Operation and Installation Manual TR7750 VE

8/17/2019 Operation and Installation Manual TR7750 VE

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Part no.: 84496, v. E


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Standards

The equipment to the following directives:

European Directive 552/2004 (SES) amended by 1265/2007 (8.33 kHz channel spacing)

European Directive 1999/5/EC (R&TTE)

The equipment is tested to the following product standards:

EMC: EN 301489-1, EN301489-22, IC RSS141 issue 1,

FCC part 15 and part 87

IEC 60950-1

Health and Safety: EN60950, CSA-C22.2 60950

Radio specifications: EN300676 (AM), EN301842-1 (VDL mode 2)

For an updated list of approvals and statements of conformity, these are available on:

www.jotron.com

http://www.jotron.com/http://www.jotron.com/http://www.jotron.com/


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List of abbreviations and definitions

100Base-T100Mbit/s physical Ethernet adapter to interface to twisted pair (copper wire) LAN. RJ45 connector is

used and range is 100m.

ACARS

Aircraft Communications Addressing and Reporting System(ACARS), is a digital data link system for

transmission of short, relatively simple messages between aircraft and ground stations via radio or

satellite.

AF

Audio frequency

Alarm

Refer to section 9.1

Alert

Refer to section 9.2

ARC MkII

Audio Remote Control unit (ARC MkII), is a Jotron manufactured remote unit for operating up to 1

channel in main/standby configuration (2 transceivers).

BITE

Built In Test Equipment

bps

Bits per second.

Cat5 Cable

Category 5 cable is a twisted pair high signal integrity cable type often referred to as Cat5 or Cat-5.

Most Category-5 cables are unshielded, relying on the twisted pair design for noise rejection.

Category 5 has been superseded by the Category 5e specification. This type of cable is used in

structured cabling for computer networks such as Ethernet and ATM, and is also used to carry many

other signals such as telephony and video.

CMS

Control and Management System, usually a IP-based network to monitor and control radios and

accessories

DRC

Data Remote Control unit, is a Jotron manufactured remote unit for changing frequency on the

radios that are connected to an ARC MkII (1channel). The DRC can set frequency and store/recall

preset frequencies.

DSP

Digital Signal Processor is a specialized microprocessor designed specifically for digital signalprocessing.


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E&M (4W E&M)

E&M is a type of supervisory line signalling that uses DC signals on separate leads, called the "E" lead

and "M" lead, traditionally used in the telecommunications industry between telephone switches.The “E” lead is normally used to signal PTT to the radio and the “M” lead is used to signal squelch

back to the voice control system.

A “4W E&M” consists of a total of 8 wires, 2W for audio in each direction, 2W for PTT signalling and

2W for squelch signalling.

ETSI

European Telecommunication Standardisation Institute

Ethernet

A family of standards for computer networking technologies for local area networks (LAN). The

standards cover physical connection, addressing and data transfer and are covered in IEEE 802.3.

ICAO

International Civil Aviation Organization

IEC

International Electro-technical Commission.

IETF

The Internet Engineering Task Force (IETF) develops and promotes Internet standards, cooperating

closely with the W3C and ISO/IEC standards bodies and dealing in particular with standards of the

TCP/IP and Internet protocol suite.

IF

In communications and electronic engineering, an intermediate frequency (IF) is a frequency to

which a carrier frequency is shifted as an intermediate step in transmission or reception. The

intermediate frequency is created by mixing the carrier signal with a local oscillator signal in a

process called heterodyning, resulting in a signal at the difference or beat frequency. Intermediate

frequencies are used in super heterodyne radio receivers, in which an incoming signal is shifted to an

IF for amplification before final detection is done.

IP

The Internet Protocol (IP) is the principal communications protocol used for relaying datagram

(packets) across and internetwork using the Internet Protocol Suite. Responsible for routing packets

across network boundaries, it is the primary protocol that establishes the Internet.

LAN

Local Area Network

MIB

Management Information Base is a virtual database used for managing the objects (parameters) in a

communications network. Most often associated with the Simple Network Management Protocol

(SNMP). The MIB database is hierarchical (tree-structured). The software that performs the

navigation in the MIB database is a MIB browser. The MIB database is Jotron proprietary and

contains descriptions and definitions for all parameters in the radio. The MIB database is updated

each time a new radio parameter is added or changed.


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MDF KRONE connector

KRONE LSA-PLUS (or simply KRONE) is an insulation-displacement connector for communication

signals. With a dedicated tool, connections can be made without soldering, screwing or insulationremoval. 1 KRONE connector holds 10 pair or 20 signal wires and bay be mounted on brackets for cross-wiring.

ORC

Operators Remote Control unit, is a Jotron manufactured remote unit used to recall preset

frequencies on the radios that are connected to an ARC MkII (1channel).

PA

Power Amplifier

PSU

Power Supply Unit. Separate unit to power the equipment.

PTT

Push To Talk

RACS

Remote access and control system for remote control and supervision of radio systems. The software

provides the user with full access to all monitoring and control parameters on all radios on all sites

connected via LAN.

RF

Radio Frequency

RSSIReceived Signal Strength Indicator is a measurement of the power present or level of a received radio

signal.

RTP

Real-time Transport Protocol defines a standardized packet format for delivering audio(VoIP) and

video over IP networks.

SDR

Software-Defined Radio is a system where components that traditionally have been implemented in

hardware (e.g. mixers, filters, amplifiers, modulators/demodulators, detectors, etc.) now are

implemented by means of software on an embedded computing devices, i.e. a Digital SignalProcessor (DSP).

SIP

Session Initiation Protocol is an IETF-defined signalling protocol, widely used for controlling

multimedia communication sessions such as voice and video calls over the Internet Protocol (IP). The

protocol can be used for creating, modifying and terminating two-party (unicast) or multiparty

(multicast) communication sessions consisting of one or several media streams.

S/N

SIGNAL- TO-NOISE RATIO


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SNMP

Simple Network Management Protocol is a UDP-based network protocol. It is used mostly in network

management systems to monitor and control network connected devices like the Jotron radios.SNMP is a component of the Internet Protocol Suite as defined by the Internet Engineering Task

Force (IETF). It consists of a set of standards for network management, including an application layer

protocol, a database schema, and a set of data objects.

SNMP exposes management data in the form of variables on the managed systems, which describe

the system configuration. These variables can then be queried (and sometimes set) by managing

applications like a MIB browser or the Jotron proprietary Radio Controller Client.

TCP

Transmission Control Protocol provides reliable, ordered delivery of a stream of bytes from a

program on one computer to another program on another computer or device supporting the

protocol.

TCXO

Temperature Compensated Crystal Oscillator.

UDP

User Datagram Protocol is one of the core members of the Internet Protocol Suite, the set of network

protocols used for the Internet. With UDP, computer applications can send messages, in this case

referred to as datagram’s, to other hosts on an Internet Protocol (IP) network without requiring prior

communications to set up special transmission channels or data paths.

VSWR

Voltage Standing Wave Ratio

VCO

Voltage-controlled oscillator is an electronic oscillator designed to be controlled in oscillation

frequency by a voltage input

VCS

Voice Communications System

VCCS

Voice Communication and Control System

VOGAD

Voice Operated Gain-Adjusting Device, is a type of automatic gain control for microphone/TX line

amplification. It is used in radio transmitters to ensure correct modulation and to prevent over

modulation.

VoIP

Voice over IP (VoIP) is a general term for a family of transmission technologies for delivery of voice

communications over IP networks such as the intranet/Internet or other packet-switched networks.


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VDL mode 2

The VHF Data Link or VHF Digital Link (VDL) is a means of sending information between aircraft and

ground stations. Aeronautical VHF data links use the band 117.975 - 137 MHz assigned by theInternational Telecommunication Union (ITU) to Aeronautical Mobile Route Services.

VDL Mode 2 is the only mode being implemented operationally to support Controller Pilot Data Link

Communications CPDLC. The physical (RF) link of the VDL mode 2 consist of radios that communicate

with a bit rate of 31500 b/s using differential 8 phase shift keying (D8PSK) modulation and carrier

sense multiple access (CSMA) as the access method to the RF link.

VME

VHF management entity is a control unit used in a VDL system to control the VDL radio during

transmission and reception of messages.


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Amendment Record

NO INIT DATE CHAPTERS VERSION REASON FOR CHANGE

1 OH 31.01.08 All A New layout and text

2 OH 16.09.08 AllB

New version, includes changes up to SW

release 2.05

New art number for the manual.

3 OH 11.11.08 2.1, 3.1.6, 3.2.5, 3.2.6,

3.2.7, 3.2.8, 3.3.5,

3.4.4, 3.4.5, 3.4.6

C

Information regarding frequency stability,

hardware key and protection of I/O lines added

4 OH 10.11.09 3.4.5 D beta Pin 8 Aux 2 is N/C

5 SHS/

OH

25.11.10 All E Major revision due to new manual standard.

Supports SW release up to RA: 3.0x, TA: 3.0x

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

The information in this book has been carefully checked and is believed to be accurate. However, no

responsibility is assumed for inaccuracies.

Jotron AS reserves the right to make changes without further notice to any products or modules

described herein to improve reliability, function or design. Jotron AS does not assume any liability

arising out of the application or use of the described product.


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SAFETY INSTRUCTIONS

This equipment contains CMOS integrated circuits. Observe handling precautions to avoid static

discharges which may damage these devices.

Some RF semiconductor devices used in this equipment may contain Beryllium Oxide. If inhaled, dust

from this oxide can be toxic. No danger will arise from normal handling but no attempt should be

made to tamper with these devices. On no account must these transistors be destroyed or discarded

with industrial or domestic waste, but should be returned to the manufacturer for subsequentdisposal or to a suitable destination facility that can safely handle the electronic waste.


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TABLE OF CONTENTS

AMENDMENT RECORD ............................................................................................................... VIII

SAFETY INSTRUCTIONS ................................................................................................................ IX

TABLE OF CONTENTS ...................................................................................................................... X

1 INTRODUCTION ....................................................................................................................... 1-1

1.1 DESIGN ................................................................................................................................... 1-1

1.2 MODELS COVERED BY THIS MANUAL ..................................................................................... 1-1

1.3 OPTIONS (MUST BE ORDERED SEPARATELY) .......................................................................... 1-2 1.4 LAYOUT OF THE TRANSCEIVER .............................................................................................. 1-2

1.5 APPLICATIONS ........................................................................................................................ 1-2

2 TECHNICAL SPECIFICATIONS ............................................................................................ 2-1

2.1 GENERAL SPECIFICATION, TR-7750 ....................................................................................... 2-1 2.2 TRANSMITTER U NITS, TA-7650, TA-7625, TA-7610 ............................................................ 2-2 2.3 POWER SUPPLY U NIT, PSU-7002 ........................................................................................... 2-2

2.4 R ECEIVER U NIT, RA-7203 ..................................................................................................... 2-3

3 FUNCTIONAL DESCRIPTION ............................................................................................... 3-1

3.1 FRONT PANEL CONTROLS, TRANSMITTER UNIT .................................................................... 3-1 3.1.1 Display ............................................................................................................................ 3-1

3.1.2 Scroll/Select switch and Navigation buttons A, B and C ................................................ 3-1

3.1.3 PTT button ...................................................................................................................... 3-1

3.1.4 ON/OFF button ............................................................................................................... 3-2

3.1.5 LED Indicators -TX ........................................................................................................ 3-2

3.1.6 Mic/Headset connector - TX ........................................................................................... 3-3

3.2 TRANSMITTER , REAR CONNECTIONS ...................................................................................... 3-4 3.2.1 Antenna connector (50 ohm N-type) ............................................................................... 3-4

3.2.2 Receiver ant. Connector (50 ohm BNC) ......................................................................... 3-4

3.2.3 DC input connector (Amphenol MS 3106A 10SL4S)(Jotron P/N: 96715) ..................... 3-4

3.2.4 I/O signals – general information ................................................................................... 3-5

3.2.5 LAN connector - TX (RJ45) ............................................................................................ 3-5

3.2.6 AUX1 CONNECTOR - TX (RJ45) .................................................................................. 3-6

3.2.7 AUX2 connector - TX (RJ45) .......................................................................................... 3-6

3.2.8 REM connector - TX (RJ45) ........................................................................................... 3-7

3.2.9 Rx connector - TX (RJ45) ............................................................................................... 3-8

3.3 FRONT PANEL CONTROLS, R ECEIVER UNIT ........................................................................... 3-9 3.3.1 Display - RX .................................................................................................................... 3-9

3.3.2 Scroll/Select switch and Navigation buttons A, B and C - RX ........................................ 3-9

3.3.3 ON/OFF button - RX ...................................................................................................... 3-9

3.3.4 LED Indicators -RX ...................................................................................................... 3-10

3.3.5 Headset connector - RX ................................................................................................ 3-10

3.4 R ECEIVER , REAR CONNECTIONS ........................................................................................... 3-11 3.4.1 Antenna connector - RX (50 ohm N-type) ..................................................................... 3-11

3.4.2 DC input connector - RX (Amphenol MS 3106A 10SL4S)(Jotron P/N: 96715) ........... 3-11

3.4.3 AC Input connector - RX (IEC 60320 - C14) ................................................................ 3-12

3.4.4 LAN connector - RX (RJ45) .......................................................................................... 3-12

3.4.5 AUX1 CONNECTOR- RX (RJ45) ................................................................................. 3-13

3.4.6 AUX2 connector - RX (RJ45)........................................................................................ 3-13 3.4.7 REM connector - RX (RJ45) ......................................................................................... 3-14


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3.5 PSU-7002, POWER SUPPLY U NIT, FRONT-VIEW .................................................................. 3-15 3.5.1 LED Indicators - PSU ................................................................................................... 3-15

3.6 POWER SUPPLY U NIT REAR CONNECTORS. .......................................................................... 3-16 3.6.1 DC input connector – PSU (Amphenol MS 3106A 10SL4S)(Jotron P/N: 96715) ........ 3-16

3.6.2 D C output connector – PSU (Amphenol MS 3106A 12S3P)(Jotron P/N: 93697) ....... 3-16

3.6.3 AC Input connector - PSU (IEC 60320 - C14) ............................................................. 3-17

4 INSTALLATION ........................................................................................................................ 4-1

4.1 I NTRODUCTION ....................................................................................................................... 4-1

4.2 I NITIAL INSPECTION ............................................................................................................... 4-1 4.3 I NSTALLATION INTO EQUIPMENT CABINET ............................................................................ 4-2

4.4 A NTENNA CONNECTORS ......................................................................................................... 4-3 4.5 AC AND DC CONNECTORS ..................................................................................................... 4-3

4.6 R EMOTE SIGNALS ................................................................................................................... 4-4

4.6.1 Transceiver cable – Transceiver operation .................................................................... 4-4 4.6.1.1 Transceiver cable- pin out ....................................................................................... 4-5

4.6.1.2 Menu parameters, transmitter - receiver interconnection ........................................ 4-6 4.6.2 Audio in/out and Line loop keying .................................................................................. 4-7

4.6.2.1 Menu parameters, Monitor output ........................................................................... 4-7

4.6.2.2 Menu parameters, Line input -TX ........................................................................... 4-8 4.6.2.3 Menu parameters, Line output - RX ........................................................................ 4-8

4.6.3 Other key signals ............................................................................................................ 4-9

4.6.3.1 Menu parameters, Key source -transmitter .............................................................. 4-9 4.6.4 Squelch and AGC signals, receiver unit ....................................................................... 4-10

4.6.4.1 Menu parameters, Squelch output -receiver .......................................................... 4-11 4.6.5 Alarm and Select signals, transmitter and receiver ...................................................... 4-12

4.6.5.1 Menu parameters, Alarm and Select -Receiver ..................................................... 4-13 4.6.6 RX BUSY, KEY OUT and TX LOW POWER (GAS ALARM) – (Transmitter unit) ....... 4-14

4.6.6.1 Menu parameters, RX BUSY, KEY OUT and TX LOW POWER (GAS ALARM) 4-15

4.7 APPLICATIONS ...................................................................................................................... 4-16 4.7.1 Transceiver, Local operation ........................................................................................ 4-16

4.7.1.1 Setup procedure ..................................................................................................... 4-16 4.7.2 Transceiver, 2 wire remote ........................................................................................... 4-16

4.7.2.1 Setup procedure ..................................................................................................... 4-17 4.7.3 Transceiver, 4 wire remote ........................................................................................... 4-17

4.7.3.1 Setup procedure ..................................................................................................... 4-18 4.7.4 Transmitter, Main/Standby ........................................................................................... 4-19

4.7.4.1 Setup procedure ..................................................................................................... 4-20 4.7.5 Receiver, Main/Standby ................................................................................................ 4-21

4.7.5.1 Setup procedure ..................................................................................................... 4-21 4.7.6 AM data operation (ACARS) – Option: AM MSK ........................................................ 4-22

4.7.7 VDL mode 2 data operation (part of a VDL Ground Station) ...................................... 4-22

4.7.7.1 Setup procedure: Transceiver, VDL mode 2 operation ........................................ 4-23 4.7.7.2 Menu parameters: Transmitter, VDL mode 2, Config. menu................................ 4-24

4.7.7.3 Menu parameters: Transmitter, VDL mode 2, Interface menu ............................. 4-24

4.7.7.4 Menu parameters: Receiver, VDL mode 2, Config. menu .................................... 4-25 4.7.7.5 Menu parameters: Receiver, VDL mode 2, Interface menu .................................. 4-25

5 REMOTE SYSTEMS USING IP ............................................................................................. 5-26

5.1 I NTRODUCTION ..................................................................................................................... 5-26 5.1.1 SNMP (Simple Network Management Protocol) .......................................................... 5-26


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5.1.2 RTP (Real Time Protocol) ............................................................................................ 5-27

5.1.3 SIP (Session Initialization Protocol) ............................................................................ 5-27

5.1.4 HTTP (Hypertext Transfer Protocol) ........................................................................... 5-27

5.1.5 Remote control protocol using TCP ............................................................................. 5-27

5.1.6 VDL mode 2 protocol using TCP .................................................................................. 5-27

5.1.7 DHCP (Dynamic Host Configuration Protocol) ......................................................... 5-27

5.2 APPLICATIONS USING THE IP INTERFACE ............................................................................. 5-28 5.2.1 Introduction – IP Configuration and planning ............................................................. 5-28

5.2.2 Controlling a transceiver using a Radio Remote Control (RRC) ................................. 5-28

5.2.3 IP configuration plan .................................................................................................... 5-29

5.2.3.1 VoIP system with separate antennas for main and standby ................................... 5-30 5.2.3.2 Setup procedure, VoIP using RRC (RTP and SIP) ............................................... 5-30

5.2.4 Remote Access and Control System over LAN (RACS). ............................................... 5-31

5.2.4.1 System layout ........................................................................................................ 5-31

5.2.4.2 Setup procedure ..................................................................................................... 5-32 6 ADAPTOR KIT ......................................................................................................................... 5-33

6.1 MAIN DISTRIBUTION FRAME (MDF K RONE) ....................................................................... 5-33 6.1.1 Transmitter standard wiring ......................................................................................... 5-34

Receiver standard wiring ............................................................................................................ 5-35

6.1.2 Transceiver wiring, Main/Standby, 4Wire E&M, ARC, DRC/ORC and ACU ............. 5-36

6.1.2.1 System layout ARC, DRC with two antennas (main and standby) ....................... 5-37 6.1.2.2 System layout ARC, DRC/ORC with one antenna + ACU ................................... 5-37

6.1.2.3 Detailed wiring diagram ARC, DRC/ORC + ACU using MDF Krone ................ 5-38

6.1.2.4 Setup procedure – Control using ARC, DRC/ORC, ACU .................................... 5-39 6.1.3 Transceiver wiring, Main/Standby, 4Wire E&M, VCCS and ACU .............................. 5-40

6.1.3.1 System layout ........................................................................................................ 5-40 Detailed wiring diagram transceiver + ACU using MDF Krone ............................................. 5-41

6.1.3.2 Setup procedure, main/standby transceiver connected to an ACU + VCCS ......... 5-42 6.1.4 Transceiver, Main / Standby, 4Wire +E&M, APM, ARC and DRC ............................. 5-43

6.1.4.1 System Layout ....................................................................................................... 5-44

6.1.4.1 Detailed wiring diagram transceiver + APM using MDF Krone .......................... 5-44 6.1.4.2 Setup procedure ..................................................................................................... 5-45

6.2 LEGACY WIRING ADAPTOR BOARD – P/N 82715 (OPTIONAL) .............................................. 5-46 6.2.1 Configuration of the interface board ............................................................................ 5-46

6.2.2 Radio Configuration ..................................................................................................... 5-47

6.2.3 Limitations .................................................................................................................... 5-47

6.2.3.1 Receiver: ................................................................................................................ 5-47

7 ADVANCED RADIO FUNCTIONS AND RECOMMENDED SETTINGS ......................... 6-1

7.1 I NTRODUCTION ....................................................................................................................... 6-1

7.2 TRANSMITTER ........................................................................................................................ 6-1 7.2.1 VOGAD function and use -TX ........................................................................................ 6-1

7.2.2 Line mute level ................................................................................................................ 6-2

7.2.3 Frequency Offset (Option) .............................................................................................. 6-2

7.2.4 In-band PTT signalling (Option in-band) ....................................................................... 6-2

7.3 R ECEIVER ............................................................................................................................... 6-3 7.3.1 Squelch system ................................................................................................................ 6-3

7.3.1.1 Squelch: Recommended settings ............................................................................. 6-3

7.3.1.2 Details regarding the squelch system to use ............................................................ 6-4 7.3.1.3 Details regarding the functionality of the Signal/Noise (S/N) Squelch ................... 6-4 7.3.1.4 Details regarding the Level squelch (Carrier override) .......................................... 6-5


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7.3.2 In-band Squelch signalling (Option) .............................................................................. 6-6

8 OPERATING INSTRUCTIONS ............................................................................................... 7-1

8.1 I NTRODUCTION ....................................................................................................................... 7-1

8.2 TRANSMITTER ........................................................................................................................ 7-3 8.2.1 User menu – Transmitter (Restricted access level) ........................................................ 7-3

8.2.2 User menu – Transmitter (Default access level) ............................................................ 7-4

8.2.3 Settings, information and configuration menus – Transmitter ....................................... 7-5

8.2.3.1 Radio control group - TX ........................................................................................ 7-6

8.2.3.2 TX config group - TX.............................................................................................. 7-7 8.2.3.3 Interface config group - TX ..................................................................................... 7-8

8.2.3.4 Bite system group - TX ........................................................................................... 7-9 8.2.3.5 System info group - TX ........................................................................................... 7-9

8.2.4 Parameter details – Transmitter ................................................................................... 7-10

8.2.4.1 Radio control group - TX ...................................................................................... 7-10 8.2.4.2 TX config group - TX............................................................................................ 7-11

8.2.4.3 Interface config group - TX ................................................................................... 7-14 8.2.4.4 Bite system group - TX ......................................................................................... 7-17 8.2.4.5 System info group -TX .......................................................................................... 7-17

8.3 R ECEIVER ............................................................................................................................. 7-19 8.3.1 User menu – receiver (Restricted access level) ............................................................ 7-19

8.3.2 User menu – Receiver (Default access level) ............................................................... 7-20

8.3.3 Settings, information and configuration menus – Receiver .......................................... 7-21

8.3.3.1 Radio control group - RX ...................................................................................... 7-22

8.3.3.2 RX config group - RX ........................................................................................... 7-23

8.3.3.3 Interface config group - RX .................................................................................. 7-24

8.3.3.4 Bite system group - RX ......................................................................................... 7-25 8.3.3.5 System info group - RX ......................................................................................... 7-25

8.3.4 Parameter details – Receiver ........................................................................................ 7-26

8.3.4.1 Radio control group - RX ...................................................................................... 7-26

8.3.4.2 RX config group - RX ........................................................................................... 7-27

8.3.4.3 Interface config group - RX .................................................................................. 7-30 8.3.4.4 Bite system group - RX ......................................................................................... 7-32

8.3.4.5 System info group - RX ......................................................................................... 7-34

9 FAILURES AND CORRECTIVE ACTIONS ........................................................................ 8-35

9.1 ALARMS ............................................................................................................................... 8-35

9.2 ALERTS ................................................................................................................................. 8-35

9.3 SYSTEM COMPONENTS ......................................................................................................... 8-35 9.4 TRANSMITTER ERROR CONDITIONS ...................................................................................... 8-35 9.5 R ECEIVER ERROR CONDITIONS ............................................................................................. 8-40

10 MAINTENANCE..................................................................................................................... 9-1

10.1 PREVENTIVE MAINTENANCE .............................................................................................. 9-1

10.2 PC UTILITIES ....................................................................................................................... 9-1 10.2.1 Radio Controller client ................................................................................................... 9-1

10.2.2 MIB-browser ................................................................................................................... 9-2

10.2.3 IP-Ping ............................................................................................................................ 9-2


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11 DIMENSION AND WEIGHT .............................................................................................. 10-1

11.1 TRANSMITTER UNIT .......................................................................................................... 10-1 11.2 POWER SUPPLY ................................................................................................................. 10-2

11.3 R ECEIVER U NIT ................................................................................................................ 10-3 11.4 TRANSCEIVER (SUB RACK ) ............................................................................................... 10-4

11.5 PACKAGING ...................................................................................................................... 10-4

12 SUPPORTING DOCUMENTS ............................................................................................ 11-5


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1 Introduction

1.1 DesignThe Jotron Receiver and Transmitter are “State of the art” fully solid state design based on a

Software-Defined Radio (SDR) concept with a Digital Signal Processor (DSP) as the core element. The

DSP provide all signal handling between the IF signal format and the analogue audio signals and vice

versa. This includes filtering, de-modulation, modulation signal leveling and more. The processor also

handles all the control signaling within the RA and TA units, and externally. The units are fully

software defined and easily upgradable with improved or new functionality. The units can be

controlled either locally or remotely via several communication protocols including Ethernet (LAN).

The RF frequencies are synthesizer controlled.

1.2 Models covered by this manualThe following models / variants are covered by this operator’s manual

Model P/N Contain units Output Frequency range Modes

TR-7750, Transceiver

(VHF)

X-84700 RA-7203, TA-7650,

PSU-7002

50 Watts 118-137 (156)

MHz

AM, (D8PSK)


(VHF)

X-84700 RA-7203, TA-7625,

PSU-7002

25 Watts 118-137 (156)

MHz

AM, (D8PSK)


(VHF)

X-84700 RA-7203, TA-7610,

PSU-7002

10 Watts 118-137 (156)

MHz

AM, (D8PSK)

TA-7650, Transmitter

(VHF)

X-84000 TA-7650, PSU-

7002

50 Watts 118-137 (156)

MHz

AM, (D8PSK)


(VHF)

X-84000 TA-7625, PSU-

7002

25 Watts 118-137 (156)

MHz

AM, (D8PSK)


(VHF)

X-84000 TA-7610, PSU-

7002

10 Watts 118-137 (156)

MHz

AM, (D8PSK)

RA-7203, Receiver

(VHF)

X-84500 RA-7203 N/A 118-137 (156)

MHz

AM, (D8PSK)

Table 1-1, Radio models

Throughout this manual, transmitter unit, TX, TA-7650 or TA-76xx refers to any of the three different

power variants of the transmitter (TA-7650, TA-7625 or TA-7610) unless otherwise noted. The term

transceiver, TR, TR-7750 or TR-77xx refers to any variant of the transceiver unless specifically noted

in the text, and the term receiver, RX and RA-7203 is used for the receiver unit (RA-7203).

The operating procedures for the different RX/TX models are equal, except the maximum rated

output power.


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P/N: 84496 (v.E)

1.3 Options (must be ordered separately)

Optionally the Transmitter can

include the following functionality, depending on configuration.

Optional functions Description

Extended freq. 118-

144 MHz

Extended operating frequency to 144 MHz (Option 144 MHz)

Extended freq. 118-

156 MHz

Extended operating frequency to 156 MHz (Option 156 MHz)

Carrier Offset CLIMAX offset of the transmitter frequency (ICAO standard) (Option offset)

In-band signalling Audio line tone keying of the transmitter and/or squelch signalling from the

receiver. (Option In-band)

VoIP Voice over IP audio and keying (Option VoIP)FM modulation Frequency modulation (Option FM)

AM MSK ACARS data link standard (Option AMMSK)

VDL mode 2 The transceiver implements the media access control (MAC) and physical

layer of the VDL mode 2 network. Communication to the VME is done using

TCP/IP. (Option VDL 2)

1.4 Layout of the transceiver

The receiver unit, RA-7203 operates as an independent receiver. The transmitter unit TA-7650

operates as an independent transmitter, but requires the power supply unit, PSU-7002 for operation

on AC power. The receiver and transmitter units may be placed in entirely different locations or

together and may also be configured as a transceiver with local operation from the front panel.

Figure 1.1, Complete Transceiver, RA-7203, TA-7650 and PSU-7002

1.5 ApplicationsThe transmitter TA-7650 and the receiver RA-7203 can be used either as a standalone transmitter /

receiver for ground to air voice or data communication, or combined as a transceiver with RX muting

and common audio control via the interface of the Transmitter unit.

The transmitter / receiver can be operated in the following modes:

•

Locally as a Transceiver, with microphone and headphone connected to the front panel

connector.


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P/N: 84496 (v.E)

• As a Transceiver, connected to a VCS (Voice Control System) using 600-ohm analogue linesfor audio, together with keying in form of in-band tones, external voltages, ground or

phantom keying.

• As a Transceiver, connected to a VCS (Voice Control System) using Ethernet (LAN/WAN) forVoIP audio and keying.

• Connected to a VME (VHF ground station) system as a data modem, using VDL mode 2.

• Connected to a VDL (VHF ground station) system using 600-ohm analogue lines for audiocontaining AM-MSK data from an external ACARS modem.

• In addition the transmitter/receiver has a large range of options for remote control using

Ethernet, serial lines or front panel controls.


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Jotron AS| TR7750: Operators handbook 1BTechnical SPECIFICATIONS Page 2-1

P/N: 84496 (v.E)

2 Technical SPECIFICATIONS

2.1 General specification, TR-7750

Applicable Standards

AM, AM-MSK ICAO annex 10, ETSI EN 300676

VDL mode 2 ETSI EN-301841 - 1

Voice over IP EUROCAE ED-137 (RTP / SIP)

EMC ETSI EN-301489 part 1/22, FCC rule 15B and 87, IC RSS-141

Shock Transport: IEC-721-3-2, Class 2M3

Vibration Transport: IEC-68-2-32, Class 2M3. IEC-68-2-6

General, all units AM 25 kHz AM 8.33 kHz AM MSK D8PSK (VDL2)

Frequency range 118-137 MHz (118-144MHz or 118-156 MHz optional)

Frequency accuracy (stability) < ±1.0 ppm@ -20°C to +55 °C,


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P/N: 84496 (v.E)

2.2 Transmitter Units, TA-7650, TA-7625, TA-7610Transmitter unit AM 25 kHz AM 8.33 kHz AM MSK D8PSK (VDL2)

Output power Minimum 1W, Maximum 50, 25 or 10W, model dependent. Adjustable in 0.1 dB step. Max 25W

Adjacent channel power >75 dBc >65 dBc >75 dBc >65 dBc

Modulation level up to 95%

Distortion < 5% @95% modulation

Line input 600Ω, -40 to +10dBm – adjustable sensitivity

Monitor line output 600Ω, -46 to 0dBm (Depending on input level. Relative to RX in and TX monitor level)

AGC (VOGAD) range -40 to +10 dBm on line input, threshold level is adjustable

Intermodulation protection >40 dB

Harmonic emission ≤ -90 dBc (-43 dBm @ 50W output)

Spurious emission ≤ -110 dBc (-63 dBm @ 50W output)

Keying Time Attack time:


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P/N: 84496 (v.E)

2.4 Receiver Unit, RA-7203

Receiver unit AM 25 kHz AM 8.33 kHz AM MSK D8PSK (VDL2)

Sensitivity, AM@1µV/30% pd 12dB SINAD (CCITT)

Sensitivity VDL (BER>10-3

) < -103 dBm

Adjacent channel rejection

(Adjacent channel selectivity) >75dB >65dB >75dB >[email protected]

Intermodulation attenuation >79 dBc >-28 dBm

IF bandwidth +/- 11kHz +/- 3.5 kHz +/- 11 kHz +/- 11 kHz

Image frequency rejection >110 dB

IF frequency rejection >110 dB

Squelch system Combination of RF level and Signal/Noise (digital coherent squelch)

Squelch RF level -5 dBµV to +42 dBµV (-112 dBm to -65 dBm)

Squelch Signal/Noise 5 dB S/N to 20dB S/N @30% modulation

Squelch activation time


21/140

Jotron AS| TR7750: Operators handbook 2BFunctional description Page 3-1

P/N: 84496 (v.E)

3 Functional description

3.1 Front Panel Controls, Transmitter unit

Navigation

button ADisplay

Navigation

button B

Indicators:

OUT: Output power indicator

SWR: High SWR indicator

PTT button

Scroll / Select

Switch

ON/OFF

button

Navigation

button C

Indicators:

LOW: Transmits in low power

AL : Alarm active (red)

REM: Remote ready (green)

STBY: Standby (yellow)

Mic/Headset

connector

Figure 3-1, Front view, transmitter unit, TA-7650/25/10

3.1.1 DisplayThe default display shows the most important operational parameters; Frequency and modulation. In

addition, the display will show several menus, submenus and operational parameters when entering

into the menu using Navigation button A.

3.1.2 Scroll/Select switch and Navigation buttons A, B and CThe navigation buttons, A, B and C, together with the Scroll/Select switch are used to navigate

through the menus.

The Scroll/Select switch has three actions: It can be turned clockwise, counter-clockwise, or

momentarily pressed.In general the use of the navigation buttons are:

A or Scroll/Select right: Increase a value (up)

B or Scroll/Select left: Decrease a value (down)

C or Scroll/Select press: Confirm or Enter.

The function of the navigation buttons will change depending on previous actions. The display will

indicate the function of each navigation button, by text or symbols.

3.1.3 PTT buttonThis button is used to immediately key the transmitter for test/measurement purposes. The PTT

button is connected in parallel with the PTT keying available via the microphone connector.

The PTT button may be enabled/disabled depending on the key configuration of the radio.


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P/N: 84496 (v.E)

3.1.4 ON/OFF buttonPress and hold button (for app. 2s) to switch the unit ON or OFF.

3.1.5 LED Indicators -TXLOW (yellow): The transmitter transmits in low power, either caused by an internal failure

(SWR, Temperature, or low input voltage) or set by the user. The low power

level is adjustable.

AL (red): Indicates that an alarm is present in the transmitter unit. Details of the alarm

will be shown on the display.

REM (green): This LED has multiple functions. The REMOTE indicator will be lit with a

constant green colour when the transmitter is “ready” for remote operation.

Ready means that the keying options has been set to include keying from anexternal source, and that the voice input has been set to an external source

(600 ohm line input) or VoIP.

In addition the REMOTE indicator will flash yellow each time the unit is

communicating on either of the remote interfaces (RS232, RS485, Ethernet).

STBY (yellow): The transmitter is kept in standby, either by user input, an external signal to

the remote interface or because an alarm condition has been detected, and

the transmitter is set up as a MAIN transmitter. In standby the transmitter

will not be able to send, even if a valid key signal is input to the unit.

OUT (yellow): Indicate that the transmitter is keyed and power is being generated, detectedat the output of the power amplifier.

SWR (red): Indicate that the SWR on the antenna is above the threshold value (app. 3:1).

The transmitter will reduce the output power to the predefined low power

level in order to protect the output stage.


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P/N: 84496 (v.E)

3.1.6 Mic/Headset connector - TX

Table 3-1, Mic/Headset connector, transmitter, pin out

The Mic/Headset connector is used for multiple purposes.

• Microphone/Headset connector:Connect the microphone to the Mic input/Mic GND, the +12VDC can be used to power the

microphone or a microphone amplifier.

The Headset output (referenced to GND) contains the local side tone generated from thedemodulated signal on the output of the transmitter when the transmitter is keyed, or the

received audio if the transmitter is connected to a receiver using the T/R bus available on the

rear panels.

• RS232 serial lineThe RS232 serial line can be used to control radio parameters from an external unit.

• Hardware key to change access level:In order to change the access level (see chapter 8.2.4.3 for details) a

hardware key must be inserted into the microphone/headset

connector before entering in to the menu system. The hardware keyconsists of a RJ45 connector where pin no. 4 and 5 (RS232 RX and TX)

are connected together.

Mic/Headset connector

Name PIN Purpose

Mic input 1 Sensitivity 2.5mV nominal.

Mic GND 2 Microphone ground

Headset 3Headset output, contains side-tone and/or received

audio when used together with a receiver (RA7203)

RS232 4 RS232 TX

RS232 5 RS232 RX

PTT 6 PTT input. Connect to GND (p.8) to key

+12VDC 7

Source is 12 VDC with a 3.2k ohm internal

resistance. Maximum current consumption of theexternal mic is 3 mA.

GND 8 Common ground


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P/N: 84496 (v.E)

3.2 Transmitter, rear connections

Figure 3-2, Rear view, transmitter unit, TA-7650/25/10.

3.2.1 Antenna connector (50 ohm N-type)

Interface to the antenna cable for the transmitter or the transceiver when used together with a

receiver unit

3.2.2 Receiver ant. Connector (50 ohm BNC)BNC-Type antenna output – 50 ohm. This connecor is connected to the antenna switch (pin switch or

relay) internally in the transmitter unit and can be connected directly to the antenna input of a co-

located receiver unit (RA7203).

Note!

The VHF radio uses a PIN switch, this type of antenna switch can only be used to switch the

antenna between a receiver and a transmitter. The output from standby transmitter can not be

switched through this antenna switch. For this application a separate Antenna Changeover Unit(ACU) is required.

3.2.3 DC input connector (Amphenol MS 3106A 10SL4S)(Jotron P/N: 96715)

Figure 3-3, Transmitter DC input connector, rear view

Connector for DC supply (21.6 - 31.2 VDC).

Connected to the power supply, PSU-7002, or to an external DC supply.

A is the positive (+) connection and B is the negative (-) connection points.


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P/N: 84496 (v.E)

3.2.4 I/O signals – general informationMany of the I/O signals on the radio units are polarity dependent. The relays used are semiconductor

type relays. Optocouplers are used when practically possible to isolate the radio equipment from

external equipment. This prevents failures caused by varying ground conditions to influence the safe

operation of the equipment.

The convention used throughout this book is to add a “P” after the positive side of the signal and an

“N” after the negative.

All input and output signals are overvoltage protected by PTC resistor and will not be damaged for

input signals up to +/- 48V.

Wherever possible the standard pairs used on an ethernet connection are used for the signals. This

allows standard ethernet Cat5e or better cables to be used as patch cables with the advantage of

getting the signals as twisted pairs within the cable. The standard pairs on a Cat5e cable are found

on: Pin 1/2, 3/6, 4/5 and 7/8.

3.2.5 LAN connector - TX (RJ45)This connector contains the Ethernet bus and is normally connected to a switch/hub. It can also be

connected directly to a computer, using a twisted pair Ethernet cable. The pin-out of the connector is

the standard pin-out used in most IP networks.

LAN interface connector

Name PIN Purpose

LAN_TXP 1 Tx data

LAN_TXN 2 Tx data

LAN_RXP 3 Rx data

LAN_RXN 6 Rx dataLAN_D3P 4 Optional

LAN_D3N 5 Optional

LAN_D4P 7 Optional

LAN_D4N 8 Optional

Table 3-2, LAN interface connector, pin out


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P/N: 84496 (v.E)

3.2.6 AUX1 CONNECTOR - TX (RJ45)This connector is normally connected to equipment used for remote control /remote supervision of

the transmitter.

AUX1 connector, transmitter AUX

Name PIN Purpose Dir Level Max

Volt.

[V]

Max

Curr

[mA]

ALARM_P 1 Alarm out-relay (NO) O48 120

ALARM_N 2 Alarm out-relay (NO) O

Select_in_P 3 Select in, Optocouplers input I48 32

Select_in_N 6 Select in, Optocouplers input I

RS232_S 4 RS232 Transmit data I/O ± 12

RS232_R 5 RS232 Receive data I/O ± 12+12V 7 +12VDC output to external

equipment

O12V 300

GND 8 Common ground N/A

Table 3-3, AUX1 connector, transmitter, pin out

3.2.7 AUX2 connector - TX (RJ45)This connector is normally connected to equipment used for remote control / remote supervision of

the transmitter.

AUX2 connector, transmitter


Volt.

[V]

Max

Curr

[mA]

KEY_OUT_P 1 Closed=Transmitting,

optocoupler output

O

15 50KEY_OUT_N 2 Closed=Transmitting,

optocoupler output

O

MONITOR_P 3 Monitor output to tape

recorder

O-46 to

0

dBm

15VppMONITOR_N 6 Monitor output to tape

recorder

O

TXLOW_P 4 Applying a voltage > 5VDCbetween pin 4 and 5 forces the

transmitter into low power

I +5 to+48V

ref p5± 50

TXLOW_N 5 Applying a voltage > 5VDC

between pin 4 and 5 forces the

transmitter into low power

I -5 to

-48V

ref p4

TXKEY_P 7 Applying a voltage > 5VDC

between pin 7 and 8 will key

the transmitter

I +5 to

+48V

ref p8± 50

TXKEY_N 8 Applying a voltage > 5VDC

between pin 7 and 8 will key

the transmitter

I -5 to

-48V

ref p7Table 3-4, AUX2 connector, transmitter, pin out


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P/N: 84496 (v.E)

3.2.8 REM connector - TX (RJ45)This connector is normally connected to equipment used for remote control / remote supervision of

the transmitter. It contains basic interfacing signals used for remote control, and will in many cases

be the only connector used.

When the Transmitter is connected together with a Receiver, using a standard Cat5E Transceiver

patch cable between the units (RX: REM to TX: RX connector), the Transmitter REM connector will

contain the basic functionality to control both the transmitter and the receiver.

With this cable installed, the receiver line output will be connected to the transmitter line input to

give a 2W interface to the transceiver. In addition there will be a squelch output signal available on

the transmitter REM connector.

REM connector, transmitter – Remote control of the transceiver


Volt.

[V]

Max

Curr

[mA]

RS485_Z 1 RS485 (-) I/O ±5V

RS485_Y 2 RS485(+) I/O ±5V

LINE_P 3 Balanced line input/output to

TA/RA, 600 ohm I/O

-40 to

+10

dBm ± 48

(Key

input)

LINE_N 6 Balanced line input/output to

TA/RA, 600 ohm.

(For unbalanced line input:

Connect to GND, p8)

I/O

-40 to

+10dBm

TX_KEY_G 4 Grounding this pin will key

transmitterI GND 5

RX_BUSY_OUT 5 RX Busy indicator output –

Open collector

(squelch indicator)

O 15 10

ALARM 7 Low=Alarm (TA or TA/RA) O 15 50

GND 8 Common ground -

Table 3-5, REM connector, transmitter, pin out


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P/N: 84496 (v.E)

3.2.9 Rx connector - TX (RJ45)This connector is normally connected to the REM connector on a co-located receiver when operated

as a transceiver.

When connected to a receiver, it will make functionality such as:

• Common Rx/Tx 2 wire remote audio line interface

• Receiver audio in the local headset interface on the transmitter unit

• Rx & Tx audio on the Tx monitor output

• Transceiver alarm signalling

• Receiver squelch information in the transmitter to be used on the transmitter interface orwhen operated as a VDL mode 2 radio

Rx connector, transmitter. Interface to RX (transceiver config)


Volt.

[V]

Max

Curr

[mA]

RS485_Z 1 RS485 (-) I/O±5V

RS485_Y 2 RS485(+) I/O

LINE_P 3 Balanced line input from

Receiver unit, 600 ohmI -40 to

+10

dBm

± 48VLINE_N 6 Balanced line input from

Receiver unit, 600 ohmI

TX_BUSY 4 TX Busy indicator output -

Open collector

(Mute output)

O 5 10

RX_BUSY 5 RX Busy optocoupler-input

(Repeater key input)I 48 32

INT_ALARM 7 This internal alarm signal is a

combined I/O signal that is

connected to a co-located

receiver for receiving alarm

signalling from the receiver (for

display on the transmitter and

to signal alarm from the

transmitter (for display on the

receiver). Input or outputLow=Alarm

I/O 48 1

GND 8 Common ground -

Table 3-6, Rx connector, transmitter, pin out


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P/N: 84496 (v.E)

3.3 Front Panel Controls, Receiver unit

Navigationbutton A

Display

Navigation

button B

Scroll / Select

Switch

ON/OFF

button

Sq / Navigation

button C

Indicators:

SQ: Squelch open (yellow)

AL : Alarm active (red)

REM: Remote ready (green)

STBY: Standby (yellow)

Headset

connector Loudspeaker

Figure 3-4, Front view, receiver unit, RA-7203

3.3.1 Display - RXThe default display screen shows the most important operational parameters; Frequency and

modulation. In addition, the display will show several menus, submenus and operational parameters

when entering into the menu using Navigation button A.

The default display also indicate if the receiver operated on AC or DC power, by “AC” or “DC” in theupper part of the display.

3.3.2 Scroll/Select switch and Navigation buttons A, B and C - RXThe navigation buttons, A, B and C, together with the Scroll/Select switch are used to navigate

through the menus.

The Scroll/Select switch has three actions: It can be turned clockwise, counter-clockwise, or

momentarily pressed in.

In general the use of the navigation buttons are:

A or Scroll/Select right: Increase a value (up)

B or Scroll/Select left: Decrease a value (down)

C or Scroll/Select press: Confirm or Enter.

The user interface will indicate which navigation button to use.

Navigation button C is dedicated to squelch ON/OFF button in the default view.

3.3.3 ON/OFF button - RXTo switch the unit ON or OFF: Press and hold button for approx 2s.


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P/N: 84496 (v.E)

3.3.4 LED Indicators -RX

SQ (yellow): The receiver squelch is open (receiving audio) when lit.

AL (red): Indicates that an alarm is present in the receiver unit. Details of the alarm will

be shown on the display.

REM (green): This LED has multiple functions. The REMOTE indicator will be lit with a

constant green colour when the receiver is “ready” for remote operation.

Ready means that the audio is output to an external source (600 ohm line

input) or VoIP.

In addition the REMOTE indicator will flash yellow each time the unit is

communicating on either of the remote interfaces (RS232, RS485, Ethernet).

STBY (yellow): The receiver is kept in standby, either by user input, an external signal to theremote interface or because an alarm condition has been detected and the

receiver is set up as a MAIN receiver. In standby the receiver will not output

any audio on any audio interface.

3.3.5 Headset connector - RX

Headset connector


Volt.

[V]

Max

Curr

[mA]

N/C 1 No connection -N/C 2 No connection -

Headset 3 Headset output contains received

audio.

O 1W

N/C 6 No connection -

RS232 4 RS232 TX O ±12V ±15

RS232 5 RS232 RX I ±12V ±15

+12VDC 7 +12 VDC to external amplifier

(100mA max.)

O +12V

GND 8 Common ground - GND

Table 3-7, Headset connector, receiver, pin out

The Headset connector is used for multiple purposes.

• Headset connector:The Headset output (referenced to GND) contains the received audio.

• RS232 serial lineThe RS232 serial line may be used to control radio parameters from an external.


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P/N: 84496 (v.E)

• Hardware key to change access level:In order to change the access level (see chapter 8.3.4.3 for details) a

hardware key must be inserted into the microphone/headsetconnector before entering in to the menu system. The hardware key

consists of a RJ45 connector where pin no. 4 and 5 (RS232 RX and TX) is

connected together.

3.4 Receiver, rear connections

Figure 3-5, Rear view, receiver unit, RA-7203.

3.4.1 Antenna connector - RX (50 ohm N-type)Connect directly to a receiver antenna, or to the receiver antenna connector (BNC) on the

transmitter unit.

3.4.2 DC input connector - RX (Amphenol MS 3106A 10SL4S)(Jotron P/N: 96715)

Figure 3-6, Receiver DC input connector, rear view

Connector for DC supply (21.6 - 31.2 VDC).

Connect to an external DC supply to operate the unit on DC or as a backup supply if the main AC fails.

A is the positive (+) connection and B is connected to ground or chassis (-).


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P/N: 84496 (v.E)

3.4.3 AC Input connector - RX (IEC 60320 - C14)

Figure 3.7, AC input connector

Input for external AC (male).

AC is input between A(N) and C(L). B is chassis ground.

The voltage range is from 85 to 264 VAC, 47-63Hz.

Note!Although signal ground has the same potential as AC ground and DC minus (-), AC ground and

DC (-) should not be used for signalling purpose.

3.4.4 LAN connector - RX (RJ45)

This connector contains the Ethernet bus and is normally connected to a nearby switch/hub. It can

also be connected directly to a computer, using a twisted pair Ethernet cable.

LAN interface connector

Name PIN Purpose

LAN_TXP 1 Tx dataLAN_TXN 2 Tx data

LAN_RXP 3 Rx data

LAN_D3P 4 Optional

LAN_D3N 5 Optional

LAN_RXN 6 Rx data

LAN_D4P 7 Optional

LAN_D4N 8 Optional

Table 3-8, LAN interface connector, pin out


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P/N: 84496 (v.E)

3.4.5 AUX1 CONNECTOR- RX (RJ45)

This connector is normally connected to equipment used for remote control / remote supervision of

the receiver.

AUX1 connector, receiver unit


Volt.

[V]

Max

Curr

[mA]

ALARM_P 1 Alarm out-relay (NO) O±48 120

ALARM_N 2 Alarm out-relay (NO) O

Select_in_P 3 Select in, optocoupler input I 1W±48 32

Select_in_N 6 Select in, optocoupler input I ±12V

RS232_S 4 RS232 Transmit data O ±12V ± 15RS232_R 5 RS232 Receive data I ±12V ± 15

+12V 7 +12VDC output to external

equipment (max 100mA)O +12V 12 100

GND 8 Common ground - GND

Table 3-9, AUX1 connector, receiver, pin out

3.4.6 AUX2 connector - RX (RJ45)

This connector is normally connected to equipment used for remote control / remote supervision of

the transmitter.

AUX2 connector, receiver unit


Volt.

[V]

Max

Curr

[mA]

Squelch_out_P 1 Closed=Receiving (Sq open),

optocoupler outputO

± 48 120Squelch_out_N 2 Closed=Receiving (Sq open),

optocoupler outputO

AGC_HILO_P 3 Hi/Lo output depending on

signal strength, optocoupler

output

O

+15 50

AGC_HILO_N 6 Hi/Lo output depending on

signal strengthO

N/C 4 -

N/C 5 -

AGC_OUT 7 AGC analogue voltage

output, depending on signal

strength. Referred to GND

O 0-4V 5 1

N/C 8 GND - GND

Table 3-10, AUX2 connector, receiver, pin out


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P/N: 84496 (v.E)

3.4.7 REM connector - RX (RJ45)

This connector is normally connected to a co-located transmitter unit (RX connector) when used in a

transceiver configuration, or to other equipment used for remote control of the receiver.

When connected to a transmitter, via a transceiver cable, the connection gives “transceiver”

functionality to the transmitter (Rx line and Squelch). The TX_BUSY and RX_BUSY signals are also

used in VDL mode 2 configurations to signal that the transmitter or receiver is busy transferring data.

Interface to Remote equipment or a transmitter unit


Volt.

[V]

Max

Curr

[mA]

RS485_Z 1 RS485 (-) I/O

RS485_Y 2 RS485(+) I/O

LINE_P 3 Line output from Receiver

unit, 600 ohmI/O

± 15LINE_N 6 Line output from Receiver

unit, 600 ohmO

TX_BUSY 4 TX Busy indicator input (Mute

input)I 48 32

RX_BUSY 5 RX Busy output O 5 1

INT_ALARM 7 Low=Alarm (Note: I/O – low

input will also be recognized

as an alarm (EXT))

I/O 5 1

GND 8 Common ground - GNDTable 3-11, REM connector, receiver, pin out


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P/N: 84496 (v.E)

3.5 PSU-7002, Power Supply Unit, front-view

Indicators:

AC: Operating on AC

ON: ON (DC output)

Figure 3-8, PSU-7002, front view

3.5.1 LED Indicators - PSU

AC (yellow): Indicates that AC is present, and that the unit currently is operating on the

main AC power supply.

ON (green): Indicates that the PSU is ON and supplies DC on its output.

The DC is either derived from the main AC input (shown by the AC indicator),

or from the backup DC input (AC indicator dark).


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P/N: 84496 (v.E)

3.6 Power Supply Unit rear connectors.

Figure 3-9, Power supply unit - rear view

3.6.1 DC input connector – PSU (Amphenol MS 3106A 10SL4S)(Jotron P/N: 96715)The DC input is connected to the DC backup supply (if available).

Input range is 21.6 - 31.2 VDC and current consumption is max 9A average when the transmitter

operates with full rated power output (50W).

A is the positive (+) connection and B is connected to ground (-).

Figure 3-10, DC input connector, PSU

3.6.2 D C output connector – PSU (Amphenol MS 3106A 12S3P)(Jotron P/N: 93697)The DC output connector is connected to the transmitter unit and contains the +28V DC supply for

the transmitter. The DC is generated from the main AC input or the DC backup input.

Figure 3-11, DC output, PSU

A is the positive connector pin (+) and B is connected to ground (-).


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3.6.3 AC Input connector - PSU (IEC 60320 - C14)

Figure 3-12, AC input connector, PSU

Input for external AC (male).

AC is input between A(N) and C(L). B is chassis ground.

The voltage range is from 85 to 264 VAC, 47-63Hz.

Note!

Although signal ground has the same potential as AC ground and DC minus (-), AC ground and DC (-

) should not be used for signalling purpose.


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Jotron AS| TR7750: Operators handbook 3BInstallation Page 4-1

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4 Installation

4.1 Introduction

The procedures for installing the radio units / transceiver are described in table 4.1 below.

It is recommended that these procedures are completed in the order shown.

Procedure Ref. chapter

1 Initial inspection 4.2

2 Install equipment into 19” sub racks (equipmentcabinet)

4.3

3 Connect chassis stud to system earth or cabinet Figure 3-2 (TX)Figure 3-5 (RX)

Figure 3-9 (PSU)4 Connect remote connectors as required 4.6

5 Connect antenna connectors 4.4

6 Connect DC suppl y (if required) 4.5

7 Connect AC suppl y (if required 4.5

Table 4-1, Installation procedures

4.2 Initial inspectionOn receipt of the radio units, remove all transit packaging and check that there is no damage to the

equipment. If damage is evident, contact Jotron immediately and retain the original transit

packaging.


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4.3 Installation into equipment cabinetThe units may be installed into a standard 19” sub-rack with a height of 3U ( 1U= 44.45 mm).

The sub-rack is divided into 84 TE units horizontally (1TE=5.08mm). The transmitter occupies 28 TE,

the PSU occupies 14TE and the receiver unit occupies 14TE.

For a transceiver this leaves a free space of 28TE available for other equipment.

Figure 4-1 shows some examples for installation into 19” sub-rack. From top to bottom the figure

shows: 6 receivers in one sub-rack, 2 transmitters with PSU in one sub-rack and 3 transmitters

without PSU (operated on DC) in one sub-rack. Jotron suggests that more space is added for better

heat dissipation, if possible.

Figure 4-1, Examples of various configurations


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4.4 Antenna connectorsThe antenna should be of good quality with regards to gain and VSWR to obtain maximum

performance. Make sure that the VSWR on the antenna is low, and that the cable from the

transmitter to the antenna is of good quality to avoid mismatch and unnecessary losses.A cable loss of 1 dB is the same as reducing the power output of a 50W transmitter to less than 40W.

Similarly, a cable loss of 2 dB is the same as reducing the output power to less than 32W.

In areas were thunderstorms and lightning is a problem, surge arrestors should be mounted where

the antenna cables enters into the building. The arrestors should be of good quality and be capable

of handling the output power of the transmitter.

The antenna output of the transmitter is an N-type antenna connector at the back of the transmitter.

The second connector (BNC-type) is the output from the Tx antenna switch and can be used to

connect to a receiver for T/R switching to a common antenna in Transceiver configuration. This

output connector must NOT

4.5 AC and DC connectors

be used for TX main/standby switching.

Refer to section 3.2.3, 3.4.2, 3.4.3 and 3.6 for voltages and connectors.


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4.6 Remote signalsSeveral remote signals are available on the rear interfaces of the radio units. These signals can be

grouped into: Audio signals, Key signals, Data interface signals and other signals.

Note, for all interface signals, RJ45 connectors are used. As far as practically possible, the pairs used

on a standard Ethernet connection are used when a signal is input/output as a pair to the radio (e.g.

audio lines). For interconnections between the transmitter and receiver, and for interconnection to a

distribution panel with RJ45 connectors, standard Cat5E, Ethernet cable should be used. This is a

good quality, screened cable, with 1 to 1 connections between the two connectors.

Below is an overview of the signals available and their primary use. Refer to chapter 3.2 and 3.4 for

an overview of the different connectors.

4.6.1 Transceiver cable – Transceiver operation

When the Transmitter is wired together with a Receiver as a Transceiver, the Transmitter REMconnector will also have the basic functionality for remotely controlling the receiver.

Transceiver wiring may ether be done by using a standard Cat5e computer cable with RJ45

connectors between the units (Rx-REM to Tx-RX connector) or via KRONE connection inter-wiring

The Transceiver cable signals and pin out are as follows:

TX - REM/RX RX - REM PIN NAME DESCRIPTION

Pin no Pin no

1 1 RS485_Z RS485 - serial communication

2 2 RS485_Y RS485 - serial communication

3 3 LINE_P

RX Audio 600ohm balanced4 4 TX BUSY TTL L=transmitting (RX pullup)

5 5 RX BUSY TTL L=receiving (TX pullup)

6 6 LINE_N RX Audio 600ohm balanced

7 7 ALARM Alarm (TTL) I/O TRX alarm

8 8 GND Ground

CABLE

4 p a i r s

R J 4 5 - C a t 5 E ,

F T P

Table 4-2, Transceiver, transmitter – receiver interconnections

When connecting the signals on the transmitter RX connector with the signals on the receivers REM

connector, via the transceiver cable, the following functionality is added to the transmitter and

receiver:

The receiver audio line (p.3 and p.6) is input to the transmitter. This makes receiver audio available in the transmitter headphone connector, allowing only

one plug to be used for a combined headset/microphone.

In addition a 2 wire interface to the transmitters audio input line is possible for combined

transmitter and receiver audio.

Finally, it enables monitoring of both the transmitted audio and the received audio via the

monitor output line (AUX2, p.3 and p.6) on the transmitter.

A RX Busy signal (p.5) is input to the transmitter from the receiver. This signal signals the transmitter that the RX is busy. This is used in VDL operation.


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A TX Busy signal (p.4) is output from the transmitter to the receiver. This signal signals the receiver that the TX is busy (transmitting). This is used in VDL

operation, and to mute the receiver while transmitting (see table below).

A receiver alarm in/out is connected to the transmitter alarm in/out.This enables the functionality that the complete transceiver (both receiver and transmitter

unit) will enter into alarm state if one of the units fails. This is useful if the complete

transceiver should be switched to a backup transceiver.

The RS485 serial lines from both units are connected in parallel. This is useful to have only one connection point for the RS485 on the transceiver for remote

control.

RS485 serial bus is primarily used by the Data Remote Control unit (DRC) and Operators

Remote Control unit (ORC) to remotely set/change frequency and other parameters, on the

Receiver, Transmitter or Transceiver.

4.6.1.1 Transceiver cable- pin out

Standard Ethernet Cat5 patch cable (straight)

Figure 4.2, Ethernet patch cable pin out


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4.6.1.2 Menu parameters, transmitter - receiver interconnection

Menu path:Interface config►

Parameter Details

RS485(TX and RX)

Bitrate See chapter 8.2.4.3 and 8.3.4.3 for details

RS485(TX and RX)

Address See chapter 8.2.4.3 and 8.3.4.3 for details

RS485(TX and RX)

Protocol See chapter 8.2.4.3 and 8.3.4.3 for details

Menu path:TX config ►

Parameter Details

Audio(TX)

Monitor output See chapter 8.2.4.2 for details

Audio(TX)

Line=> Headgain

See chapter 8.2.4.2 for details

Menu path:RX config ►

Parameter Details

Audio(RX)

Mute ontransmit


Audio(RX)

Output source See chapter 8.3.4.2 for details

Audio(RX)

Line Outputlevel


Table 4-3, Settings associated with the transmitter - receiver interconnection


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4.6.2 Audio in/out and Line loop keying

Figure 4-3, Audio interfaces on the transmitter and receiver units

With reference to Figure 4-2, the following audio remote signals are available on the rear connectors:

Monitor out: Monitor signal, usually connected to a recording unit.

4.6.2.1 Menu parameters, Monitor output

Menu path Parameter Details

Audio(TX)

Monitor output See chapter 8.2.4.2 for details

Audio(TX)

Monitor level See chapter 8.2.4.2 for details

Table 4-4, Settings associated with MONITOR OUTPUT (TA – AUX1)


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Line input, transmitter: This is the transmitter audio line input. This signal is usuallyconnected to a VCS system or a remote control that uses a 600 ohm line interface.

4.6.2.2 Menu parameters, Line input -TX


Parameter Details

Audio(TX)

Input source See chapter 8.2.4.2 for details

Audio(TX)

Line sensitivity See chapter 8.2.4.2 for details

Audio(TX)

Linetermination


Audio

(TX)

Line mute level See chapter 8.2.4.2 for details

Keying(TX)

Source See chapter 8.2.4.2 for details

Keying(TX)

Loop key bias Line loop Keying.See chapter 8.2.4.2 for details

Table 4-5, Settings associated with LINE_INPUT (TX-REM)

Line output, receiver: This is the receiver audio line output. This signal is usually connectedto the VCS system or a remote control that uses a 600 ohm line interface.

4.6.2.3 Menu parameters, Line output - RX

Menu path:RX config ►

Parameter Details

Aud io(RX)

Output source See chapter 8.3.4.2 for details

Aud io(RX)

Line output level See chapter 8.3.4.2 for details

Table 4-6, Settings associated with LINE_OUTPUT (RX-REM)


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4.6.3 Other key signals

Figure 4-4, Key signals on the transmitter unit

In addition to the line loop keying, it is possible to key the transmitter, using several other hardware

and software options.

TX_KEY_GThis is a input on the transmitter REM connector, pin 4. This pin, if connected to GND, will

key the transmitter.

TXKEY_P, TXKEY_NThis is a differential input, on the transmitter AUX2 connector, pin 7 and 8. A DC voltage

between 5 and 48V(+ or -) between the pins will key the transmitter.

Note also that this is a differential signal, not connected to any ground potential inside the

transmitter, therefore the signal can be configured for both positive and negative voltage

keying (see figure).

4.6.3.1 Menu parameters, Key source -transmitter


Parameter Details

Keying(TX)

Source See chapter 8.2.4.2 for details

Table 4-7, Key Source settings


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4.6.4 Squelch and AGC signals, receiver unit

Figure 4-5, Squelch and AGC signals receiver unit

RX_BUSY (REM, p.5)Squelch output signal that is refered to GND.

This signal can be used to detect that the receiver is busy on a connected transmitter unit, on

a remote control or any other units that can use this signal.

The signal function (Open or Closed on busy) can be configured.

SQUELCH (AUX2, p.1 and p.2)This signal indicates that the squelch is activated / closed.

The signal function (Open or Closed on busy) can be configured.

The output is a solid state relay, rated for maximum 100V / 100mA.

AGC_HILO_P, AGC_HILO_N (AUX2, p.3 and p.6)This signal indicates that a signal above approximately +40 dBuV is received.

This can be used to detect if the signa

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Operation and Installation Manual TR7750 VE