of the Low Voltage Directive 73/23/EEC (2) the requirements of the CE Marking Directive 96/68/EEC in accordance with the relative standards listed below : (1) : EN 50081-1:92 Electromagnetic Compatibility - Generic emission standard part 1 : residential, commercial and light industrial environment EN 50082-1:92 Electromagnetic Compatibility - Generic immunity standard part 1 : residential, commercial and light industrial environment (2) : EN 60950:92 incl. A1-A4 Safety of information technology equipment Done at Antwerp, on March 23, 1999 Dirk Breynaert, Managing Director _____________________________________________________ NEWTEC CY nv. Laarstraat 5 B-9100 Sint-Niklaas Belgium. Tel:32.(0)3.7806500 Fax:32.(0)3.7806549



Relevant EMC information

(to FCC rules)

This equipment has been tested and found to comply with the limits for a class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.



SAFETY Please read this chapter before installation and use of the instrument This equipment is provided with a protective earthing ground incorporated in the power cord. The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. Any interruption of the protective conductor, inside or outside the instrument, is likely to make the instrument dangerous. Intentional interruption is prohibited. The instrument described in this manual is designed to be used by properly trained personnel only. Only qualified personnel who are aware of hazards involved shall carry out adjustment, maintenance and repair of the exposed equipment. No operator serviceable parts inside. Refer servicing to qualified personnel. To prevent electrical shock, do not remove covers. For the correct and safe use of the instrument, it is essential that both operating and servicing personnel follow generally accepted safety procedures in addition to the safety precautions specified in this manual. Warning and caution statements and/or symbols are marked on the instrument when necessary. Whenever it is likely that safety protection is impaired, the instrument must be made inoperative and secured against unintended operation. The appropriate servicing authority must be informed. For example, safety is likely to be impaired if the instrument fails to perform the intended measurements or shows visible damage. Rack mounting instructions: When mounted in a standard 19-inch equipment rack, the modulator must be sustained by L-profiles. Fixing the modulator with 4 front panel screws only will damage it and could result in injury. WARNINGS • Do not use the equipment in damp surroundings.

Avoid direct contact with water. • Never place the equipment in direct sunlight. • Never cover the fan opening when the equipment is in use, as this will impede the

ventilation required. • The outside of the equipment may be cleaned using a lightly dampened cloth. Do not use

any cleaning liquids containing alcohol, methylated spirit or ammonia etc.

• For continued protection against fire hazard, replace line fuses only with same type and rating (5 x 20 mm, 3.15 A 250 V type T or slow-blow).



CONTENTS

0. ABBREVIATIONS ................................................................................................................ 11

1. TECHNICAL DESCRIPTION ............................................................................................... 12

1.1. Functional Diagram ........................................................................................................... 12

1.2. Software History................................................................................................................ 14

1.3. Product Specification (Data Sheets) ................................................................................. 14

1.4. Output Level...................................................................................................................... 14

1.5. Spurious Performance for modulated carriers in 4 kHz .................................................... 29

1.6. Satellite Operation Specifications ..................................................................................... 29

1.7 Optimal Operation for Minimum Spurious.......................................................................... 30

2. INSTALLATION.................................................................................................................... 31

2.1. Inspection and Test........................................................................................................... 31

2.2. Functional Self-Test .......................................................................................................... 32

2.3. Mounting............................................................................................................................ 32

2.4. Recommended Default Setting ......................................................................................... 33 2.4.1. System Parameters .................................................................................................... 33 2.4.2. Control Parameters .................................................................................................... 34 2.4.3. Operational Configuration : DVB Standard ................................................................ 34 2.4.4. Operational Configuration : DVB Standard with Unstable Clock................................ 35 2.4.5. Operational Configuration : Non-MPEG Source ........................................................ 35



3. FRONTPANEL DESCRIPTION ........................................................................................... 36

3.1. Liquid Crystal Display........................................................................................................ 36

3.2. Keypad .............................................................................................................................. 37

3.3. Indicator LEDs................................................................................................................... 38

4. BACKPANEL........................................................................................................................ 39

4.1. Power Supply .................................................................................................................... 39

4.2. Main On/Off Switch ........................................................................................................... 39

4.3. Fans .................................................................................................................................. 39

4.4. NTC/3631/Az Converter Module....................................................................................... 40

SW1: enable internal L-band transmit (see 5.2.8.) .................................................................. 40

SW2: enable external L-band input (see 5.2.12) ..................................................................... 40

SW3: enable RF-transmit (see 5.2.11) .................................................................................... 40

4.5. Alarm contacts .................................................................................................................. 41

4.6. Serial Monitor and Control via RS485/RS232................................................................... 42

4.7. External 10.0 MHz Input.................................................................................................... 44

4.8. NTC/33xx/xx Interface Module.......................................................................................... 44 4.8.1. Sub-D Interfaces......................................................................................................... 44 4.8.2. Coax Interfaces .......................................................................................................... 47

5. LOCAL MONITOR AND CONTROL.................................................................................... 48

5.1. System Menu .................................................................................................................... 48 5.1.1. Load Configuration ..................................................................................................... 48 5.1.2. Save Configuration ..................................................................................................... 48 5.1.3. Test Functions ............................................................................................................ 49 5.1.4. Alarm Mask................................................................................................................. 50 5.1.5. Serial Interface ........................................................................................................... 51 5.1.6. Device Address for Serial Interface............................................................................ 51 5.1.7. Device Control Mode.................................................................................................. 52 5.1.8. Device Identification ................................................................................................... 52 5.1.9. Device Serial Number................................................................................................. 53 5.1.10. Device Capability...................................................................................................... 53 5.1.11. Hardware Description ............................................................................................... 53 5.1.12. Interface.................................................................................................................... 53 5.1.13. Feedthrough Identification ........................................................................................ 53 5.1.14. Outdoor Unit Power Supply...................................................................................... 54 5.1.15. Outdoor Unit M&C .................................................................................................... 54 5.1.16. Outdoor Unit Identification ........................................................................................ 54 5.1.17. Converter Identification............................................................................................. 55



5.1.18. RF frequency range.................................................................................................. 55 5.1.19. L-band Frequency Range......................................................................................... 55 5.1.20. Frequency Conversion Formula ............................................................................... 55 5.1.17. RF gain ..................................................................................................................... 55

5.2. Control Menu..................................................................................................................... 56 5.2.1. Interface Rate ............................................................................................................. 56 5.2.2. Symbol Rate ............................................................................................................... 56 5.2.3. Modulation and FEC-rate ........................................................................................... 57 5.2.4. L-band Frequency ...................................................................................................... 57 5.2.5. RF Frequency............................................................................................................. 58 5.2.6. Channel Equaliser ...................................................................................................... 58 5.2.7. Modulation .................................................................................................................. 58 5.2.8. Internal L-band transmit.............................................................................................. 59 5.2.9. IF Output Level ........................................................................................................... 59 5.2.10. IF Output Attenuator ................................................................................................. 60 5.2.11. RF Output Transmit .................................................................................................. 60 5.2.12. External L-band Input ............................................................................................... 60 5.2.13. 10.0 MHz Reference Oscillator Source .................................................................... 61 5.2.14. Transmit Data Source............................................................................................... 61 5.2.15. Transmit Clock Source ............................................................................................. 62 5.2.16. Interface.................................................................................................................... 63 5.2.17. Interface Equaliser (only for G703) .......................................................................... 63 5.2.18. Modulation Standard ................................................................................................ 64 5.2.19. MPEG Framing......................................................................................................... 65 5.2.20. Excess Bandwidth .................................................................................................... 65 5.2.21. Spectrum Inversion................................................................................................... 65 5.2.22. Amplitude Slope Equaliser ....................................................................................... 66

5.3. Monitor Menu .................................................................................................................... 67 5.3.1. Internal Temperature .................................................................................................. 67 5.3.2. 10.0 MHz Oscillator Voltage....................................................................................... 67 5.3.3. 10.0 MHz Oscillator Frequency Variation................................................................... 67 5.3.4. Clock Offset ................................................................................................................ 67 5.3.5. Buffer Contents........................................................................................................... 68 5.3.6. Occupied Bandwidth................................................................................................... 68 5.3.7. Rate Adapter Packet Count....................................................................................... 68 5.3.8. Rate Adapter Peak Delay.......................................................................................... 68 5.3.9. Upconverter DRO lock voltage.................................................................................. 69 5.3.10. Outdoor Unit Temperature ...................................................................................... 69

The temperature as measured in the NTC/2505/xL outdoor converter. .................................. 69 5.3.11. Transmit Power Voltage .......................................................................................... 69 5.3.12. SSPA temperature voltage...................................................................................... 70

5.4. Alarm Menu....................................................................................................................... 71 5.4.1. Reset All Memorized Alarms ...................................................................................... 71 5.4.2. Control Setting............................................................................................................ 71 5.4.3. +5.0 Volt Power Supply .............................................................................................. 72 5.4.4. -5.0 Volt Power Supply ............................................................................................... 72 5.4.5. +15.0 Volt Power Supply ............................................................................................ 72 5.4.6. -15.0 Volt Power Supply............................................................................................. 72 5.4.7. Device Temperature ................................................................................................... 72 5.4.8. External Reference for 10.0 MHz Oscillator ............................................................... 73 5.4.9. 10.0 MHz Reference................................................................................................... 73 5.4.10. 70 MHz Local Oscillator PLL .................................................................................... 73 5.4.11. Synthesizer ............................................................................................................... 73 5.4.12. Transmit Level .......................................................................................................... 74 5.4.13. Clock PLL ................................................................................................................. 74



5.4.14. Data Interface ........................................................................................................... 74 5.4.15. Input Framing ........................................................................................................... 75 5.4.16. Buffer Overflow......................................................................................................... 75 5.4.17. Buffer Underflow....................................................................................................... 75 5.4.18. 100 MHz Local Oscillator - PLL................................................................................ 75 5.4.19. RF Phase Lock DRO................................................................................................ 75 5.4.20. Indoor – Outdoor Unit Communication..................................................................... 76 5.4.21. Outdoor Unit Power Supply...................................................................................... 76 5.4.22. Outdoor Unit 100 MHz Reference ............................................................................ 76 5.4.23. Outdoor Unit SSPA................................................................................................... 76

6. REMOTE MONITORING AND CONTROL.......................................................................... 77

6.1. Interface Hardware............................................................................................................ 77 6.1.1. RS485 Hardware ........................................................................................................ 77 6.1.2. RS232 Hardware ........................................................................................................ 78 6.1.3. Serial Interface - Line Settings ................................................................................... 79

6.2. Message Exchange Protocol ............................................................................................ 80

6.3. Message Format ............................................................................................................... 81 6.3.1. Start Byte.................................................................................................................... 81 6.3.2. Address Byte .............................................................................................................. 81 6.3.3. Message Header ........................................................................................................ 82 6.3.4. Message Data ............................................................................................................ 82 6.3.5. End of Text Byte ......................................................................................................... 83 6.3.6. Checksum Byte .......................................................................................................... 83 6.3.7. Examples .................................................................................................................... 84

7. REMOTE MONITORING AND CONTROL COMMANDS ................................................... 85

7.1. System Parameters........................................................................................................... 86 7.1.1. Load Configuration ..................................................................................................... 86 7.1.2. Save Configuration ..................................................................................................... 86 7.1.3. Test Functions ............................................................................................................ 86 7.1.4. Alarm Mask................................................................................................................. 86 7.1.5. Device Address for Serial Interface............................................................................ 86 7.1.6. Device Control Mode.................................................................................................. 87 7.1.7. Device Identification ................................................................................................... 87 7.1.8. Device Serial Number................................................................................................. 87 7.1.9. Device Capability........................................................................................................ 87 7.1.10. Hardware Description ............................................................................................... 87 7.1.11. Interface Identification .............................................................................................. 87 7.1.12. ST Frequency Mode................................................................................................. 88 7.1.13. Feedthrough Identification ........................................................................................ 88 7.1.14. Outdoor Unit Monitor and Control ............................................................................ 88 7.1.15. Outdoor Unit Identification ........................................................................................ 88 7.1.16. Converter Identification............................................................................................. 89 7.1.17. RF Frequency Range ............................................................................................... 89 7.1.18. L-band Frequency Range......................................................................................... 89 7.1.19. Frequency Conversion ............................................................................................. 89 7.1.20. RF converter gain ..................................................................................................... 89 7.1.21. Self Test ................................................................................................................... 90 7.1.19. Device Reset ............................................................................................................ 90 7.1.20. Device Reset Flag .................................................................................................... 90



7.2. Control Parameters ........................................................................................................... 91 7.2.1. Interface Rate ............................................................................................................. 91 7.2.2. Symbol Rate ............................................................................................................... 91 7.2.3. FEC-rate and Modulation ........................................................................................... 91 7.2.4. IF L-Band Frequency.................................................................................................. 91 7.2.5. RF Frequency............................................................................................................. 92 7.2.6. Channel Equaliser ...................................................................................................... 92 7.2.7. Modulation .................................................................................................................. 92 7.2.8. Internal L-Band Transmit (Modulator output) ............................................................. 92 7.2.9. IF Output Level ........................................................................................................... 93 7.2.10. IF Output Attenuator ................................................................................................. 93 7.2.11. RF Output Transmit .................................................................................................. 93 7.2.12. External L-Band Input............................................................................................... 93 7.2.13. Transmit Data ........................................................................................................... 94 7.2.14. Transmit Clock.......................................................................................................... 94 7.2.15. 10.0 MHz Oscillator .................................................................................................. 94 7.2.16. Interface.................................................................................................................... 95 7.2.17. Interface Equaliser.................................................................................................... 95 7.2.18. Modulation Standard ................................................................................................ 95 7.2.19. MPEG Framing......................................................................................................... 95 7.2.20. Excess Bandwidth .................................................................................................... 96 7.2.21. Spectrum Inversion................................................................................................... 96 7.2.22. Amplitude Slope Equaliser ....................................................................................... 96 7.2.23. ST Frequency ........................................................................................................... 96

7.3. Alarm Menu....................................................................................................................... 97 7.3.1.-7.3.4. +5.0 Volt, -5.0 Volt, +15.0 Volt and -15.0 Volt Power Supply .......................... 97 7.3.5. Device Temperature ................................................................................................... 97 7.3.6. External 10.0 MHz Reference .................................................................................... 98 7.3.7. 10.0 MHz Reference................................................................................................... 98 7.3.8. 70 MHz Local Oscillator PLL ...................................................................................... 98 7.3.9. 100 MHz Local Oscillator PLL .................................................................................... 98 7.3.10. RF Phase Lock DRO................................................................................................ 98 7.3.11. Synthesizer ............................................................................................................... 99 7.3.12. Transmit Level .......................................................................................................... 99 7.3.13. Clock PLL ................................................................................................................. 99 7.3.14. Data Interface ........................................................................................................... 99 7.3.15. Input Framing ........................................................................................................... 99 7.3.16.-17. Buffer Overflow and Underflow ........................................................................ 100 7.3.18. Reset All Memorized Alarms .................................................................................. 100 7.3.19. Control Setting........................................................................................................ 100 7.3.20. All Alarms ............................................................................................................... 100 7.3.21. General Device Alarm ............................................................................................ 101 7.3.22. Indoor Unit - Outdoor Unit Communication ............................................................ 101 7.3.23. Outdoor Unit - Power Supply.................................................................................. 101 7.3.24. Outdoor Unit - 100 MHz Reference Level .............................................................. 101 7.3.25. Outdoor Unit - SSPA .............................................................................................. 102 7.4.1. Internal Temperature ................................................................................................ 103 7.4.2. 10.0 MHz Oscillator Voltage..................................................................................... 103 7.4.3. Transmit Clock Offset ............................................................................................... 103 7.4.4. Buffer Contents......................................................................................................... 103 7.4.6. Upconverter DRO Lock Voltage ............................................................................... 104 7.4.7. Rate Adaptor Packet Count...................................................................................... 104 7.4.8. Rate Adaptor Peak Delay......................................................................................... 104 7.4.9. Internal L-Band Transmit Status (Modulator output) ................................................ 104 7.4.10. RF Transmit Status................................................................................................. 104 7.4.11. Applied IFL Output Level ........................................................................................ 105 7.4.12. Outdoor Unit Temperature ..................................................................................... 105 7.4.13. Transmit Power Voltage ......................................................................................... 105 7.4.14. SSPA Temperature Voltage ................................................................................... 105



7.5. Test Menu ....................................................................................................................... 106

7.6. Error Messages............................................................................................................... 106

8. SERVICE............................................................................................................................ 107

8.1. Maintenance.................................................................................................................... 107

8.2. Fan Replacement............................................................................................................ 108

8.3. Line Fuse Repair ............................................................................................................. 108

8.4. Installation Interface Module NTC/3xxx/xx...................................................................... 108

8.5. Installation Converter Module NTC/3631/xx ................................................................... 108

8.6. Strap Positions ................................................................................................................ 109

8.7. System Test Failure ........................................................................................................ 110

8.8. Troubleshooting Report................................................................................................... 111

APPENDIX A : APPLICATION NOTE NTC/2080/APN07 : CHANNEL EQUALISATION FOR HIGH BAUD RATE MODULATORS ...................................................................................... 115

APPENDIX B : APPLICATION NOTE NTC/2080/APN08 : CONFIGURING THE NTC/2061/ZX+SK FOR SKYPLEX OPERATION.................................................................. 117

APPENDIX C : USER MANUAL CONVERTER MODULE NTC/3631/XZ/UMN................... 119



0. ABBREVIATIONS 16QAM 16 Quadrature Amplitude Modulation 8PSK Octagonal Phase Shift Keying ASCII American national Standard Code for Information Interchange ASI Asynchronous Serial Interface CE Communauté Européenne (European quality certification label) dc direct current DRO Dielectric Resonance Oscillator DTE Data Terminal Equipment DVB Digital Video Broadcast EEPROM Electrical Erasable Programmable Read-Only Memory EIRP Effective Isotropic Radiated Power ETSI European Telecommunications Standards Institute FEC Forward Error Correction FIFO First In - First Out HPA High Power Amplifier HSSI High Speed Serial Interface IF Intermediate Frequency IFL Intermediate Frequency at L-band I/O Input - Output INC INCompatibility (display indication) LCD Liquid Crystal Display LED Light-Emitting Diode LO Local Oscillator LRC Longitudinal Redundancy Check LSB Least Significant Byte M&C Monitoring and Control MCPC Multi Channel Per Carrier MPEG Motion Picture Experts Group MSB Most Significant Byte MUX MUltipleXer N.A. Not Applicable N.C. Not Connected NTC Newtec Cy PC Personal Computer PCR Program Clock Reference PID Packet IDentifier PLL Phase-Locked Loop PLO Phase Locked Oscillator ppm parts per million PRBS Pseudo Random Bit Sequence QPSK Quadrature Phase Shift Keying RCRO Root Cosine Roll Off RF Radio Frequency RMCP Remote Monitor and Control Protocol RS Reed Solomon RSU Redundancy Switching Unit SED Short Energy Dispersal scrambler SPI Serial Parallel Interface SCPC Single Channel Per Carrier SSPA Solid State Power Amplifier ST Send Timing TDMA Time Division Multiple Access TWTA Traveling Wave Tube Amplifier



1. TECHNICAL DESCRIPTION

1.1. Functional Diagram (*) Block Schema interface functions : see hereafter (+ reference to the related functions)





1.2. Software History NTC/6145/AA Main Controller Software version date remarks v1.02 07-04-1999 first release for production, SKYPLEX TDMA

included v1.10 21-06-1999 - adapted for NTC/3325/SG interface module

- adapted for low rate (> 60 kBaud) - adapted for SKYPLEX (SCPC and TDMA) - adapted for extended numbering (OEM and modification) - adapted for NTC/2505/xx identification (serial number) - bug-fix : L-band frequency monitoring - bug-fix : RF control possible without ODU

v1.20 30-03-2000 Adapted for strip NTC/3312/AE (changed tunable filter). Bug-fix : memorised alarms in ODU all alarm string

v1.30 26-01-2001 Internal 10 MHz is bypassed when using external 10 MHz (No Locking)

v1.33 20-04-2001 Bug-fix : DVB 16QAM - FEC 7/8 FINAL v1.34 07-05-2001 - Bug-fix : NTC/DVB 8PSK/16QAM with new

BG/BH files - Bug-fix : RMCP Command "CSi" does not change Input of Transmit clock

v1.35 13-06-2001 Implementation of Startup Delay 20sec. When uploading new lca-conf, display is now empty, no Random Chars

v1.39 27-08-2002 Split of the Skyplex-TDMA modulation standard into 2 for Hotbird5 or Hotbird 6

1.3. Product Specification (Data Sheets) NTC/2080/Ax, NTC/3631/Az and NTC/33xx/xx : see following pages. Remark : for the latest editions of the data sheets and the application notes, please visit our

web-sit at address www.newtec.be

1.4. Output Level The nominal guaranteed IFL output level range is -30.0 up to -10.0 dBm. There is a full frequency band accuracy of about ± 5 dB. To obtain the required level, a range of -35.0 up to -5.0 dBm is foreseen. To obtain the range -35.0 up to -20.0 dBm a fixed 15.0 dB attenuator is used. Due to the inaccuracy of this attenuator, a discontinuity at -20.0 dBm occurs.































1.5. Spurious Performance for modulated carriers in 4 kHz

version freq. band output level specification NTC/2080/zL NTC/3631/Bz

30 - 110 MHz -10 dBm

-20 dBm

< -65 dBc

< -60 dBc NTC/2080/zL NTC/3631/Gz

13.8 - 14.7 GHz -10 dBm

-20 dBm

< -60 dBc

< -55 dBc

1.6. Satellite Operation Specifications INTELSAT - IESS: < -40 dBc/4 kHz (rates < 2.048 Mbit/s) < -50 dBc/4 kHz (rates > 2.048 Mbit/s) EUTELSAT - EESS-502 : < -55 dBc/4 kHz ASIASAT - SCPC: < -51.8 dBc (rates < 20.0 Mbaud)



1.7 Optimal Operation for Minimum Spurious (*) As indicated in Chapter 1, the modulator is compliant with the INTELSAT IESS-308

requirement for spurious (< -50 dBc/4 kHz) over the nominal output level range of -10 to -30 dBm. The front panel indication has a margin of ± 5 dB extra, to compensate for level variations mainly over the total frequency band.

(*) When the modulator is used in a small dish DSNG uplink station, there is a special ETSI

requirement for off-axis EIRP spurious at angular offsets greater than 7° from the satellite direction. The specified value is 78 dBpW/100 kHz or -42 dBW/100 kHz. When an antenna rejection between main lobe and at 7° offset of e.g. 45 dB is assumed, this would mean that the maximum spurious on the main beam should be -42 + 45 or +3 dBW/4 kHz.

For a maximum EIRP of 63 dBW per modulated carrier, this would mean that the spurious should be below +3 - 63 or < -60 dBc/100 kHz @ MAXIMUM OUTPUT LEVEL.

(*) The above-indicated ETSI requirement is significantly more stringent than the INTELSAT

requirement. In that case, it is interesting to operate the modulator in the level region where spurious are minimal, which is around -10 dBm output level.

(*) Typical examples of optimum level diagram for earth stations are shown hereafter.

1) One carrier per HPA operation:

EIRP HPA output power modulation output power for TWTA for SSPA at IFL at RF maximum operation over satellite

saturation -3 dB

1 dB compression

-0.5 dB

-10 dBm

-10 dBm

To reduce EIRP below maximum, the modulator output level may be reduced. 2) Multi-carrier (N carriers) per HPA operation :

EIRP HPA output power per carrier modulation output power at IFL at RF maximum operation over satellite

saturation -5 dB

-10 log N

1 dB compression

-2 dB -10 log N

-10 dBm

per carrier

-10 dBm

per carrier



2. INSTALLATION Warning : This equipment is provided with a protective earthing ground incorporated in the

power cord. The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. Any interruption of the protective conductor, inside or outside the instrument, is likely to make the instrument dangerous. Intentional interruption is prohibited. The type of mains plugged shipped with each instrument depends on the country of origin.

Caution : Do not connect AC power until you have verified that the line voltage is correct

and the proper fuses are installed. Damage to the equipment could result. The equipment requires a power source of either 50/60 Hz at 100 V or 50/60 Hz at 240 V. The voltage ranges for these nominal voltage values are shown in the table:

POWER REQUIREMENT

Input voltage

90 - 130 Vrms or 180 - 260 Vrms auto select

Frequency 47 to 63 Hz Power 150 VA max. / 105 VA nom. Current 100 V/1.05 A or 240 V/0.45 A nominal

Caution : This instrument has auto ranging line voltage input ; be sure the supply voltage is within the specified range. Checking the fuses : The recommended fuses are size 5 by 20 mm, rate T 3.15 A, 250 V (UL and IEC approved).

The line fuses are housed in a small container above the rear-panel power connector. To check the fuses, insert the tip of a screwdriver into the middle of the container and pry gently to extend the container. The fuse container is attached to the line module; it cannot be removed.

Remark : The power entry module has a marking of 6.3 A max. for the fuse on the fuse body. This value is applicable to the power entry module only, not to the instrument. The recommended fuse ratings are printed on the rear panel nearby the fuse holder.

2.1. Inspection and Test Remove the unit from the box in which it is shipped. Keep the box for later transport of the unit. Verify the unit for damage. If everything seems all right, power can be applied to the unit. Mains socket and fuses are located at the rear panel of the unit. After system boot, verify that the display gives following message: DBV+8+16 Modulator (version - date) system test passed display : ↑↓←→ If there is no message at all (display not lighted) or if SYSTEM TEST FAILED is displayed, the unit is defective and has to be returned for servicing (see also 7. Service).



2.2. Functional Self-Test No specific functional self-test is needed. The unit has been factory tested according to acceptance test procedures and is ready for operation. When also a demodulator, example NTC/2063/xx, is available, the next test can be performed. Take care to disable the DC at the modulator output and/or the demodulator input or place a DC-block in the connection between them. If one of the devices has DC on its I/O, then both devices can be damaged - connect the L-band output of the modulator to the L-band input of the demodulator - connect the data output of the demodulator to the data input of the modulator, - set the output level of the modulator to -35.0 dBm, and use additional attenuators if the receive level is still too high (level saturation alarm on demodulator) - set the deframer buffer output clock (or the interface clock source) of the demodulator to

fallback or internal clock - set the transmit data to internal PRBS, the transmit clock to internal and the interface MPEG

framing to internal for the modulator, - take care that carrier frequency, symbol rate, modulation, FEC and RS coding, framing and

interface match for modulator and demodulator. Verify that there are no active alarms at the modulator and that the demodulator correctly receives the PRBS pattern.

2.3. Mounting If the functional self-test is OK, then the unit can be installed at the required location. The environment should be relatively dust free, free of excessive vibration and the ambient temperature below 40°C. Air intake for cooling is via holes at the side of the unit and the fans at the back panel. Airflow should not be obstructed. Therefore, the unit has to be placed on a flat surface, leaving some space at the sides of the unit. Warning : When mounted in a standard 19 inch equipment rack, the modulator must be sustained by L-profiles. Fixing the modulator with 4 front panel screws only will damage it and could result in inquiry. When in operation, the internal temperature should not exceed the limit of 70°C.



2.4. Recommended Default Setting The indicated values for the system and control parameters allow normal operation of the modulator. The parameters marked with TBD depend on the target link or the preference of the user. The indicated default values are the values saved in permanent memory for new modulators. 2.4.1. System Parameters The system parameters are to be adapted at installation. These parameters inform the modulator about the surrounding hardware and how to use it. All these settings are maintained in permanent memory and saved when changed. After power-on the modulator uses the settings as were before power-down. test functions : disabled alarm mask : 000000 hex serial interface : RS485 device address : TBD default 51 device control : local ST frequency mode : auto The modulator always starts with the test functions disabled and local device control. The device address for remote M&C must be changed so that it is unique in the target group for the remote control unit.



2.4.2. Control Parameters The control parameters define the actual operation status of the modulator. The operator can change them at any time. All these settings are saved in permanent memory as a configuration. They are saved and read under operator control via dedicated system functions. After power-on or reset, the modulator uses the settings from configuration 0. At installation the default control settings in configuration 0 must be adapted in function of the target link. When needed, more target links can be defined and saved as configurations 1 to 4. interface rate : TBD default : 8.294118 MHz symbol rate : TBD default : 6.000000 Mbaud FEC-rate and modulation : TBD default : QPSK, FEC 3/4 L-band IF frequency (IFL) : TBD default : 1.45 GHz RF frequency : TBD depend on converter channel equalizer : 0% modulation : on default : QPSK internal L-band transmit : enabled IF output level : TBD default : -15.0 dBm IF output attenuator : TBD default : off RF output transmit : enabled external L-band input : disabled internal 10.0 MHz oscillator : internal offset +0.000 ppm transmit data : external transmit clock : external interface selection : RS422 interface equalizer : 0 modulation standard : DVB MPEG framing : external, 188 byte frames TX excess bandwidth : auto spectrum inversion : off amplitude slope equalizer : 0 ST frequency : TBD default : 8.294118 MHz 2.4.3. Operational Configuration : DVB Standard The DVB standard specifies MPEG sources, with co-directional clock, thus from encoder to modulator. This means that for operational used : - MPEG framing : external - transmit data : external - transmit clock : external, thus slaved to interface clock



2.4.4. Operational Configuration : DVB Standard with Unstable Clock Some encoders have an unstable or inaccurate clock or operate with a bursty clock. For other encoders, the clock can only be programmed is large steps. It is advisable to use the internal transmit clock for these encoders. Then the interface rate should be programmed about 5% higher than the average received clock. The additional needed data is filled by the modulator with stuffing MPEG packets (null packets). These are removed by the decoder on reception. Thus : - MPEG framing : external - transmit data : external - transmit clock : internal, thus free running Example : Tiernan TE3 encoder : - video rate : 7.0 Mbit/s - MUX rate : 7.9 Mbit/s - clock : internal NTC/2080/xx modulator : - MPEG framing : external - transmit data : external - transmit clock : internal, thus free running - interface rate : 8.294118 Mbit/s 2.4.5. Operational Configuration : Non-MPEG Source In the case that a non-MPEG source is used, then the modulator can insert MPEG sync words to the data. This allows coding synchronization in the demodulator. The demodulator can then strip off this MPEG sync words, so that input data only remains. The external transmit clock is required, to prevent data stuffing. So : - MPEG framing : internal - transmit data : external - transmit clock : external, thus slaved to interface clock



3. FRONTPANEL DESCRIPTION

3.1. Liquid Crystal Display

The 2x40 characters Liquid Crystal Display (LCD) provides the operator with all the required information about the selected parameter. The top line of the LCD display the selected parameter and its present value. The bottom line indicates the selected menu to which the parameter belongs and how it can be manipulated. The parameters are grouped in four menus : - The system menu, which gives the general device management

parameters and the hardware related parameters - The control menu, with the main operation control functions - The alarm menu, which informs about device critical functions - The monitor menu, with operation related variables measured by

the device. When the test functions are enabled, then a fifth menu becomes available to the operator. This test menu contains functions that are beyond the normal operation of the device.



3.2. Keypad

The 16-frontpanel keys allow the operator to navigate in the menus and change parameters, if the modulator operates under local control. The ↑ and ↓ keys are used to scroll between the main menus of the modulator. Once in the desired menu the needed sub-menu can be found with the ← and → keys. The bottom line of each submenu, it is indicated if and how the operator can manipulate the parameter. In general, the E-key, (enter) is used to

♦ toggle between the possible selections ♦ load numerical values entered via the keyboard ♦ confirm critical changes

The C-key, (clear), empties the numerical input fields, and resets the memorized alarms and their event counter. The digit keys 0 up to 9 are used for the input of numerical values and the selections of multiple options. When the input of floating point numbers is needed, then the decimal dot is indicated on the LCD. The meaning of an entered digit is indicated by its location relative to the decimal dot. This includes that leading “0”-s must be entered. The + and - key are used to enter signed numbers and tuning of some parameters. For the input of signed numbers, the meaning of the C or + -key and the 0 or - key depends on when that key is pressed. If they are the first input of a number, then these keys are interpreted as sign. For the next inputs, they are treated as C or 0. To enter Hexadecimal characters press 0 ↑ for A, 1 ↑ for B, 2 ↑ for C and so on.



3.3. Indicator LEDs There are six LED-indicators : - external L-band input : status of the external L-band input green : external L-band input enabled off : external L-band input disabled - internal L-band : status of the modulator output (internal L-band)

green : the modulator is transmitting off : the modulator transmit is disabled by the operator or suppressed by an alarm

Modulator transmit suppressing alarms: - external reference for 10.0 MHz oscillator - 10.0 MHz oscillator - 70 MHz local oscillator PLL - synthesizer - incompatibility indication - RF output : status of the converter output (RF or IF output)

green : the converter is transmitting. off : the RF transmit is disabled by the operator or suppressed by an alarm

RF transmit suppressing alarm: - external reference for 10.0 MHz oscillator - 10.0 MHz oscillator - 100 MHz local oscillator PLL - RF phase lock DRO

The RF output active does not mean that the modulator is transmitting, this is only possible if also the modulator (internal L-band) is enabled and/or the external L-band is enabled and signal is received via this input.

- active alarm : the combination of all the active modulator alarms (see 5.3.) red : the modulator has an active alarm off : no actual alarm - memorized alarm : the combination of all the memorized modulator alarms (see 5.3.)

red : an alarm has been detected and is no longer active (active alarm LED off) or is still active (active alarm LED on)

off : there has been no alarm since power-on or the last memorized alarm reset - test : the modulator operates in a non-standard mode

yellow : the test functions are enabled or the modulation is disabled (pure-carrier transmit) or the PRBS-signal is send

off : the modulator operates in the standard mode



4. BACKPANEL

4.1. Power Supply The power supply cable needs an IEC main socket at the side of the modulator. The type of plug at the other side of the mains cable depends on the country of destination and has to be adapted at installation. Standard a cable with a European DIN 49441 two-pin mains plug (Schuko) is delivered. The line fuses are housed in a small container at the top of the power supply connector.

4.2. Main On/Off Switch The main on/off switch interrupts the power supply towards the modulator if OFF.

4.3. Fans The fans provide the cooling airflow for the modulator. Take care not to obstruct these fans.



4.4. NTC/3631/Az Converter Module For the NTC/3631/Az converter modules, the three F SMA connectors are used for the external L-band input, internal L-band output (modulator output) and the IFL feedthrough (RF output) from left to right as seen at the back of the modulator.

SW1: enable internal L-band transmit (see 5.2.8.)

SW2: enable external L-band input (see 5.2.12)

SW3: enable RF-transmit (see 5.2.11)

Internal L-band from modulator

External L-band input

L-band output (RF output)

L-band Combiner

Internal L-band (modulator output)

SW1

SW2

SW3 24 V 100 MHz ref M&C



4.5. Alarm contacts

9-pin female sub-D connector as seen on modulator

Contact closures

1 - 2 - 3 modulator internal status, this is the summary (logical-OR) of the following alarms: (see 5.3.)

q Incompatibility indication q + 5, -5, + 15, -15 volt power supply q Device temperature q External 10.0 MHz oscil. reference q 10.0 MHz oscillator reference q 70 MHz local oscillator PLL q 100 MHz local oscillator PLL q RF phase lock DRO q ODU communication, powers supply, 100 MHz level q Transmit SSPA q Synthesizer q Transmit level

6 - 4 - 5 modulator input status this is the summary (logical-OR) of the following alarms (see 5.3.)

q Clock PLL q Data interface q Input framing q Buffer under/overflow

During initialization or when the modulator is powered down, the alarm contacts indicate alarm.

ALARM1 5

9 6

2 Common internal 3 internal alarm

1 internal ok

5 input alarm 4 Common input

6 input ok



4.6. Serial Monitor and Control via RS485/RS232

The modulator contains the hardware for the RS485 and RS232 interface. The operator must indicate which hardware to use via the straps near the serial M&C connector on the main board (see 8.5.). 9-pins female sub-D connector (inputs and outputs are related to this modulator).

RS485 serial interface: shield (ground) 1 6 output : receive data B N.C. 2 7 N.C. input : send data A 3 8 N.C. output : receive data A 4 9 input : send data B signal ground 5 RS232 serial interface: shield (ground) 1 6 N.C. input : receive data (RD) 2 7 output : request to send (RTS) output : transmit data (TD) 3 8 input : clear to send (CTS) output : data terminal ready (DTR) 4 9 N.C. signal ground 5

MON & CTRL5

9

1

6



If the RS232 serial interface is used, the modulator behaves as a DTE, so the needed cable is a “null”-modem cable. Thus with the connections between “receive data” and “transmit data” crossed. The handshaking signals DTR and RTS are always on at the NTC/2###/xx device. Remote devices that need these signals can use them for serial communication. The device does not need CTS.

In most cases, the remote control device is a PC, where the serial COM1 port could be used. This port has a 9-pin or 25-pin male sub-D connector. For the typical layout of this connector (to be verified in the PC documentation), the following “null”-modem cable (option NTC/3267/AC) can be used:

NTC/2###/xx device remote control PC COM1 port serial M&C port serial COM1 port

9 pin F sub-D connector 9 pin (25 pin) M sub-D connector GND 5 5 (7) GND RD 2 2 (3) RD TD 3 3 (2) TD RTS 7 7 (4) RTS CTS 8 8 (5) CTS DTR 4 4 (20) DTR Shield 1 6 (6) DSR 1 (8) DCD 9 pin male sub-D 9 (or 25) pin female sub-D on cable on cable

WARNING! The use of the wrong hardware can damage this device, the remote control unit and possibly other devices on the bus.



4.7. External 10.0 MHz Input BNC connector (50 ohm) for the input of an external 10.0 MHz signal. Take care that this input is left unconnected, when the modulator operates with internal 10.0 MHz reference.

4.8. NTC/33xx/xx Interface Module The type of cables and the connectors depend on the used interface module NTC/33xx/xx and are described in the data sheet of this module. 4.8.1. Sub-D Interfaces 25-pins female sub-D connector : pin-out depends on the selected interface - for the DVB-SPI interface :

The DVB-SPI interface is conform to [R1] DVB-PI-154 “Interfaces for CATV/SMATV Headends and Similar Professional Equipment”.

(*) signals and pinout :

SOURCE MODULATOR

CLOCK 1DATA 0/7 8DVALID 1PSYNC 1

PIN SIGNAL LINE PIN SIGNAL LINE 1 2 3 4 5 6 7 8 9 10 11 12 13

Clock A System GND Data 7 A (MSB) Data 6 A Data 5 A Data 4 A Data 3 A Data 2 A Data 1 A Data 0 A DVALID A PSYNC A Cable Shield

14 15 16 17 18 19 20 21 22 23 24 25

Clock B System GND Data 7 B Data 6 B Data 5 B Data 4 B Data 3 B Data 2 B Data 1 B Data 0 B DVALID B PSYNC B

The PSYNC signal is not required.

(*) Electrical : V11 differential receiver 100 Ω termination Accepts also balanced negative ECL levels as supplied by Philips

equipment. (*) Timing : normal (as shown below) or inverted programmable via keyboard or remote M&C I/F



TRUE DATA DATA APIN 3/10

CLOCK APIN 1

Normal Clock-Data relationship for SPI interface

(*) Packet timing : two transmission formats are supported, 188-byte packets & 204-byte packets (see 5.2.19.).

SYNC 1 2 3 1187 SYNC187186

CLK

DATA0/7

DVALID

PSYNC Transmission format with 188-byte packets

SYNC 1 2 3 116 SYNC187186

CLK

DATA0/7

DVALID

PSYNC

1 2 16

Transmission format with 204-byte packets

For the 204-byte packet mode, two formats are possible: 188 data bytes and 16 dummy bytes, or 188 bytes and 16 RS parity bytes. Before transmission, the dummy bytes or RS parity bytes from the input are ignored and replaced by fresh RS parity bytes. This means that the RS coding provides full protection on the satellite segment, and none on the base band interface.



- for the RS422 interface :

(*) signals and pin-out as used for interfacing with a Tiernan TE3 encoder :

TIERNAN HD-15 pin

RS422 cable NTC 25 pin

11 TTA 1 12 TTB 14 6 SDA 10 1 SDB 23

9, 15 GND 2, 15

The use of a cable with individually shielded pairs is recommended. For operation up to 15 Mbit/s, the cable length should be limited to 2 m. The cable can be ordered at NEWTEC, order code NTC/4147/AA.

(*) Timing : normal (as shown below) inversion is programmable in test mode.

TRUE DATA SDAPIN 10

TTAPIN 1

Normal Clock-Data relationship - for the HSSI interface : see datasheets of the corresponding module



4.8.2. Coax Interfaces - for the DVB- ASI electrical interface :

The DVB-ASI electrical interface is conform to [R1] DVB-PI-154 “Interfaces for CATV/SMATV Headends and Similar Professional Equipment”.

This interface requires the interface module NTC/3359/AE or NTC/3359/OE.

Input connector: ASI IN A Output connectors: ASI OUT BNC-female BNC-female

ASI SOURCEA

ASI SOURCEB

ASI MONITOR

SELECTOR ASI RX

ASI TX

MODULATOR WITH ASI OPTION

TO MODUL

INP ASI-A

INP ASI-B

OUTP ASI

ASI OUT is a regenerated copy of ASI IN A.

ASI Electrical : 270 Mbaud NRZ transformer coupled 75 Ω

Line code and synchronization: As per [R1] DVB-P1-154 - for the DVB- ASI optical interface :

The DVB-ASI optical interface is conform to [R1] DVB-PI-154 “Interfaces for CATV/SMATV Headends and Similar Professional Equipment”. This interface requires the interface module NTC/3359/OE. In addition to features of the Electrical ASI interface, an optical ASI input is provided on the ST connector as per [R1] DVB-P1-154. A regenerated optical output is available for monitoring purposes.

- for the G.703 interface : see datasheets of the corresponding module



5. LOCAL MONITOR AND CONTROL

5.1. System Menu The system menu provides information about the general device functions, the surrounding equipment and the used hardware. These parameters have to be set during installation of the modulator and saved in permanent memory. Hardware related parameters can only be changed in test mode. When the modulator operates with a down-converter module (NTC/3631/LZ) all references to RF must be read as IF. This applies for this manual, the display indications and the remote messages. 5.1.1. Load Configuration

Load one of the previously stored configurations from permanent memory. A configuration is formed by the control parameters as described in section 5.2. Up to five configurations (0 to 4) are available. After power-on or reset, the modulator automatically loads configuration 0. Loading a configuration will disable the internal L-band transmit. An exception is made for load configuration 0 (default), then the saved status of the internal L-band transmit is used.

5.1.2. Save Configuration

Allows the operator to save the present control parameters (see 5.2.) as a configuration in permanent memory. Up to five configurations (0 to 4) are available. Save the default configuration in memory slot 0. It is not possible to save configurations that contain an incompatibility.

load configuration : system menu select 0 - 4

save present config. as : system menu select 0 - 4



5.1.3. Test Functions

These are a number of additional functions, which are used for installation, test and problem solving. Some control parameters can be changed to a value not specified for normal operation.

WARNING : If test functions are enabled, transmit suppression due to an active alarm is disabled. Normal operation is not guaranteed when test functions are enabled. Damage can be done to this modulator and other equipment when the test functions are used by unqualified personnel or in an operational environment. A password is required to enable test functions. This password is the NTC-number of the modulator (see 5.1.8.).

Procedure : When this screen is displayed, type in the password “2080”, the display will now show: To enable press E To disable press E again

test functions : disabled system menu

test functions : disabled system menu toggle with <enter>

test functions : enabled system menu toggle with <enter>



5.1.4. Alarm Mask

The alarm mask allows the operator to suppress the guarding of a dedicated alarm by setting the corresponding bit. A masked alarm is not monitored and the action to be taken when the alarm occurs is not done. This includes that transmit is not switched off on the occurrence of a masked transmit suppressing alarm (see 3.3. for a list of transmit suppressing alarms). The alarm mask byte can only be changed in test-mode (see 5.1.3.)

-WARNING: the suppression of an alarm may prevent normal operation of the

modulator when the considered alarm occurs. Damage can be done to this modulator and other equipment when the alarms are suppressed by unqualified personnel or in an operational environment.

Mask definition (bit 23 = MSB): bit 23 : not used bit 22 : not used bit 21 : ODU 100 MHz reference level bit 20 : ODU power supply bit 19 : IDO - ODU communication bit 18 : Transmit SSPA bit 17 : not used bit 16 : Transmit level bit 15 : Device temperature bit 14 : Phase Locked DRO bit 13 : Buffer underflow bit 12 : Buffer overflow bit 11 : Input framing bit 10 : Data interface bit 9 : Clock PLL bit 8 : Synthesizer bit 7 : 70 MHz Local Oscillator PLL bit 6 : 100 MHz Local Oscillator PLL bit 5 : 10.0 MHz oscillator reference bit 4 : external 10.0 MHz oscillator reference bit 3 : -15.0 Volt Power Supply bit 2 : +15.0 Volt Power Supply bit 1 : -5.0 Volt Power Supply bit 0 : +5.0 Volt Power Supply

alarm mask : 000000 hex system menu



It is strongly recommended to use 200000 HEX as alarm mask, all alarms monitored except for the “ODU 100 MHz reference level” alarm, which is for troubleshooting purposes only. Example : Suppose you want to mask the input framing alarm. Alarm mask = (0000 0000 0000 1000 0000 0000) BIN

= (000800) HEX See section 3.2 on how to enter Hexadecimal characters.

5.1.5. Serial Interface

Select between RS485 and RS232 as protocol for the serial interface. To be changed in test mode (5.1.3.).

5.1.6. Device Address for Serial Interface

The device address for the NTC/2080/Zx, used in the messages for remote serial M&C (see 6.), is a single byte with a value in the range 49 - 109. It identifies the device that has to handle the message from the remote control unit.

When the multi-user RS485 bus is used, each device on the bus must have a different address, unique in the system. Example: When using the NTC/2073/xx combiner converter at address 60 together with the NTC/2080/xx modulator, at address 62, the addresses 61 and 63 cannot be used for other devices since they are reserved for the converters. If there are duplicate addresses on the same bus, one of the devices might block and a reboot would be necessary.

device address for RMCP : 51 system menu new :

serial interface : RS485 system menu



When using the Newtec NTC/2505/xL ODU The NTC/2505/xL outdoor converter has the device address of the indoor unit raised by one. Thus the NTC/2080/Ax indoor unit and the NTC/2505/xL outdoor unit are to be handled by a remote control unit as different devices with successive addresses. The messages for the NTC/2505/xL outdoor converter are passed through the NTC/2080/Ax indoor unit.

5.1.7. Device Control Mode

The device control mode indicates via which interface the control parameters of the device may be changed. All status and monitoring information is always available at both interfaces. In local control mode, all parameters can be changed via the front panel keypad and via RMCP (IEEE 488.1 style). When the device operates in remote control mode, then all parameters may be changed via the remote interface (see 6.). But inputs from the front panel keypad are refused. If the local lock-out state is selected, then the change of the device control mode is only allowed via RMCP. If the device does not receive a request via RMCP within one minute, it changes its control state to local control, no lock-out.

5.1.8. Device Identification

This is the device type (NTC-number) and sub-type (alphanumeric suffix) and identifies the hardware and firmware. The version number and the release date of the used firmware is displayed on the bottom line.

device control : local system menu

Device : NTC/2080/APDN DVB mod. Firmware : NTC/6145/AA v1.35 13 jun 2001



5.1.9. Device Serial Number

The serial number of the device as known by the firmware. This number should be the same as the serial number on the back panel label.

5.1.10. Device Capability

The device capability indicates the supported functionality and is needed for test and factory support.

5.1.11. Hardware Description

The hardware description gives information about the hardware items present in the modulator and is needed for test and factory support.

5.1.12. Interface

This is the type (NTC-number) and sub-type (alphanumeric suffix) of the installed interface.

5.1.13. Feedthrough Identification

This is the type (NTC-number) and sub-type (alphanumeric suffix) of the installed feedthrough module.

feedthrough : NTC/3631/AZ v1.0 SN01022700 system menu

interface : NTC/3359/AE rate adapter system menu

serial number : 01090540 system menu

device capability : 130F3C system menu

hardware description : FF000C system menu



5.1.14. Outdoor Unit Power Supply

The NTC/2505/xL outdoor converter uses a +23 volt power supply, which is delivered by the indoor unit via the RF transmit cable. This power supply is only available when enabled. When non-NTC-outdoor units are used, which are powered otherwise, then the +23 volt power supply must be disabled. Take care : non-NTC-outdoor units or other equipment can be damaged when the +23 volt power supply is present at the RF transmit cable. Disable the outdoor unit power supply (non-NTC-outdoor equipment) or use a blocking capacitor (measurement equipment). This parameter can only be changed in test mode.

5.1.15. Outdoor Unit M&C

The NTC/2505/xL outdoor unit is controlled and monitored via the indoor unit. This is done via an RMCP interface between the indoor unit controller and the outdoor unit controller. This M&C option is only available when enabled. When non-NTC-outdoor units, which does not support this protocol, are used, then the outdoor unit M&C must be disabled. This parameter can only be changed in test mode..

5.1.16. Outdoor Unit Identification

This is the type (NTC-number) and sub-type (alphanumeric suffix) of the outdoor unit. Also the serial number and the firmware version is indicated.

ODU power supply : enabled system menu

outdoor unit M&C : enabled system menu

outdoor unit : NTC/2505/DL ser.numb.:01120523 NTC/6680/AA V1.01



5.1.17. Converter Identification

This is the type (NTC-number) and sub-type (alphanumeric suffix) of the converter used in the outdoor unit.

5.1.18. RF frequency range

The frequency range of the installed converter module.

5.1.19. L-band Frequency Range

The usable L-band frequency range, this depends on the range of the used frequency converter.

5.1.20. Frequency Conversion Formula

The conversion formula from L-band frequency to RF frequency as defined by the used converter module.

5.1.21. RF gain

The average gain over the defined RF frequency band of the installed converter module.

RF gain : 2.3 dB system menu

L-band frequency : 950 – 1750 MHz system menu

RF frequency : 5850 – 6650 MHz system menu

RF freq = 7600 – L-band freq system menu

converter : NTC/3631/DZ system menu



5.2. Control Menu The control menu allows the operator to monitor the main device control parameters. If the modulator operates under local control, then they may also be changed via this menu. All the control parameters together form a configuration that can be stored in permanent memory (see 5.1.1. and 5.1.2.).

Some selections can be inaccessible to the operator. These selections become available in upgraded devices (see data sheets, contact Newtec Cy for upgrade options). 5.2.1. Interface Rate

The interface rate is adjustable in steps of 1 bit/s, within the range of 0.055 Mbit/s up to 110.0 Mbit/s. The used framing is also indicated (188, 204 byte or unframed when framing is set to internal).

5.2.2. Symbol Rate

The symbol rate is adjustable in steps of 1 baud, within the range of 0.060 Mbaud up to 60.0 Mbaud for QPSK and 0.060 Mbaud up to 45.0 Mbaud for 8PSK or 16QAM.

interf. rate (188) : 8.294118 Mbps control menu new: . Mbps

symbol rate : 6.000000 Mbaud control menu new: . Mbaud



5.2.3. Modulation and FEC-rate

Use + or – to scroll through the available FEC-rates and modulation types.

The selection of the FEC-rate and modulation are coupled and depend on the present modulation standard of the device (see 5.2.19.). Possible selections are:

Modulation FEC-rate Standard QPSK 1/2 * (188/204)

2/3 * (188/204) 3/4 * (188/204) 5/6 * (188/204) 6/7 * (188/204) 7/8 * (188/204)

DVB and NTC

8PSK 2/3 * (188/204) 5/6 * (188/204) 8/9 * (188/204)

DVB and NTC

16 QAM 3/4 * (188/204) 7/8 * (188/204)

DVB and NTC

QPSK N.A. SKYPLEX 5.2.4. L-band Frequency

The IF L-band frequency is adjustable in steps of 50 Hz, within the range of 950 MHz up to 1750 MHz, however this range is limited depending on the range of the installed converter module (see 5.1.15).

QPSK modul. – FEC-rate ¾ * 188/204 control menu change with + or -

L-band frequency : 1450.00000 MHz control menu new : . MHz



5.2.5. RF Frequency

The RF frequency is adjustable in steps of 50 Hz, within the range determined by the installed frequency converter (see 5.1.14).

5.2.6. Channel Equaliser

The channel equalizer allows for optimalization of the modulator - demodulator link. At frequency change (IFL or RF), the channel equalizer is placed at the center of its range. Then it can be tuned, in steps of 2 % over ± 50 % of its range. For technical background and use see application note NTC/2080/APN07 (appendix A).

5.2.7. Modulation

The modulation can be disabled for calibration and tuning. Then the modulator will emit a pure unmodulated carrier; otherwise it indicates the used modulation type (QPSK, 8PSK or 16QAM).

Remember if you want to change the modulation-type that this must be done in the modulation and FEC-rate screen (see 5.2.3.)

RF frequency : 6150.00000 MHz control menu new : . MHz

channel equaliser : +0% of range control menu new :

modulation : QPSK control menu toggle with <enter>



5.2.8. Internal L-band transmit

The internal L-band transmit control enables or disables the signal path from the modulator output to the L-band combiner in the NTC/3631/AZ feedthrough module. Internal L-band transmit is switched off by an active L-band transmit suppressing alarm. After the disappearance of these alarms then L-band transmit is automatically switched on again. These alarms are: external reference for 10.0 MHz oscillator (see 5.4.8.), 10.0 MHz reference (see 5.4.9.), 70 MHz local oscillator (see 5.4.10.), synthesizer (see 5.4.11.) and control settings (see 5.4.2.). Commands which modify the transmitted signal and its spectrum disables the L-band transmission unconditionally. These commands are: interface rate (see 5.2.1.), symbol rate (see 5.2.2.), FEC-rate and modulation type (see 5.2.3.), interface framing (see 5.2.20.) and excess bandwidth (see 5.2.21.). After such a change, the operator has to inspect the generated signal and then re-enable transmit.

5.2.9. IF Output Level

The output level at IFL is adjustable in steps of 0.1 dBm, in the range from -35.0 dBm up to -5.0 dBm. The level at the RF output is the IFL output level plus the RF gain (see 5.1.17.). There is a full frequency band accuracy of about ± 5 dB. This guarantees a nominal IFL output level in the range of -30.0 dBm up to -10.0 dBm. For the range -35.0 up to -20.0 dBm the fixed 15.0 dB attenuator is used (see 5.2.10.). Due to the inaccuracy of this attenuator, a discontinuity at -20.0 dBm occurs.

internal L-band transmit : enabled control menu toggle with <enter>

IF output level : -25.0 dBm control menu change with + or -



5.2.10. IF Output Attenuator

The IF output attenuator is enabled in the level range from -35.0 dBm up to -20.0 dBm and disabled in the range from -20.0 dBm up to -5.0 dBm. The change of the attenuator status immediately increases or decreases the IF output level with 15.0 dB.

5.2.11. RF Output Transmit

The RF output transmit control enables or disables the signal path from the L-band combiner output towards the RF output in the NTC/3631/AZ feedthrough module. RF transmit is switched off by an active RF transmit suppressing alarm. After the disappearance of these alarms then RF transmit is automatically switched on again. These alarms are: external reference for 10.0 MHz oscillator (see 5.4.8.), 10.0 MHz reference (see 5.4.9.), 100 MHz local oscillator (see 5.4.18.) and phase lock DRO (see 5.4.19.).

5.2.12. External L-band Input

The external L-band transmit control enables or disables the signal path from the external L-band input to the L-band combiner in the NTC/3631/AZ feedthrough module.

IF output attenuator : 15 dB control menu toggle with <enter>

RF output (50 Ohm) : enabled control menu toggle with <enter>

external L-band input : disabled control menu toggle with <enter>



5.2.13. 10.0 MHz Reference Oscillator Source

The 10.0 MHz oscillator is the source for the synthesis of the IFL and RF carrier frequencies and interface and symbol rate. This oscillator can operate with internal reference or an external 10.0 MHz oscillator can be supplied to the modulator. Evidently the external 10 MHz source must have al least equal or better specs than the internal.

5.2.14. Transmit Data Source

The standard operation is to use the external data input as source for the transmit data. For test and installation purposes, an internal PRBS data generator can be used as transmit data source. This data source generates a PRBS compatible with the HP3764, W&G SF-60 and Anritsu MP1550 BER testers. Note that the internal PRBS source has to be used in conjunction with the internal MPEG framing (see 5.2.20.) and internal clock (5.2.15.).

10 MHz osc : internal control menu toggle with <enter>

transmit data : external control menu toggle with <enter>



5.2.15. Transmit Clock Source

The selection of the external clock as transmit clock, slaves the transmit clock to the interface clock. This means that there is no rate adaptation, all data received over the interface is transmitted without modification. If the external clock is not present or not sufficient (data interface alarm, see 5.4.15.) then the modulator falls automatically back to the internal clock and sends stuffing MPEG frames (AIS or “all ones”). Automatic fallback is disabled when the test functions are enabled. For an internal transmit clock (free running), the given interface rate is the maximum that can be send with the corresponding symbol rate, because MPEG null packets are inserted when the transmitter runs out of data (upwards rate adaptation). Data is lost if the interface rate is higher than the given rate. This mode is advised when a multiplex source with an unstable internal clock is used. Then the maximum interface rate is to be placed at a slightly higher rate (e.g. 5% higher).

Interface dependant remarks : - for the NTC/3361/HG interface module (ASI, SPI and RS422 interfaces) : when the

ST frequency is to be used as transmit clock, then it must be equal to the interface rate and the transmit clock selection must be set to external. Note that the selection of the internal transmit clock while the HSSI interface uses the ST clock leads to MPEG null packet insertion (stuffing) if the interface rate is higher than the ST frequency and an incompatibility if the interface rate is lower than the ST frequency.

- for the NTC/3359/xx rate adapter module : an additional transmit clock selection is

available, the rate adapted transmit clock. For this clock, the interface rate is completely independent of the symbol rate, since upward and downward rate adaptation is possible. Take care: the given interface rate indicates the maximum amount of significant data that can be sent without information loss when the excess of stuffing frames are removed (downward rate adaptation). The rate adapter module also updates the time stamp of the PCR-packets and drops the received null packets. These null packets are MPEG packets with PID value 1FFF hexadecimal. For the NTC/3359/xx module the selection the internal transmit clock is obsolete. This selection is however maintained for the SKYPLEX-TDMA standard and test purposes, when the internal PRBS-generator is used (see 2.2.).

- for the SKYPLEX-TDMA standard : the data is received with external clock and

transmitted with internal clock. For this standard the null packet insertion is disabled.

transmit clock : external control menu toggle with <enter>



5.2.16. Interface

The selectable interface depends on the type of interface module NTC/33xx/xx installed in the modulator.

5.2.17. Interface Equaliser (only for G703)

The G.703 interface equalizer compensates for cable effects in function of the interface rate and the expected cable loss. This parameter only applies to G703 interfaces. The equalizer setting is selected out of four pre-set values, according to the following table:

interface rate cable loss equalizer 2 MHz 0.0 to -10.0 dB 0 6 - 8 - 16 MHz 0.0 to -4.1 dB 0 -2.4 to -6.5 dB 1 34 MHz 0.0 to -3.5 dB 0 -2.6 to -8.0 dB 1 -6.0 to -9.9 dB 2 -8.6 to -13.2 dB 4 44 MHz 0.0 to -6.0 dB 0

interface : electr. ASI-A (coax-2) control menu toggle with <enter>

interf. equaliser : 0 control menu toggle with <enter>



5.2.18. Modulation Standard

§ DVB § NTC § Skyplex SCPC § Skyplex TDMA HB5 § Skyplex TDMA HB6

Note: The Skyplex TDMA standard was split into 2 separate standards depending on transmissions over Hotbird 5 or 6, the difference is to be found in the contents of the pre-amble.

The DVB standard, EN 301210 uses the following settings : - QPSK, 8PSK or 16QAM modulation - FEC-encoding enabled - DVB scrambling - interleaver enabled The NTC standard, EN 300421 for QPSK modulation and NTC-proprietary for 8PSK and 16QAM modulations, uses the following settings : - QPSK, 8PSK or 16QAM modulation - FEC-encoding enabled - DVB scrambling - interleaver enabled For the two SKYPLEX standards, SCPC and TDMA, the following specific settings are used : - QPSK modulation - FEC-encoding disabled - SED scrambling - interleaver disabled

- external MPEG framing, 188 byte (preferred) or 204 byte frames

For more information see application note NTC/2080/APN08 (appendix B).

modulation standard : DVB control menu change with + or -



5.2.19. MPEG Framing

The interface MPEG framing defines the data format received at the interface. DVB compliant transmission always requires external framing. Framing can be 188-byte packet mode, where the device adds the RS-code bytes.

In 204-byte packet mode, the 16 dummy bytes or RS parity bytes from the input are ignored and replaced by fresh RS parity bytes. This means that the RS coding provides full protection on the satellite segment, and none on the base band interface.

In combination with a NTC/2063/xx demodulator, a non-DVB compliant transmission of continuous data can be realized by selecting the internal framing. Then the device inserts after each 187 data bytes a SYNC-byte, to generate a “pseudo” MPEG data stream. Take care that the external transmit clock is selected with this framing option, to prevent the insertion of dummy MPEG frames. 5.2.20. Excess Bandwidth

The excess bandwidth defines the RCRO factor for the matched filter at the modulator output. The standard 35% RCRO or the additional 25% can be selected.

If the auto select mode is used for the choice of the excess bandwidth, then 35 % RCRO is chosen for the QPSK modulation modes and 25% RCRO for 8PSK and 16 QAM modulation.

5.2.21. Spectrum Inversion The spectrum inversion off mode, or direct spectrum, corresponds with the INTELSAT specification IESS-308 (Rev.8 - pgs 18 & 69) and with the DVB standard ETS 300 421 (December 1994).

MPEG framing : external, 188 byte mode control menu toggle with <enter>

Tx excess bandwidth : auto 35% control menu toggle with <enter>

spectrum inversion ; RF OFF – IFL OFF control menu toggle with <enter>



5.2.22. Amplitude Slope Equaliser

Using this equalizer, which has a maximum range of ± 2 dB/50 MHz, can compensate an amplitude slope in the upconverter or the HPA. This is done by changing the corresponding control parameter in steps of 1 unit, in the range ± 7 units.

Note that the spectrum regrowth of a complete earth station should be below -26 dBc. In practice a -35 dBc regrowth can be guaranteed when the equalizer is activated.

amplitude slope equaliser ; + 0 control menu change with + or -



5.3. Monitor Menu The monitor menu supplies information about variables measured in the modulator. The operator cannot modify these variables. 5.3.1. Internal Temperature

The internal temperature of the modulator must be within the range of +10 and +70° C (see 5.4.7.). Typical, this temperature should be around 40°C (± 10°C).

5.3.2. 10.0 MHz Oscillator Voltage

The voltage corresponds to the level of the 10.0 MHz signal (internal or external) . If this level is lower than 1.0 V a 10.0 MHz oscillator alarm will be generated (see 5.4.9).

5.3.3. 10.0 MHz Oscillator Frequency Variation

In this version not applicable.

5.3.4. Clock Offset

The difference in ppm between the expected and the actual symbol rate when using external transmit clock.

internal temperature : +35.4 C monitor menu

clock offset : + 0.00 ppm monitor menu

10.0 MHz oscillator voltage : 4.9 V monitor menu

10.0 MHz osc. freq. var. : not appl. monitor menu



5.3.5. Buffer Contents

The contents of the FIFO buffer, used between the interface and the modulator part. Optimally this should be at 50%.

5.3.6. Occupied Bandwidth

The –26 dB bandwidth of the modulated signal. This is calculated by multiplying the symbol rate with the roll-off factor (x 1.25 for QPSK and x 1.35 for 8PSK and 16QAM).

5.3.7. Rate Adapter Packet Count

This is the net transport rate or the number of MPEG non-null packets that are passed to the modulator each second when using the NTC/3359/xx rate adapter interface module.

5.3.8. Rate Adapter Peak Delay

This is the largest delay, measured over a second that an MPEG packet remains in the rate adapter buffer when using the NTC/3359/xx rate adapter interface module.

buffer contents : 49.78% of 2.0 kbyte monitor menu

occupied bandwidth : 8.100 MHz monitor menu

rate adap. packet count : 0 / sec monitor menu

rate adap. peak delay : 0 ms/sec monitor menu



5.3.9. Upconverter DRO lock voltage

The DRO is locked, if this voltage is stable and within a range of about 2 to 8 volt. The exact alarm level range depends on the used DRO type. For normal, optimal operation, this voltage should be around +5.0 volt. If an alarm appears or if this voltage comes close to the alarm limits, then re-adjustment is required. Please contact Newtec for the tuning procedure.

5.3.10. Outdoor Unit Temperature

The temperature as measured in the NTC/2505/xL outdoor converter.

5.3.11. Transmit Power Voltage

The transmit power voltage, as measured by the NTC/2505/xL outdoor converter, is a voltage indication relative to the transmitted power by the SSPA. The translation from voltage to power depends on the used SSPA type. This voltage is measured in the range from 0.00 volt up to +4.00 volt. Indications above +4.00 volt give only a quantitative indication of the level, due to limitations of the input circuit. If the SSPA does not provide this voltage, the measured value is undefined.

DRO lock voltage : 6.1 volt monitor menu

outdoor unit temperature : 40.2 C monitor menu

transmit power voltage : 2.5 V monitor menu



5.3.12. SSPA temperature voltage

The SSPA temperature voltage, as measured by the NTC/2505/xL outdoor converter, is a voltage indication relative to the temperature in the SSPA. The translation from voltage to temperature depends on the used SSPA type. This voltage is measured in the range from 0.00 volt up to +5.00 volt. If the SSPA does not provide this voltage, the measured value is undefined.

SSPA temperature voltage: 3.2 V monitor menu



5.4. Alarm Menu The modulator has 2 indications for each guarded function: status and event counter. The status indicates the actual situation of the guarded function:

♦ O.K. : the function operates as expected ♦ ALARM : a malfunction is detected ♦ memorized alarm : a malfunction has been detected, but has now disappeared ♦ not applicable : the guarding of this alarm is not needed for the present settings ♦ masked : the guarding of this alarm is suppressed by the operator

The event counter indicates the number of times that an alarm has occurred since power-on or the last counter reset. The occurrence of an alarm is the status transition from “O.K.” to “ALARM”. The counter saturates at 255 events. 5.4.1. Reset All Memorized Alarms

Pressing the <C>-key (clear) resets all memorized alarms and event counters.

5.4.2. Control Setting

The device indicates an incompatibility if a new control setting is conflicting with one or more of the other settings. A number indicating the type of incompatibility, is to be interpreted as a bitmap

(bit 7 = MSB). The corresponding bit is set if there is an incompatibility between:

bit 7 : control setting and device capability bit 6 : not used bit 5 : RF frequency and converter module bit 4 : interface rate and ST frequency bit 3 : not used bit 2 : selected interface and interface module bit 1 : selected interface and interface rate bit 0 : symbol rate and FEC/modulation mode These indications are cleared when the incompatibility is removed.

reset all memorized alarms with <clear> alarm menu reset counter with <clear>

control setting : OK alarm menu reset counter with <clear>



5.4.3. +5.0 Volt Power Supply

A +5.0 volt power supply alarm indicates that this power supply exceeds the +4.80 volt or +5.20 volt limit. The hardware power supply circuit generates a hardware reset if this power supply drops below +4.60 V or rises above +5.40 V.

5.4.4. -5.0 Volt Power Supply

A -5.0 volt power supply alarm indicates that this power supply exceeds the -5.50 volt or -4.50 volt limit.

5.4.5. +15.0 Volt Power Supply

A +15.0 volt power supply alarm indicates that this power supply exceeds the +14.0 volt or +16.0 volt limit.

5.4.6. -15.0 Volt Power Supply

A -15.0 volt power supply alarm indicates that this power supply exceeds the -16.0 volt or -14.0 volt limit.

5.4.7. Device Temperature

A device temperature alarm indicates that this temperature exceeds the +10° C or +70° C limit.

+5.01 V pow.sup. no alarm number 0 alarm menu reset counter with <clear>

-5.09 V pow.sup. no alarm number 0 alarm menu reset counter with <clear>

+15.07 V pow.sup. no alarm number 0 alarm menu reset counter with <clear>

-14.98 V pow.sup. no alarm number 0 alarm menu reset counter with <clear>

dev. temperature no alarm number 0 alarm menu reset counter with <clear>



5.4.8. External Reference for 10.0 MHz Oscillator

When an external 10.0 MHz reference oscillator is used, the absence of this external reference is indicated as an alarm. This alarm is not applicable if the internal 10.0 MHz reference oscillator is selected.

5.4.9. 10.0 MHz Reference

When either the internal or the external reference fails, a 10.0 MHz reference alarm is generated.

5.4.10. 70 MHz Local Oscillator PLL

Indicates a malfunction of this internal oscillator. This alarm can also cause a synthesizer alarm.

5.4.11. Synthesizer

Indicates a failure in the hardware that generates the L-band carrier frequency.

ext. ref. 10 MHz not appl. number 0 alarm menu reset counter with <clear>

10.0 MHz oscill. no alarm number 0 alarm menu reset counter with <clear>

Synthesizer no alarm number 0 alarm menu reset counter with <clear>

70 MHz LO-PLL no alarm number 0 alarm menu reset counter with <clear>



5.4.12. Transmit Level

Indicates that the requested transmit level at L-band cannot be reached. This is caused by saturation of the level generating hardware, due to internal compensation and/or calibration. This alarm can be removed by increasing or decreasing the transmit level.

5.4.13. Clock PLL

Generated when the transmit clock is not synchronized to the interface clock, if the device operates with external transmit clock.

5.4.14. Data Interface

Indicates a malfunction of the interface module or that no valid input signal (data and/or clock) is received via this module. The verified functions depend on the selected inputs and contain among others: clock synchronization, coding status, interface buffer over/underflow and power presence (see data sheets), just as the presence of the external clock and/or data. When the device operates according to the DVB standard, then the presence of this alarm generates the transmission of null packets (all ones or AIS). L-band transmit is suppressed when the alarm is present and the SKYPLEX standard is selected. Note that for an ASI interface, the polarity inversion of the received data causes an interface alarm. Inverting the data externally can solve this.

transmit level no alarm number 0 alarm menu reset counter with <clear>

clock PLL no alarm number 0 alarm menu reset counter with <clear>

data interface no alarm number 0 alarm menu reset counter with <clear>



5.4.15. Input Framing

Indicates that the MPEG framing is missing on the incoming data. This alarm is not applicable when internal framing is selected.

5.4.16. Buffer Overflow

Indicates that the data buffer in the modulator contains too much data. On the occurrence off this alarm, about 1 Kbytes of data is lost.

5.4.17. Buffer Underflow

This alarm indicates that the data buffer in the modulator contains not enough data. On the occurrence of this alarm, about 1 Kbytes of undefined additional data is sent.

5.4.18. 100 MHz Local Oscillator - PLL

Indicates a malfunction of the hardware which generates the RF carrier frequency. This can also cause a RF phase lock DRO alarm.

5.4.19. RF Phase Lock DRO

Indicates a malfunction of the hardware that generates the RF carrier frequency. This alarm is not applicable when RF transmit is disabled.

buffer overflow no alarm number 0 alarm menu reset counter with <clear>

buffer underflow no alarm number 0 alarm menu reset counter with <clear>

RF loc. osc. PLL no alarm number 0 alarm menu reset counter with <clear>

input framing no alarm number 0 alarm menu reset counter with <clear>

100 MHz LO-PLL no alarm number 0 alarm menu reset counter with <clear>



5.4.20. Indoor – Outdoor Unit Communication

The IDU-ODU communication alarm indicates that the NTC/2505/xL outdoor converter does not responds to the communication requests from the indoor unit. This indicates that the outdoor unit is not connected, is powered off or has a malfunction. This alarm is not applicable when outdoor unit M&C is disabled. The presence of this alarm suppresses transmit at RF.

5.4.21. Outdoor Unit Power Supply

The ODU power supply alarm indicates that at least one of the power supply voltages and/or currents in the NTC/2505/xL outdoor converter is out of its allowed range. This alarm is not applicable when outdoor unit M&C is disabled.

5.4.22. Outdoor Unit 100 MHz Reference

The ODU 100 MHz reference level indicates that the 100 MHz reference for the oscillators in the NTC/2505/xL outdoor converter is missing or is of poor quality, i.e. to low in level. This alarm is not applicable when outdoor unit M&C is disabled.

5.4.23. Outdoor Unit SSPA

The ODU SSPA alarm indicates that the SSPA, which is operating with the NTC/2505/xL outdoor converter, is not connected, is powered off or has a malfunction. This alarm must be masked if the used SSPA does not provide an alarm indication towards the NTC/2505/xL outdoor converter.

IDU – ODU no alarm number 0 alarm menu reset counter with <clear>

ODU power supply no alarm number 0 alarm menu reset counter with <clear>

ODU 100 MHz ref. no alarm number 0 alarm menu reset counter with <clear>

SSPA no alarm number 0 alarm menu reset counter with <clear>



6. REMOTE MONITORING AND CONTROL A master control unit, typically a Personal Computer, can supervise one or more devices via the Remote Monitoring and Control Protocol (RMCP), a message oriented protocol.

6.1. Interface Hardware

The modulator contains the hardware for the RS485 and RS232 interface. Selection is possible in the system menu when test functions are enabled.

WARNING! The use of the wrong hardware can damage this device, the remote control unit and possible other devices on the bus.

6.1.1. RS485 Hardware

The RS485 interface is a multi-user serial interface that allows one master control unit to supervise several devices in parallel.

shield (ground) 1 6 output : receive data B Polarity of receive and send data N.C. 2 7 N.C. data logic 1 : Va < Vb input : send data A 3 8 N.C. data logic 0 : Va > Vb output : receive data A 4 9 input : send data B signal ground 5

The control signals are not used for RS485. Typical electrical levels for Va and Vb are 0 volt and 5 volt.

MON & CTRL5

9

1

6



6.1.2. RS232 Hardware

The RS232 interface is a point-to-point serial interface that allows one master control unit to supervise only one device.

shield (ground) 1 6 N.C. input : receive data (RD) 2 7 output : request to send (RTS) output : transmit data (TD) 3 8 input : clear to send (CTS) output : data terminal ready (DTR) 4 9 N.C. signal ground 5

Polarity of the signals : data logic 1 : Vdata < 0 V data logic 0 : Vdata > 0 V control logic 1 : Vsig > 0 V control logic 0 : Vsig < 0 V Typical electrical levels are between 3 volt and 12 volt.

MON & CTRL5

9

1

6



6.1.3. Serial Interface - Line Settings The main line settings for this serial interface are :

asynchronous data transfer 1 start bit (logic "0") 7 data bits (LSB first on line) even parity 1 stop bit (logic "1") 9600 baud

There is no flow control on the serial interface. Next to correct formatted messages, the only significant character is the SYNC-character (value 16 hex), which is sent by the device to indicate that it is busy executing the command and preparing the response. This prevents other devices from taking control of the bus if the response cannot be given immediately.



6.2. Message Exchange Protocol The control unit sends a “request” message to a device, identified by its unique address. The addressed device interprets the message, performs the requested action and sends back a “response” message.

The receiving device rejects all messages with transmission errors without any further action. Transmission errors are: no stop bit, parity error, LRC-error and message receive buffer overflow. All correct formatted messages, except some special system messages, are responded by the addressed device with an acknowledge message. Only in a few restricted cases, the device does not respond to a request form the control unit. This is for example the case when a general device reset is requested. Correctly received messages, which can not be handled by the device, are refused via a no-acknowledge “error” message, containing the reason why the message is rejected. A device never sends messages on its own initiative. It only responds to a request form the control unit.

The total transmit time of a complete message may not exceed 250 ms. If the message is not completed within this time it is discarded.



6.3. Message Format The general syntax for all messages is :

♦ start byte ♦ address byte ♦ message header ♦ message data ♦ end of text byte ♦ checksum byte

6.3.1. Start Byte The start byte defines unequivocal the beginning of a new message. There are three possible start bytes:

♦ 02hex :start-of-text (STX), used for a request send by the control unit to a device

♦ 06hex :acknowledge (ACK), used for the response from a device to the control unit

♦ 15hex: no-acknowledge (NAK), used for the “error” response from a device to the control unit.

6.3.2. Address Byte

6.3.2.1. Address range The address identifies the destination device for the request message and the source device for the response message. Each device must have a unique address when the control unit guards more than one device via a multi-user bus. Valid addresses are in the range 49 (31hex, ASCII “1”) up to 109 (6Dhex, ASCII “m”). The indoor and outdoor units are two different logical devices for RMCP, although they communicate via the same electrical link. The outdoor unit has the address of the indoor unit raised by one.

For a limited set of messages, the RMCP-broadcast address 111 (6Fhex, ASCII “o”) can be used. This address is reserved for (test) systems with only one device connected to the control unit. Messages that can be handled with the broadcast address are the device identification and the RMCP-address.



6.3.2.2. Multiple addressing Multiple identical parts that use the same messages in a device are distinguished via sub-addressing. A colon “:” precedes a sub-address (ASCII code 3Ahex). Valid sub-addresses are in the range 49 (31hex, ASCII “1”) up to 110 (6Ehex, ASCII “n”). Thus with sub-addressing, the complete message format is: <stx><addr>:<sub-addr><header><data><etx><lrc> The “broadcast” sub-address “o” (ASCII code 6Fhex) indicates that the command applies to all parts in the device, which use the corresponding message. This can be used for commands only. When a monitoring value is requested via the broadcast sub-address, then the value for the first part in the sub-address range is returned.

6.3.3. Message Header

The header defines the contents of the message and thus how the device should handle it. Most headers consist of three capital or minor ASCII characters (respectively 41hex up to 5Ahex and 61hex up to 7Ahex). The header syntax is case sensitive. For some special purpose messages, a one-character header is used. This is an ASCII representable character in the range 20hex up to 7Fhex, capital and minor letters excluded.

6.3.4. Message Data The message text is a string of ASCII representable characters (20hex to 7Fhex). The header defines the meaning and size of this string. Possible message text is:

♦ no data, this is indicated as the “null”-string ♦ a query for information, indicated by a question mark “?”.

Other possible queries are minimum value “>“, maximum value “<“ and with reset “!”

♦ an enumeration, selected from a limited set of alternatives ♦ a numerical value, with the format and units as given for each

command. Format and size are fixed. Example “s##.#” for sign, two digits, decimal dot and one digit

♦ a text string, with fixed or variable length ♦ a dummy argument, this is a string of question marks that

replaces the normal value when the requested parameter is unknown

♦ a not applicable indication, this is a string of “#”-signs, which replaces the normal value when the requested parameter is not applicable.



6.3.5. End of Text Byte

The end of text byte indicates the end of the message text. This is the "end-of-text" character, with as value 03 hex. This is the last but one byte of the complete message. It is only followed by the checksum.

6.3.6. Checksum Byte

The last byte of each message is a checksum. This is a one-byte longitudinal redundancy check (LRC). It is calculated as the bit wise exclusive-OR of all the message bytes, including the message delimiters (STX, ETX, ) and the address. The bit wise exclusive-OR function can be calculated by writing the binary value of all the concerned bytes beneath each other and then performing a modulo-2 addition on each column, thus without carry propagation (see examples).



6.3.7. Examples For a unit with address 51 (33hex, ASCII “3”) 6.3.7.1. request device identification: “0?“ <STX>30?<ETX>= <STX> 02 hex 000 0010 3 33 hex 011 0011 0 30 hex 011 0000 ? 3F hex 011 1111 <ETX> 03 hex 000 0011 <LRC> 3D hex 011 1101 ASCII “=” 6.3.7.2. enable RF transmit : “TTt1“ <STX>3TTt1<ETX>w <STX> 02 hex 000 0010 3 33 hex 011 0011 T 54 hex 101 0100 T 54 hex 101 0100 t 74 hex 111 0100 1 31 hex 011 0001 <ETX> 03 hex 000 0011 <LRC> 77 hex 111 0111 ASCII “w”



7. REMOTE MONITORING AND CONTROL COMMANDS The header is represented in “bold“ and the data in “italic“ for each possible message. The start byte (STX, ACK or NAK), the address byte, the end of text byte (ETX) and the checksum byte are not given. Their use follows the standard rules unless explicitly given, i.e. the sub-address if needed. Values sent in a response are always the parameters as used by the device. They can differ from the requested values because of internal rounding, saturation or other limitations. The present alarm status indicates if an alarm has occurred since the previous request. So it is required that the control unit regularly interrogates each device, to obtain an accurate overview of their status. The “!”-query of a memorized alarm or state resets the memorized value. Unless mentioned otherwise, all the messages are sent at the indoor unit address.



7.1. System Parameters 7.1.1. Load Configuration <enum> : 0 load done 1 load failed (not loaded) 2 load errors (LRC-error) 3 configuration # does not exist request : SCg# load configuration # response : SCg<enum> load result 7.1.2. Save Configuration <enum> : 0 save done 1 save refused (configuration error or incompatibility) request : SCs# save present settings as configuration # response : SCs<enum> save result 7.1.3. Test Functions <enum> : 0 disabled (operational mode) 1 enabled request : SMm? get present status SMm<enum> change status response : SMm<enum> present or new status 7.1.4. Alarm Mask No remote M&C command. 7.1.5. Device Address for Serial Interface request : =? get present address =### change address response : =### present or new address (decimal) This message may also be send at the RMCP broadcast address. The address byte of the response message is the same as the one in the request message.



7.1.6. Device Control Mode <enum> : 0 local control, no lock-out 1 remote control, no lock-out 2 local control, local lock-out 3 remote control, local lock-out request : SMc? get present status SMc<enum> change device status response : SMc<enum> present or new status 7.1.7. Device Identification request : 0? get device identification response : 0## 2###xx 6###xx## device identification (RMCP-version, device type and firmware number and version) This message may also be send at the RMCP broadcast address. 7.1.8. Device Serial Number request : SLs? get serial number of the device response : SLsyymmddnn serial number of the device 7.1.9. Device Capability request : SLc? get device capability response : SLchhhhhh device capability 7.1.10. Hardware Description request : SSh? get hardware description response : SShhhhh hardware description 7.1.11. Interface Identification request : Isi? get interface identification response : Isi## 3xxxx ######## interface description



7.1.12. ST Frequency Mode <enum> 0 automatic 1 manual request : TIq? get present status

Tiq<enum> change status (test only) response : Tiq<enum> present or new status 7.1.13. Feedthrough Identification request : $000 get feedthrough identification (engineering string 0) response : $NTC/# 3###?xx v#.# SN######### feedthrough identification 7.1.14. Outdoor Unit Monitor and Control <enum> 0 disabled

1 enabled 2 routing only

request : Xcm? get present status

Xcm<enum> change status response : Xcm<enum> present or new status 7.1.15. Outdoor Unit Identification Sent at the address of the outdoor unit request : 0? get device identification response : 0## 2###xx 6###xx### device identification



7.1.16. Converter Identification request : Fsi? get converter identification response : Fsi ## 3xxxxx ######## converter identification 7.1.17. RF Frequency Range request : TFf> get minimum transmit RF frequency

TFf< get maximum transmit RF frequency response : TFf ########### RF frequency limit in Hz 7.1.18. L-band Frequency Range request : TFl> get minimum transmit IF-L frequency

TFl< get maximum transmit IF-L frequency response : TFl ########### IF-L frequency limit in Hz 7.1.19. Frequency Conversion request : FFo? get converter local oscillator frequency response : FFos##### local oscillator frequency, the <-> sign indicates

spectrum inversion in the converter 7.1.20. RF converter gain request : FGs? get present converter gain response : FGss##.# present converter gain in dB



7.1.21. Self Test The RMCP-address indicates if the message is bound for the indoor unit or the outdoor unit. request : SSs? perform self test and send result Sss? get self test result SsS? get self test result SsS! get self test result with reset response : SSs### self test result Sss### self test result SsS### self test result A self test disturbs normal operation. To prevent inconvenience, transmit is switched off during this test. Afterwards, normal operation is resumed. 7.1.19. Device Reset request : SRr! device reset response : no response !! After the reset, the "had reset" flag is activated. During the device reset no messages are handled. The outdoor unit has to be reset via message routing. 7.1.20. Device Reset Flag The RMCP-address indicates if the message is bound for the indoor unit or the outdoor unit. <enum> : 0 no device reset since last flag clear 1 device power-on or reset (since last flag clear) request : Srs? get device reset flag SrS? get device reset flag SrS! get device reset flag with flag clear response : Srs<enum> device reset flag SrS<enum> device reset flag



7.2. Control Parameters 7.2.1. Interface Rate request : TRr? get present rate TRr######### change rate response : TRr######### present or new rate in bit/s 7.2.2. Symbol Rate request : TRs? get present rate TRs######### change rate response : TRs######### present or new rate in baud 7.2.3. FEC-rate and Modulation <enum1> : 1 QPSK modulation 8 8PSK modulation 6 16 QAM modulation <enum2> : 0 no FEC (SKYPLEX only) 1 rate 1/2 * 188/204 2 rate 2/3 * 188/204 3 rate 3/4 * 188/204 5 rate 5/6 * 188/204 6 rate 6/7 * 188/204 7 rate 7/8 * 188/204 8 rate 8/9 * 188/204 request : TMx? get present modulation type and FEC rate TMx<enum1><enum2> change modulation type and FEC rate TMm? get present modulation type TMf? get present FEC rate response : TMx<enum1><enum2> present or new modulation type and FEC rate TMm<enum1> present modulation type TMf<enum2> present FEC rate 7.2.4. IF L-Band Frequency request : TFl? get present frequency TFl> get minimum frequency TFl< get maximum frequency TFl########### change frequency response : TFl########### present or new frequency, or limit in Hz



7.2.5. RF Frequency request : TFf? get present frequency TFf> get minimum frequency TFf< get maximum frequency TFf########### change frequency response : TFf########### present or new frequency, or limit in Hz 7.2.6. Channel Equaliser request : TFe? get present equalizer setting TFe> get minimum equalizer setting TFe< get maximum equalizer setting TFes##### change equalizer setting response : TFes##### present or new equalizer setting, or limit in % 7.2.7. Modulation <enum> : 0 modulation off (pure carrier) 1 QPSK modulation (monitoring only) 7 test modulation (clock/8) (test only) 6 16 QAM modulation (monitoring only) 8 8PSK modulation (monitoring only) 9 modulation on request : TMm? get present status TMm<enum> change status response : TMm<enum> present or new status This command only switches the modulation on and off. The selection of the modulation type is done with the command TMx (see 7.2.3.). 7.2.8. Internal L-Band Transmit (Modulator output) <enum> : 0 disabled 1 enabled request : TTm? get present status TTm<enum> change status response : TTm<enum> present or new status



7.2.9. IF Output Level request : TLl? get present level TLl> get minimum level TLl< get maximum level TLls##.# change level response : TLls##.# present or new level, or limit in dBm If the requested level change is outside the allowed range, it is truncated to the saturation value. 7.2.10. IF Output Attenuator <enum> : 0 disabled 1 enabled request : TLa? get present status TLa<enum> change status response : TLa<enum> present or new status 7.2.11. RF Output Transmit <enum> : 0 disabled 1 enabled request : TTt? get present status TTt<enum> change status response : TTt<enum> present or new status 7.2.12. External L-Band Input <enum> : 0 disabled 1 enabled 2 not applicable request : TTx? get present external L-band input status TTx<enum> change external L-band input status TTy? get present secondary IF output status TTy<enum> change secondary IF output status response : TTx<enum> present or new external L-band input status TTy<enum> present or new secondary IF output status



7.2.13. Transmit Data <enum> : 0 external 1 internal PRBS-generator request : TDi? get present status TDi<enum> change status response : TDi<enum> present or new status 7.2.14. Transmit Clock <enum> : 0 external (slaved) 1 internal (free running) 2 rate adapted request : TRi? get present status TRi<enum> change status response : TRi<enum> present or new status 7.2.15. 10.0 MHz Oscillator <enum> : 0 internal reference (free running) 6 slaved to an external reference request : CSi? get present reference CSi<enum> change reference response : TRi<enum> present or new status



7.2.16. Interface <enum> : 0 external data input DVB-SPI 1 ECL (serial) 2 external serial RS422 3 electrical serial ASI-A 4 electrical serial ASI-B 5 optical ASI 6 G703 - 8 Mbit/s 7 G703 - 17 Mbit/s 8 G703 - 34 Mbit/s 9 G703 - 2 Mbit/s a G703 - 6 Mbit/s b G703 - 45 Mbit/s d HSSI request : TIs? get present status TIs<enum> change status response : TIs<enum> send present or new status 7.2.17. Interface Equaliser request : ILe? get present equalizer setting ILe> get maximum equalizer setting ILe< get minimum equalizer setting ILes##### change equalizer setting response : ILes##### present or new equalizer setting, or limit (pre-set value) 7.2.18. Modulation Standard <enum> : 0 NTC 1 SKYPLEX - SCPC 2 SKYPLEX - TDMA Hotbird 5 3 DVB (default) 4 SKYPLEX - TDMA Hotbird 6 request : SDc? get present status SDc<enum> change status response : SDc<enum> present or new status 7.2.19. MPEG Framing <enum> : 0 external MPEG framing, 188-byte mode 1 internal MPEG framing 2 external MPEG framing, 204-byte mode request : TMe? get present status

TMe<enum> change status response : TMe<enum> present or new status



7.2.20. Excess Bandwidth <enum> : 0 auto (25% for QPSK and 35% for 8PSK - 16QAM) 1 35% RCRO 2 25% RCRO request : TFr? get present status TFr<enum> change status response : TFr<enum> present or new status 7.2.21. Spectrum Inversion <enum> : 1 direct spectrum 2 inverted spectrum request : TMi? get present spectrum status at RF TMi<enum> change spectrum status at RF response : TMi<enum> present or new spectrum status at RF 7.2.22. Amplitude Slope Equaliser request : TLe? get present equalizer setting TLe> get maximum equalizer setting TLe< get minimum equalizer setting TLes##### change equalizer setting response : TLes##### present or new equalizer setting, or limit in unit 7.2.23. ST Frequency request : TIr? get present frequency TIr######### change frequency response : TIr######### present or new frequency in Hz



7.3. Alarm Menu The enumeration for all alarms, unless mentioned otherwise: <enum> : 0 status O.K. 1 alarm 2 not applicable 9 masked 7.3.1.-7.3.4. +5.0 Volt, -5.0 Volt, +15.0 Volt and -15.0 Volt Power Supply request : Sza? get measured +5.0V power supply voltage Szb? get measured -5.0V power supply voltage Szc? get measured +15.0V power supply voltage Szd? get measured -15.0V power supply voltage Ssv? get present power supply alarm status (summary) SsV? get memorized power supply alarm status (summary) SsV! get memorized power supply alarm status (summary) with reset response : Szas##.## measured +5.0V power supply voltage in volt Szbs##.## measured -5.0V power supply voltage in volt Szcs##.## measured +15.0V power supply voltage in volt Szds##.## measured -15.0V power supply voltage in volt response : Ssv<enum> present power supply alarm status (summary) SsV<enum> memorized power supply alarm status (summary) The measurable limits are preceded by the "<"- or ">"-signs and that the Svv message indicates alarm if at least one of the four power supplies is (or has been) out of range. 7.3.5. Device Temperature request : Stt? get present alarm status StT? get memorized alarm status StT! get memorized alarm status with reset response : Stt<enum> present alarm status StT<enum> memorized alarm status



7.3.6. External 10.0 MHz Reference request : Cxs? get present external source status CxS? get memorized external source status CxS! get memorized external source status with reset response : Cxs<enum> present external source status CxS<enum> memorized external source status 7.3.7. 10.0 MHz Reference request : Csl? get present 10.0 MHz reference status CsL? get memorized 10.0 MHz reference status CsL! get memorized 10.0 MHz reference status with reset response : Csl<enum> present 10.0 MHz reference status CsL<enum> memorized 10.0 MHz reference status 7.3.8. 70 MHz Local Oscillator PLL request : Czl? get present alarm status CzL? get memorized alarm status CzL! get memorized alarm status with reset response : Czl<enum> present alarm status CzL<enum> memorized alarm status 7.3.9. 100 MHz Local Oscillator PLL request : Cys? get present alarm status CyS? get memorized alarm status CyS! get memorized alarm status with reset response : Cys<enum> present alarm status CyS<enum> memorized alarm status 7.3.10. RF Phase Lock DRO request : Tsi? get present alarm status TsI? get memorized alarm status TsI! get memorized alarm status with reset response : Tsi<enum> present alarm status TsI<enum> memorized alarm status



7.3.11. Synthesizer request : Tsp? get present alarm status TsP? get memorized alarm status TsP! get memorized alarm status with reset response : Tsp<enum> present alarm status TsP<enum> memorized alarm status 7.3.12. Transmit Level request : Tls? get present alarm status TlS? get memorized alarm status TlS! get memorized alarm status with reset response : Tls<enum> present alarm status TlS<enum> memorized alarm status 7.3.13. Clock PLL request : Trl? get present alarm status TrL? get memorized alarm status TrL! get memorized alarm status with reset response : Trl<enum> present alarm status TrL<enum> memorized alarm status 7.3.14. Data Interface request : Tis? get present alarm status TiS? get memorized alarm status TiS! get memorized alarm status with reset response : Tis<enum> present alarm status TiS<enum> memorized alarm status 7.3.15. Input Framing request : Tel? get present alarm status TeL? get memorized alarm status TeL! get memorized alarm status with reset response : Tel<enum> present alarm status TeL<enum> memorized alarm status



7.3.16.-17. Buffer Overflow and Underflow <enum> : 0 status O.K. 1 alarm 2 buffer overflow 3 buffer underflow 9 masked request : Tio? get present alarm status TiO? get memorized alarm status TiO! get memorized alarm status with reset response : Tio<enum> present alarm status TiO<enum> memorized alarm status 7.3.18. Reset All Memorized Alarms The jointly reset of all memorized alarms can be done via the “all alarm string” request (see 7.3.16.). 7.3.19. Control Setting request : Ssi? get present incompatibility indication response : Ssi### present incompatibility indication (decimal) 7.3.20. All Alarms The RMCP-address indicates if the message is bound for the indoor unit or the outdoor unit. The listed indoor unit alarms : a : controller had reset (Srs - see 7.1.23.) b : RF transmit status (on/off) (Ttt - see 7.4.8.) c : power on self test (Sss - see 7.1.21.) d : power supply alarm (Ssv - see 7.3.3-6.) e : device temperature (Stt - see 7.3.7.) f : (transmit) synthesizer (n.a.) g : transmit HPA (n.a.) h : transmit summary alarm (n.a.) i : receive synthesizer (n.a.) j : receive summary alarm (n.a.) k : 10.0 MHz reference (Csl - see 7.3.9.) l : external 10.0 MHz reference oscil. (Cxs -see 7.3.8.) m : RF phase lock DRO (Fsa - see 7.3.11.) n : RF-head communication (Xcs - see 7.3.12.) o : 100 MHz local oscillator PLL (Cys - see 7.3.10.) p : converter summary (n.a.)



7.3.21. General Device Alarm The RMCP-address indicates if the message is bound for the indoor unit or the outdoor unit. <enum> : 0 device OK

1 device alarm (logical-OR of alarms a, c, d, f, h, k, l, m, o and p for indoor unit; logical-OR of alarms a, c, d, g, h and k for outdoor unit, see 7.3.16.)

request : Ssa? get present alarm status SsA? get memorized alarm status response : Ssa<enum> present alarm status SsA<enum> memorized alarm status 7.3.22. Indoor Unit - Outdoor Unit Communication request : Xcs? get present alarm status XcS? get memorised alarm status XcS! get memorised alarm status with reset response : Xcs<enum> present alarm status XcS<enum> memorised alarm status Remark that if this alarm occurs, then all the information about th outdoor unit is unknown. This is indicated by sending the dummy argument, a string of question marks, as response data. 7.3.23. Outdoor Unit - Power Supply Message sent at the RMCP-address of the outdoor unit. request : Ssv? get present alarm status SsV? get memorised alarm status SsV! get memorised alarm status with reset response : Ssv<enum> present alarm status Ssv<enum> memorised alarm status 7.3.24. Outdoor Unit - 100 MHz Reference Level Message sent at the RMCP-address of the outdoor unit. request : Cxs? get present alarm status CxS? get memorised alarm status CxS! get memorised alarm status with reset response : Cxs<enum> present alarm status CxS<enum> memorised alarm status



7.3.25. Outdoor Unit - SSPA Message sent at the RMCP-address of the outdoor unit. request : Tha? get present alarm status ThA? get memorised alarm status ThA! get memorised alarm status with reset response : Tha<enum> present alarm status ThA<enum> memorised alarm status



7.4. Monitor Parameters 7.4.1. Internal Temperature request : Sst? get temperature response : Ssts##.# temperature in °C 7.4.2. 10.0 MHz Oscillator Voltage request : Cov? get present oscillator voltage response : Cov +#.# send present oscillator voltage If this voltage is below 1.0 V the response will be <1.0 V, this will cause a 10.0 MHz reference alarm (see section 5.4.9) 7.4.3. Transmit Clock Offset request : Trd? get offset response : Trds###.## offset in ppm 7.4.4. Buffer Contents request : Tip? get buffer contents response : Tip###.## buffer contents in %

7.4.5. Occupied Bandwidth request : Tfb? get bandwidth response : Tfb######### bandwidth in Hz



7.4.6. Upconverter DRO Lock Voltage request : Fsv? get lock voltage response : Fsvs##.# lock voltage in volt 7.4.7. Rate Adaptor Packet Count request : Idp? get packet count response : Idp##### packet count in packets/sec 7.4.8. Rate Adaptor Peak Delay request : Idd? get peak delay response : Idd##### peak delay in ms/sec 7.4.9. Internal L-Band Transmit Status (Modulator output) This is the actual status of the modulator output, at L-band. Transmit is on if it is enabled by the operator (see 5.2.8.) and not suppressed by an alarm. When disabled by the operator or suppressed by an alarm, then transmit is off. <enum> : 0 transmit off 1 transmit on request : Ttm? get present status response : Ttm<enum> present status 7.4.10. RF Transmit Status This is the actual status of the converter output, at RF (or IF). Transmit is on if it is enabled by the operator (see 5.2.11.) and not suppressed by an alarm. When disabled by the operator or suppressed by an alarm, then transmit is off. <enum> : 0 transmit off 1 transmit on 2 not applicable request : Ttt? get present status of (primary) RF output Tty? get present status of second RF output response : Ttt<enum> present status of (primary) RF output Tty<enum> present status of second RF output



7.4.11. Applied IFL Output Level request: Tll? get present level Tll> get minimum level Tll< get maximum level response : Tlls##.# send level or limit in dBm 7.4.12. Outdoor Unit Temperature Message sent at the RMCP-address of the outdoor unit. request : Sst? get temperature response : Ssts##.# temperature in °C 7.4.13. Transmit Power Voltage Message sent at the RMCP-address of the outdoor unit. request : Tpq? get voltage response : Tpqs##.## voltage in volt 7.4.14. SSPA Temperature Voltage Message sent at the RMCP-address of the outdoor unit. request : Thu? get voltage response : Thus##.## voltage in volt



7.5. Test Menu Not applicable via remote interface. Reserved for in factory test and problem solving.

7.6. Error Messages <error code> : 000 undefined error 020 undefined header error 021 header missing or incomplete 022 header contains invalid character(s) 023 header unknown 030 undefined data error 031 data missing or incomplete 032 data contains invalid character 033 data length error 034 data syntax error 110 argument not acceptable (not further detailed) 111 argument out of the acceptable range (enumeration) 112 argument too low (numeric values) 113 argument too high (numeric values) request : any valid message, which can not be handled response : <NAK><address>err<error code><ETX><LRC>



8. SERVICE CAUTION : Servicing for qualified personnel only Warning : The opening of the cover is likely to expose dangerous voltages. Disconnect the instrument from the voltage source before opening it : A. Switch off the power switch on the instrument’s rear panel B. Disconnect the power supply plug C. Remove possible other signal carrying cables

8.1. Maintenance There is no particular maintenance requirement for this device. Procedure for opening the device :

- take care that the device is powered-down and that the external cables are disconnected

- remove the 25 screws from the cover and lift off the cover - remove the 2 screws which fasten the converter at the back panel - loosen the 4 screws which fasten the converter to the carrier plate, DO NOT

REMOVE THEM ! - remove the 3 screws and washers at the left of the carrier plate - open the carrier plate

Procedure for closing the device :

- close the carrier plate - insert the 3 screws and washers at the left of the carrier plate, DO NOT FASTEN

THEM ! - fasten the 2 converter screws at the back panel - fasten the 4 converter screws at the carrier plate - fasten the 3 screws at the left of the carrier plate - place the cover and fasten the 25 cover screws - reconnect the device



8.2. Fan Replacement There are two fans located at the backpanel of the device. These are low voltage DC fans from Multicomp, delivered by Farnell as part number 926 127. They have a life expectancy of more than 50.000 hours, this is more than 5 years, at 40°C. Technical characteristics : 12 Vdc - 1 W - 40 x 40 x 20 mm - 3.4 liters/sec air flow. They can be ordered through Newtec Cy. In the case of failure, take the following steps :

- open the device (see 7.1.) - disconnect the fan cables on the baseband board - remove the four fan screws, spacers and nuts - lift the fan away from the rear panel - lift the fan guard away from the rear panel - install the new fan, take care for the correct orientation : the arrow pointing to the

rear panel, as seen from inside and the two wires at the bottom side - connect the fan cables to the connector on the baseband board, take care for the

correct polarity : the blue wire at “-“ and the red wire at “+” - close the device (see 7.1.)

8.3. Line Fuse Repair The recommended fuses are size 5 by 20 mm, rate T 3.15 A, 250 V (UL recognized and IEC approved). Replace only with same type and rating. The use of other fuses or material is prohibited. The line fuses are housed in a small container above the rear panel power supply connectors. This container is attached to the line module; it cannot be removed. To check the fuses, insert the tip of a screwdriver in the slot at the middle of the container and pry gently to extend the container.

8.4. Installation Interface Module NTC/3xxx/xx After the replacement of the interface board, the unit automatically recognizes it and adapts its operation accordingly. The procedure for opening the device is given in section 7.1.. In case of doubts about the correct functioning of the ASI interface, a coax loop-back between the ASI output and the ASI input A can be made. Select in the test menu the test generator for the ASI monitoring function and set in the control menu the interface rate at 10.8 Mbit/s. If everything is OK, then the data interface alarm should disappear.

8.5. Installation Converter Module NTC/3631/xx See Appendix C.



8.6. Strap Positions Straps on baseband board NTC/3381/xx : The straps are set from factory at the following positions (bold) : strap position P24 1-2 not used

3-4 pin 9 of “alarm contacts” connector unconnected 5-6 +15 volt (unfused) on pin 9 of “alarm contacts” connector

P25 1-2 not used

3-4 pin 7 of “alarm contacts” connector unconnected 5-6 -15 volt (unfused) on pin 7 of “alarm contacts” connector

P26 1-2 +15 volt via fuse (not equipped)

3-4 unconnected 5-6 +15 volt (unfused) for converter module

P27 1-2 -15 volt via fuse (not equipped)

3-4 unconnected 5-6 -15 volt (unfused) for converter module

The procedure for opening the device, when these straps needs to be moved, is given in section 7.1..

Alarm back panel

right side

Mon&Ctrl

1 2 3 4 5 6

P24

P25

1 2 3 4 5 6

2 4 6 1 3 5

2 4 6 1 3 5

P27 P26



8.7. System Test Failure After power-on, the device performs a self test and shows the result on the start-up display. A failed self test is indicated by an error number which provides information about the origin of the defect. This is an hexadecimal bitmap, which refers to the different tests (bit 7 = MSB) : bit 7 : permanent memory error bit 6 : wrong firmware (needs NTC/6121/AA firmware) bit 5 : early waveform loopback error bit 4 : late waveform loopback error bit 3 : equalizer loopback error bit 2 : interface loopback error bit 1 : converter permanent memory error bit 0 : converter not recognized (needs fingerprint) - A “permanent memory error” indicates that an error is detected in the LRC, which protect

the EEPROM of the device. This may indicate that one of the settings is erroneous. To solve this problem, the operator has to verify all the settings of the device in the system

and control menu. The correction of the possible wrong setting(s) in the system menu writes them immediately to EEPROM and recalculates the LRC. Each of the saved configurations has to be verified and corrected if necessary.

If all settings are correct then the error is located in a part of the permanent memory which is

not used or in a not used configuration, since the LRC protects the whole EEPROM. If this is the case, it is sufficient to toggle one of the system settings away from and back to its original setting or to save a configuration to renew the LRC.

If the error(s) persists or reappears, then the modulator must be returned for repair. - A “loopback error” indicates that the considered part has not correctly responded to the

communication with the modulator controller. It is suggested to power-off and again -on the modulator. If the error(s) persists or reappears, then a modulator revision is required.

- A “converter permanent memory error” or a “converter not recognized” failure indicates

that an error is detected in the LRC, of the converter EEPROM, or that the content of the permanent memory is wrong. In both cases, the converter has to be returned for servicing.

- “wrong firmware“ indicates that the modulator has found an NTC/3631/AZ IFL Feedthrough

Module and thus needs the NTC/3631/AA firmware. Please contact NEWTEC Cy for firmware change.



8.8. Troubleshooting Report In order to get a quick response for the settlement of problems requiring assistance from NEWTEC Cy, the information sheet hereafter should be copied, filled in and sent back to NEWTEC Cy, Laarstraat 5, B-9100 Sint Niklaas (Belgium) - Fax: +32 3 780 65 49. It is recommended to complete the troubleshooting report with information on the surrounding equipment and the related interfaces. This contains among other things a block diagram of the whole system, with type indications and connections, just as troubleshooting reports of these devices. Also logging files, from RMCP or any other remote M&C equipment (if available) covering the considered problem, should be included.



CUSTOMER : Fax : Equipment Type Number : NTC/2080/... Serial Number (backpanel) : SN... Date : INITIAL DISPLAY AFTER POWER ON : DVB+8+16 Modulator v... system test ... passed - failed ... 5.1. System Menu 5.1.1. Load Configuration N.A. 5.1.2. Save Configuration N.A. 5.1.3. Test Functions enabled - disabled 5.1.4. Alarm Mask hexadecimal number : 5.1.5. Serial Interface Hardware RS485 - RS232 5.1.6. Device Address for Serial Interface number : 5.1.7. Device Control Mode local - remote 5.1.8. Device Identification - hardware firmware

NTC/2080/... NTC/6120/AA v...

5.1.9. Device Serial Number number : SN... 5.1.10. Device Capability hexadecimal number : 5.1.11. Hardware Description hexadecimal number : 5.1.12. Interface Identification NTC/3... 5.1.13. ST Frequency Mode N.A. automatic - manual 5.1.14. Converter Identification NTC/3631/... 5.1.15. RF Frequency Range MHz : 5.1.16. L-band Frequency Range MHz : 5.1.17. Frequency Conversion formula : 5.1.18. RF Gain dB : 5.2. Control Menu 5.2.1. Interface Rate Mbit/s : 5.2.2. Symbol Rate Mbaud : 5.2.3. Modulation FEC-rate

QPSK - 8PSK - 16QAM 1/2 - 2/3 - 3/4 - 5/6 - 7/8 - 8/9

5.2.4. IF L-Band Frequency MHz : 5.2.5. RF Frequency MHz : 5.2.6. Channel Equalizer % of range : 5.2.7. Modulation off - QPSK - 8PSK - 16QAM 5.2.8. Internal L-Band Transmit (Modulator output)

enabled - disabled

5.2.9. IF Output Level dBm : 5.2.10. IF Output Attenuator 15.0 dB - off 5.2.11. RF Output Transmit enabled - disabled 5.2.12. External L-Band Input or Secondary IF Output

enabled - disabled

5.2.13. 10.0 MHz Oscillator - reference offset

internal - external ppm :

5.2.14. Transmit Data external - internal PRBS 5.2.15. Transmit Clock external - internal - rate adapted 5.2.16. Interface SPI - RS422 - ASI - G.703 - ... 5.2.17. Interface Equalizer pre-set value : 5.2.18. Modulation Standard DVB - NTC - SKYPLEX SCPC - SKYPLEX

TDMA



5.2.19. MPEG Framing external 188 - external 204 - internal 5.2.20. Excess Bandwidth auto - 25% - 35% 5.2.21. Spectrum Inversion L-band : off - on RF : off - on 5.2.22. Amplitude Slope Equalizer unit : 5.2.23. ST Frequency N.A. - MHz : 5.3. Alarm Menu 5.3.1. +5.0 Volt Power Supply O.K. - ALARM - mem.alarm - N.A. + number : 5.3.2. -5.0 Volt Power Supply O.K. - ALARM - mem.alarm - N.A. + number : 5.3.3. +15.0 Volt Power Supply O.K. - ALARM - mem.alarm - N.A. + number : 5.3.4. -15.0 Volt Power Supply O.K. - ALARM - mem.alarm - N.A. + number : 5.3.5. Device Temperature O.K. - ALARM - mem.alarm - N.A. + number : 5.3.6. External Reference for 10.0 MHz O.K. - ALARM - mem.alarm - N.A. + number : 5.3.7. 10.0 MHz Oscillator O.K. - ALARM - mem.alarm - N.A. + number : 5.3.8. 70 MHz Local Oscillator PLL O.K. - ALARM - mem.alarm - N.A. + number : 5.3.9. Synthesizer O.K. - ALARM - mem.alarm - N.A. + number : 5.3.10. Transmit Level O.K. - ALARM - mem.alarm - N.A. + number : 5.3.11. Clock PLL O.K. - ALARM - mem.alarm - N.A. + number : 5.3.12. Data Interface O.K. - ALARM - mem.alarm - N.A. + number : 5.3.13. Input Framing O.K. - ALARM - mem.alarm - N.A. + number : 5.3.14. Buffer Overflow O.K. - ALARM - mem.alarm - N.A. + number : 5.3.15. Buffer Underflow O.K. - ALARM - mem.alarm - N.A. + number : 5.3.16. 100 MHz Local Oscillator PLL O.K. - ALARM - mem.alarm - N.A. + number : 5.3.17. RF Phase Lock DRO O.K. - ALARM - mem.alarm - N.A. + number : 5.3.18. Control Setting O.K. - incompatibility (hex.numb.) : 5.3.19. Reset All Memorized Alarms N.A. 5.4. Monitor Menu 5.4.1. Internal Temperature °C : 5.4.2. 10.0 MHz Oscillator Temperature °C : 5.4.3. 10.0 MHz Osc. Frequency Variation number : 5.4.4. Transmit Clock Offset ppm : 5.4.5. Buffer Contents % of 2 kbyte : 5.4.6. Occupied Bandwidth MHz 5.4.7. Upconverter DRO Lock Voltage volt : 5.4.8. Rate Adaptor Packet Count packet/sec : 5.4.9. Rate Adaptor Peak Delay ms/sec : 5.5. Test Menu

Front panel LED’s L-band External green - off L-band Internal green - off RF Output green - off Active Alarm red - off Memorized Alarm red - off Test yellow - off



Additional comments and remarks : (possible causes for failure, missing signals, components, ...) Please copy this form and complete every input, return to : NEWTEC Cy, Laarstraat 5, B-9100 Sint Niklaas (Belgium) Tel : +32 3 780 65 00 - Fax : +32 3 780 65 49 - E-mail : [email protected]



APPENDIX A : APPLICATION NOTE NTC/2080/APN07 : CHANNEL EQUALISATION FOR HIGH BAUD RATE MODULATORS





APPENDIX B : APPLICATION NOTE NTC/2080/APN08 : CONFIGURING THE NTC/2061/Zx+SK FOR SKYPLEX OPERATION





APPENDIX C : USER MANUAL CONVERTER MODULE NTC/3631/xZ/UMN



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Newtec Mod 2080