88847687 Microwave Nec Pasolink Neo by Akash Ray[1]

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NEC PASOLINK NEO (SDH)

SUBMITTED BYAKASH RAY

7/4/12

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INTRODUCTION To provide reliable digital access links and fully exploit the potential of end-to-end advanced networks, NEC has developed the PASOLINK NEO, a narrow band point-to-point digital microwave relay system operating at radio frequency (RF) bands of 6/7/8/10/11/13/15/18/23/26/28/32/38/52 GHz. This system meets an increasing demand for digital transmission services, and will satisfy the needs for common carrier access links, private links, urban area networks, rural area networks, temporary networks or emergency 7/4/12

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INDEXCONTENT1.

Pg . no 5

KEY SPECIFICATIONS PRODUCT DESCRIPTION

2.

2.1) ANTENNA , ODU

6 2.2) MICROWAVE ANTENNA IMAGE 7 2.3)CONNECTION FROM ODU TO IDU IMAGE 8 2.4)ODU IMAGE 9 2.5) IDU 10, 11 2.6) IDU IMAGE 12 3. DESIGN CONSIDERATION 7/4/12 13

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CONTENT PG NO.

12. IDU & ODU COMPATIBILITY 25 13. EQUIPMENT MENU (PASOLINK NEO) 26 14. IDU FLEXIBILITY 27 15. SYSTEM UPGRADE 28, 29 16. E1 & LAN SETTING 30 31 ,32 17. INSTALLATION & INSTRUCTION 33 18. INSTALLATION FLOW CHART 34 7/4/12 19. IDU MOUNTING

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Key Specifications:Frequencies: 6, 7, 8, 10, 11, 13, 15, 18, 23, 26, 28, 32, 38, and 52 GHz Traffic capacities: 5 x 2 Mbps, 10 x 2 Mbps, 16 x 2 Mbps, 20 x 2 Mbps, 32 x 2 Mbps, 40 x 2 Mbps, 48 x 2 Mbps ,1 x 155 Mbps, 2 x 155 Mbps LAN: 10/100Base-T(X), 1000Base-SX/LX, 1000 Base-T Modulation: QPSK, 16/32/128QAM Common platform design (PDH, SDH, and LAN) V4 & Mx & PASO+(PDH) & PASO+(SDH) >> NEO (Same Equipment) Bitrate Free (PDH to SDH) 10MB/ 20MB/ 40MB/ 80MB/ 100MB/ STM-1 (Same MODEM Unit) Compact size/ Low power 1+0/1+1 @ 1U without FAN Various Application (E1+LAN), (E3+E1), (4PLAN + E1), (STM-1), APS for STM1(opt), XPIC etc. ..., Bandwidth and Modulation Free ODU Coverage from 5E1 to 2xSTM-1 or from 10M to 2x155Mbps. 7/4/12 5 Scalability up to your needs:

Antenna The complete menu of PASOLINK+ antennas includes diameters of 0.3m to 1.8m. They are designed to meet stringent requirements on mechanical rigidity. Antennas with diameters of 0.3m to 1.8m can be mounted directly to the ODU, making waveguides obsolete. This has relevant cost and reliability merits and makes the installation quicker and easier. The PASOLINK+ pole mounting structure is designed in a way that the ODU can be replaced while keeping the antenna and mounting bracket, including orientation, in place. The reflectors of the antennas are covered with white diffusive paint and the Transmitter-Receiver (ODU) mounting structure is hot-dip galvanized. In the 6 - 8 GHz band, The transmitter-receiver is with transducer is a STM-1 coaxial or waveguide cable designed to handleused for signal in 6-38 GHz bands. The equipment is designed to connecting between the ODU and IDU. withstand severe weather conditions. 32/128-Quadrature amplitude modulation (32/128 QAM) is applied. Local Oscillator is employed for APC (Automatic Phase Control) loop circuit at the transmitter and receiver.7/4/12 6

Type 1- 11-38 GHz 128 QAM/32 QAM type (0.3m Diameter Antenna)

MICROWAVE ANTENNA

Type 2- 6-8 GHz 128 QAM type (Low Loss Coaxial cable connection to Antenna)

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CONNECTION FROM ODU TO IDU

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OD U

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Indoor Unit (IDU) The IDU consists of six (6) panels that have following functions. 1. ODU INTFC Performing the multiplexing/demultiplexing of the transmitting signal, receiving signal, SV and EOW signal Compensating the signal loss depending on IF cable length Automatic Gain control 2. 32 QAM MODEM / 128 QAM MODEM 32/128 QAM (Quadrature Amplitude Modulation), Modulator/Demodulator Compensating quality degradation caused by fading Error correction of burst error using the Reed Solomon encoding/decoding MLC (Multi Level Code) encoding/decoding. (Only for 32-AM) Data streams conversion depending on the modulation scheme Scrambling/de-scrambling of the data RFCOH multiplexing/demultiplexing 7/4/12 10 Velocity conversion for radio frame

3. 150M INTFC / OPT INTFC / 10/100 BASET(X) INTFC (Selectable) STM-1 signal interface (150M INTFC / OPT INTFC) RSOH multiplexing/demultiplexing (150M INTFC / OPT INTFC) Hitless switching of No.1 and No.2 receiving signal (150M INTFC / OPT INTFC) 2 ports 10 BASE-T/100 BASE-TX INTFC (Each port traffic is separated) (10/100 Base-T(X)) Transparency for VLAN (IEEE 802.1Q Tagged frame) (10/100 Base-T(X)) 4. CTRL Setting of equipment operation Monitoring alarm status of the equipment Performing performance monitoring Providing upper rank NMS interface LCT terminal interface EOW interface 7/4/12

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IDU(a) 1+1 1U height with PDH+LAN interface

(b) 1+1 1U height with SDH interface

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DESIGN CONSIDERATIONS Protection Capability- PASOLINK+ provides a protection switching system of Hot standby protection (1 + 1), and twinpath protection (1 + 1). 1. Non-Protection System- Non-protection system consists of one ODU, one IDU for 1+0 System, and one antenna. 2. Hot-Standby System- Hot-Standby system consists of two ODUs, one IDU for 1 + 1 system, and one or two sets of antennas. The protection switch of this systems is performed by the TX switches on the ODUs at the transmitting end and Hitless switch on the 150 M INTFC (or OPT INTFC) module in the IDU at the receiving end. 3. Twin-path System- Twin-Path system consists of two ODUs, one IDU for 1 + 1 System, and two sets of antennas. The protection switch of this system is performed by the Hitless switch on the 150 M INTFC (or OPT INTFC) module in the IDU at the receiving end.7/4/12 13

MAIN FEATURES Advanced Technologies and SuperbPerformance High reliability and Quality Excellent field proven MTBF Low power consumption 10 Base-T/100 Base-TX, 1000 Base-SX/LX, 1000 Base-T (LAN interface) APS for STM-1 optical VLAN implementation E1 Line Digital Cross Connect (DXC) High System Gain / High spectrum efficiency High System Gain achieved by each modulation with Forward Error Correction (FEC) Technology and distortion cancelling technique called linearizer. High spectrum efficiency achieved by QPSK to 128 QAM selectable technology. Allowing smaller antennas and reducing system cost.7/4/12 14

MAIN FEATURES Easy and Quick Installation Interconnection : Only one coaxial cable and automatic equalization Very Compact and Light Various mounting methods for IDU, ODU and Antenna Easy Antenna direction adjustment Graphical User Interface for installation and monitoring Frequency Agility and Easy Tuning Field tunable local oscillator (Synthesizer) RF point frequency can be changed through Local Craft Terminal (LCT). Sub-band of type is changeable by replacing RF Filter.

System Flexibility Non-protected (1+0) or Protected (1+1) 1+1 Hot Standby / Space Diversity / Twin Path System with Hitless switch IDU is used commonly for 6 - 52 GHz Software settable Modulation (QPSK/16 7/4/12 QAM/32 15

Maintenance Facilities Local and remote supervision function on IDU through LCT or PNMTj Remote monitoring of ODU operating condition on IDU through PNMTj Full front access at IDU for all cabling and user interface Loop back facility -Near end baseband, Far end baseband IF loop back Pre-settable BER alarm point: 10-3, 10-4 or 10-5 (ext. alarm/AIS injection point). APS (Automatic Protection Switch) function (Option) APS realizes optical line protection for STM-1. This is simplified from conventional MSP (Multiplex Section Protection) function in order to fit RST mode equipment (ITUT G.841, Non-revertive Mode).

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XPIC (Cross Polarization Interference Canceller) PASOLINK NEO can improve its transmission capacity up to dual STM-1 in 28 MHz (27.5 MHz for 18 GHz band) bandwidth by using XPIC technology. In case of this capacity upgrading from one STM-1 system, the additional parts are dual polarized antenna, one more ODU/ IDU set, some XPIC cable kit and additional firmware. The upgrading can be realized with existing STM-1 equipment.

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Other Tools and Materials 1. LCT- Local Craft Terminal (LCT) is the simple provisioning and

maintenance terminal for PASOLINK+ system. LCT connects to the IDU. The LCT can contro all functions and measures all monitor levels. 2. PNMS - NEC can provide an Element Network Management tool (PNMS: PASOLINK Network Management System). These tools can be used for maintenance and performance monitoring. These tools consist of software for UNIX or WINDOWS NT OS.

3. Coaxial Cable (Interconnection between IDU and ODU)- The 5D-FB, 8D-FB, 10D-FB or 12D-FB coaxial cable (Low loss 50 ohms) serves as the interconnection between the transmitter-receiver (ODU) and baseband unit (IDU). The cable exchanges I/O data signals, 7/4/12 19 DC power, alarm signals, control signals for frequency and TX power, R

4. Power Supply Voltage- The nominal power supply voltage is 48 VDC. The guaranteed range of the same unit is sufficient for nominal voltage of 36 to 60 V (48 V) as well. In this way, commonality between modules is achieved throughout the network even if different DC voltages are applied at different locations. (24 VDC power supply is available as an option.) 5. PASOLINK MONITOR (OPTION)- PASOLINK MONITOR is used for receiving signal level monitor and ODU-IDU/ODU-ODU EOW system. This is an installation tool for antenna direction pointing. (Receiving level can be measured as voltage by voltmeter without PASOLINK MONITOR.) 6. Head set- Head set is used for EOW system.

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PANEL LIST

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COMPATIBILITY AMONG PASOLINK FAMILYTHE DIFFERENCE BETWEEN NEO & EXISTING EQUIPMENTS.

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IDU & ODU Compatibility

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Equipment Menu (PASOLINK NEO)

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INSTALLATION & INSTRUCTION

Before going to site check list : Before going to any site, please be sure you completely prepared the following items: 1- The installation tools. 2- The test equipment ,materials ,and tools.( for test work only) 3- Site installation drawings. 4- All labels/stickers (hard and soft copy) 5- Frequency plan and system configuration documents. 6- Test procedure and test data sheets .( for test work only) 7- Confirm access to site/station. 8- Check the condition of the vehicle to be used. 9- Make sure you and your staff are in good 7/4/12 conditions (physically)

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Installation Flow Chart

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IDU MountingThe installation procedure for the IDU is shown below. (a) Accessories Required- Screwdriver (b) Procedure for Mounting and Dismounting (1) Mounting- Mounting method of IDU is shown in Fig. 2-11. (2) Dismounting- For dismounting IDU (if necessary), use the following procedure. Step Procedure 1 Hold the IDU so that it does not drop, and remove two screws each from both sides. 2 Take out the IDU from the 19-inch rack. STEP1: Align the IDU to the mount position on the 19-inch rack. Step2: Fix each side of the IDU to the rack with the two screws(M5) Step3: To mount the IDU in a 19-inchrack ,allow space more than 200mm to the rear section and space for one unit to the top and bottom.7/4/12 35

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Mounting of ODU and ANT.:There are two different cases as follows: 1- The ODU is direct mounted to the antenna. 2- The ODU is mounted with a separate bracket. According to which case you have ,you will follow the assembling procedure included with each antenna And you will know how to fix that ODU. Note: In case two you have to install an additional RF cable between the ODU and the Antenna. The tools required: Wrench, Monkey wrench or Torque wrench , and suitable screwdriver. ODU Demounting (if necessary): 1- Remove the four fixed bolts from the ODU. 2- Then demount the ODU.

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Termination

Cable

In the following, list of tools and material and the method for cable termination are described. The following cables are described for reference. BNC connector D-sub connector N-P connector Molex M5557-4R connector Note: Use ISO standardized screw (mm unit) for D-SUB connector. The necessary tools and materials are 7/4/12 summarized as follow.

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Terminating Coaxial (Baseband Signal) Cable with BNC Connector

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Terminating Coaxial (Baseband Signal) Cable with BNC Connector

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Terminating Coaxial (IF Signal) Cables with N-P Connector:

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Terminating Coaxial (IF Signal) Cables with N-P Connector:

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Terminating Coaxial (IF Signal) Cables with N-P Connector:

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Cable and Terminal Connections During cables and terminal connections, refer to the following connecting method. (a) Connect baseband signal cable(s) Align the BNC connector guide groove to the other connector guide ridge and turn the connector cap clockwise fully until it is locked firmly. (b) Connect IF signal cable Connect the connector and tighten it by turning the tightening ring clockwise. (c) Connect supervisory cable(s) Take care to connect the D-sub connector the right way round and fix it with two screws (M3). (d) Connect power supply cable Take care to catch the Molex connector the right 7/4/12

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Antenna Alignment Pan the antenna by Multi-meter & LCT

OD U

+3.45 V

Multi-Meter RSSI or AGC Voltage

IF CABLE

RSSI/VAG C

1st Side Lobe

Azimuth Main beam

IDU

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Antenna Alignment (Horizontal)

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Antenna Alignment (Up and Down)Up and Down Misaligned

Reflecting Ground or Specular Plane7/4/12 47

THANK YOU FOR READING IT HAVE A GOOD DAY

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