Microwave Data Systems MDS 4310 Owner's manual

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A CALIFORNIA MICROWAVE DIVISION
MDS 4310
350–512 MHZ
RADIO TRANSCEIVER
ANTENNA
INTERFACE
TD IN RD
TR MR CD
13.8 VDC
+–
Installation, Operation & Field Maintenance
Covering the MDS 4310 Transceiver with the 05-2314Axx PCB,
the MDS 4350 & 4355 Packaged Systems and All Basic Options
MDS 05-2415A01, Rev. A
SEPTEMBER 1994

MDS 2415A01, Rev. A Front Cover-B
MDS 4310 QUICK START GUIDE
Below are the basic steps for installing the MDS 4310 (350—512 MHz) Data Transceiver. The infor-
mation in parentheses indicates the chapters in this manual where detailed explanations are found.
1. Verify radio set-up parameters. (Chapters 2 & 3)
Check the test data sheets packed with the transceiver to be sure the radio is properly configured
for the intended application. Check especially for these items:
• Proper configuration of software selectable settings such as, CTS delay, soft carrier dekey
(SCD), squelch tail eliminator (STE), time-out timer (TOT) and PTT delay. Chapter 3 gives
instructions for setting these parameters.
• Transmit and Receive frequencies.
(Should be the same as those listed on the station license.)
• Transmitter RF power output.
• Loopback Code.
(Default loopback code consists of the last four digits of the radio’s serial number.)
• Transmit modulation and audio input characteristics.
• Modem speed (if radio is modem-equipped).
2. Securely mount the transceiver. (Chapter 2)
• Use the MDS supplied mounting brackets and four screws or bolts (fasteners not provided).
• Choose a mounting location that allows easy access to the connectors on the end of the radio
and allows an unobstructed view of the LED status indicators.
3. Install and connect the antenna system to the radio. (Chapter 2)
• Use good quality, low loss coaxial cable.
• Keep the antenna feedline as short as possible.
• Avoid sharp bends in the coaxial cable.
• Preset the antenna in the direction of the master station.
• Properly waterproof the antenna connector.
4. Connect and apply DC power to the radio. (Chapter 2)
• Set supply voltage to a nominal 13.8 volts.
• Observe polarity.
• Power cord must be properly fused (3 Amperes).
• Plug in the power plug and tighten the retaining screw.
5. Verify radio communications by observing the LED display. (Chapter 2)
• See Tables 2-2 and 2-3 for interpretation of status LEDs.
• Refine the antenna heading by using a DC voltmeter or Hand-Held Terminal (HHT) to measure
the radio’s received signal (RSSI).
6. Connect the data equipment to the radio INTERFACE connector. (Chapter 2)
• Connection must be made with a DB-25 Male (25 pin) connector.
• Connect only the required pins. Do not use a straight-through RS-232 cable with all pins wired.
• Verify the equipment connected to the INTERFACE connector is configured as DTE. The radio
is configured as DCE (data communications equipment).
• Pin connections for the INTERFACE connector are summarized in Table 2-1.

MDS P/N 05-2515A01, Rev. A
SEPTEMBER 1994
MDS 4310
350–512 MHz RADIO TRANSCEIVER
Including the…
MDS 4350 and MDS 4355 PACKAGE MODEL RADIOS
INSTALLATION, OPERATION
AND
FIELD MAINTENANCE
Copyright © 1994
Microwave Data Systems
All Rights Reserved
MICROWAVE DATA SYSTEMS
175 Science Parkway, Rochester, New York 14620
Telephone No.: 716-242-9600, FAX No.: 716-242-9620

The following are trademarks…
Thruline™—Bird, Inc.
HELIAX™—Andrew Corporation.
PCTALK™—The Headlands Press, Inc.
PCPLUS™—DataStorm Technologies, Inc.
PROCOMM™—DataStorm Technologies, Inc.
If further assistance with this product is required, please contact:
MICROWAVE DATA SYSTEMS
A Division of California Microwave Incorporated
175 Science Parkway
Rochester, New York 14620
Telephone No.: 716-242-9600
FAX No.: 716-242-9620
Copyright © 1994 by Microwave Data Systems
All rights reserved.

MDS 2141A01, Rev. A i
TABLE OF CONTENTS
CHAPTER 1—GENERAL
INTRODUCTION ------------------------------------------------------------------------------------------------------1-1
APPLICATIONS--------------------------------------------------------------------------------------------------------1-1
TERMS “ANALOG” AND “DIGITAL” ----------------------------------------------------------------------------1-2
MDS 4310 MODULATION TECHNIQUES -----------------------------------------------------------------------1-2
MICROCONTROLLER FEATURES -------------------------------------------------------------------------------1-2
SOFT CARIER DEKEY -----------------------------------------------------------------------------------------------1-3
CONTROL INPUTS AND OUTPUTS ------------------------------------------------------------------------------1-3
MODEL NUMBER CODES --------------------------------------------------------------------------1-4
MAIN PRINTED CIRCUIT BOARD MODELS --------------------------------------------------1-4
SPECIFICATIONS -----------------------------------------------------------------------------------------------------1-5
OPTIONAL EQUIPMENT, ACCESSORIES and CERTIFICATIONS -------------------------------------- 1-10
Special Certifications--------------------------------------------------------------------------------- 1-10
1200 BPS Bell 202T Modem------------------------------------------------------------------------ 1-11
4800 BPS Modem------------------------------------------------------------------------------------- 1-11
9600 BPS Modem------------------------------------------------------------------------------------- 1-11
Audio Processing Module---------------------------------------------------------------------------- 1-11
Order Wire Module----------------------------------------------------------------------------------- 1-11
Remote Maintenance Module (Internal)—P/N 03-1958A01 ----------------------------------- 1-11
Hand-Held Terminal---------------------------------------------------------------------------------- 1-12
RS-232 to RS-422 Converter Assembly—P/N 01-2358A01------------------------------------ 1-12
TTL to RS-232 Converter Assembly--------------------------------------------------------------- 1-12
CHAPTER 2—INSTALLATION
OVERVIEW -------------------------------------------------------------------------------------------------------------2-1
SURFACE MOUNTING ----------------------------------------------------------------------------------------------2-2
EXTERNAL CONNECTIONS ---------------------------------------------------------------------------------------2-4
ANTENNA Connector ---------------------------------------------------------------------------------2-4
DC IN (Power) Connector -----------------------------------------------------------------------------2-4
INTERFACE Connector -------------------------------------------------------------------------------2-4
INTERFACE Connector Pin Functional Descriptions---------------------------------------------2-7
FRONT PANEL INDICATORS------------------------------------------------------------------------------------ 2-11
TRANSCEIVER CONFIGURATION JUMPERS --------------------------------------------------------------- 2-12
J14—Receiver Audio Output Phase ---------------------------------------------------------------- 2-13
J16—Full Duplex Option Connector--------------------------------------------------------------- 2-13
MODEMS—GENERAL--------------------------------------------------------------------------------------------- 2-13
Introduction-------------------------------------------------------------------------------------------- 2-13
The Role of the Modem ------------------------------------------------------------------------------ 2-14
RTS and CTS Signals ------------------------------------------------------------------------------- 2-14
DCD Signal -------------------------------------------------------------------------------------------- 2-14
POWER REQUIREMENTS----------------------------------------------------------------------------------------- 2-14
ANTENNAS AND FEEDLINES----------------------------------------------------------------------------------- 2-15
Antenna Selection and Mounting ------------------------------------------------------------------- 2-15
Feedline Selection------------------------------------------------------------------------------------- 2-16
Feedline Installation ---------------------------------------------------------------------------------- 2-17

ii TABLE OF CONTENTS MDS 2141A01, Rev. A
CHAPTER 3—PROGRAMMING AND DIAGNOSTICS
INTRODUCTION------------------------------------------------------------------------------------------------------ 3-1
TERMINAL CONNECTION AND STARTUP ------------------------------------------------------------------- 3-1
Opening The Diagnostic Channel -------------------------------------------------------------------- 3-3
CAPABILITIES OF THE HHT -------------------------------------------------------------------------------------- 3-4
Review Operating Parameters and Diagnostic Information -------------------------------------- 3-4
Setting the Operating Parameters--------------------------------------------------------------------- 3-5
Program User Information ---------------------------------------------------------------------------- 3-5
USING THE HAND-HELD TERMINAL -------------------------------------------------------------------------- 3-5
Command Syntax--------------------------------------------------------------------------------------- 3-5
Shift Key------------------------------------------------------------------------------------------------- 3-5
Backspace (BKSP) Key ------------------------------------------------------------------------------- 3-5
Error Messages------------------------------------------------------------------------------------------ 3-6
Closing the Diagnostic Channel---------------------------------------------------------------------- 3-6
PROGRAMMING EXAMPLES------------------------------------------------------------------------------------- 3-6
PROGRAMMING OWNER’S INFORMATION ----------------------------------------------------------------- 3-8
PASSWORD PROTECTION----------------------------------------------------------------------------------------- 3-8
DIAGNOSTIC EVALUATION-------------------------------------------------------------------------------------- 3-8
Test Modes ---------------------------------------------------------------------------------------------- 3-9
EQUIPMENT DIAGNOSTICS DEFINITIONS------------------------------------------------------------------- 3-9
DIAGNOSTIC EXAMPLES-----------------------------------------------------------------------------------------3-10
RF Power Output Check -----------------------------------------------------------------------------3-10
Received Signal Strength Indication (RSSI) Check ----------------------------------------------3-10
PROGRAMMING AND TEST COMMANDS -------------------------------------------------------------------3-11
HAND-HELD TERMINAL SETUP DEFAULTS ---------------------------------------------------------------3-13
HAND-HELD TERMINAL WIRING -----------------------------------------------------------------------------3-14
Adapter Plug Wiring ----------------------------------------------------------------------------------3-14
HHT ALTERNATIVES ----------------------------------------------------------------------------------------------3-15
Cable Wiring for a PC or ASCII Terminal --------------------------------------------------------3-15
CHAPTER 4—FIELD TESTS AND ADJUSTMENTS
GENERAL -------------------------------------------------------------------------------------------------------------- 4-1
TEST EQUIPMENT REQUIRED ----------------------------------------------------------------------------------- 4-1
CONSTRUCTING A DATA TERMINAL EMULATOR-------------------------------------------------------- 4-3
REMOTE MAINTENANCE CONSIDERATIONS--------------------------------------------------------------- 4-5
INTRODUCTION TO FIELD TESTS & ADJUSTMENTS ----------------------------------------------------- 4-6
TEST PROCEDURES:
Basic Transceiver Checks ----------------------------------------------------------------------------- 4-7
Transmit Frequency, Squelch, Deviation and Receive Audio Output
For Radios with No Internal Modem-----------------------------------------------------4-10
For Radios with MDS’s Internal 1200 BPS Modem-----------------------------------4-11
For Radios with MDS’s Internal 4800 BPS Modem-----------------------------------4-14
For Units with MDS’s Internal 9600 BPS Modem ------------------------------------4-16
REMOTE MAINTENANCE MODULE—
Loopback Code Programming, Mode Selection, Calibration & Testing ----------------------4-19

MDS 2141A01, Rev. A TABLE OF CONTENTS iii
CHAPTER 5—THEORY OF OPERATION
RECEIVE FRONT END-----------------------------------------------------------------------------------------------5-1
HIGH IF ------------------------------------------------------------------------------------------------------------------5-1
LOW IF -------------------------------------------------------------------------------------------------------------------5-1
RECEIVE AUDIO ------------------------------------------------------------------------------------------------------5-1
SQUELCH ---------------------------------------------------------------------------------------------------------------5-2
POWER SUPPLY-------------------------------------------------------------------------------------------------------5-2
TRANSMIT POWER AMPLIFIER----------------------------------------------------------------------------------5-3
ANTENNA SWITCH --------------------------------------------------------------------------------------------------5-3
DIRECTIONAL COUPLER-------------------------------------------------------------------------------------------5-3
KEYLINE AND CONTROL CIRCUITS ---------------------------------------------------------------------------5-3
RADIO DISABLE ------------------------------------------------------------------------------------------------------5-3
AUDIO/DATA MODULATION INPUT SWITCHING----------------------------------------------------------5-4
MICROCONTROLLER/EEPROM ----------------------------------------------------------------------------------5-4
DIAGNOSTICS DATA CONTROL ---------------------------------------------------------------------------------5-4
TRANSMIT AUDIO ---------------------------------------------------------------------------------------------------5-5
PLL/SYNTHESIZER---------------------------------------------------------------------------------------------------5-5
RS-232 DATA INTERFACE------------------------------------------------------------------------------------------5-5
LED INDICATORS ----------------------------------------------------------------------------------------------------5-5
CHAPTER 6—TROUBLESHOOTING
This section contains basic field troubleshooting assistance for the transceiver system.
APPENDIX A—1200 BPS BELL 202T COMPATIBLE MODEM
INTRODUCTION -----------------------------------------------------------------------------------------------------A-1
SPECIFICATIONS ----------------------------------------------------------------------------------------------------A-1
ALIGNMENT ----------------------------------------------------------------------------------------------------------A-1
THEORY OF OPERATION------------------------------------------------------------------------------------------A-2
APPENDIX B—4800 BPS FSK MODEM
INTRODUCTION -----------------------------------------------------------------------------------------------------B-1
SPECIFICATIONS ---------------------------------------------------------------------------------------------------- B-1
INSTALLATION ------------------------------------------------------------------------------------------------------B-1
ALIGNMENT ---------------------------------------------------------------------------------------------------------- B-1
THEORY OF OPERATION------------------------------------------------------------------------------------------ B-1
APPENDIX C—9600 BPS FSK MODEM
INTRODUCTION -----------------------------------------------------------------------------------------------------C-1
SPECIFICATIONS ---------------------------------------------------------------------------------------------------- C-1
INSTALLATION ------------------------------------------------------------------------------------------------------C-1
ALIGNMENT ---------------------------------------------------------------------------------------------------------- C-1
THEORY OF OPERATION------------------------------------------------------------------------------------------ C-1

iv TABLE OF CONTENTS MDS 2141A01, Rev. A
APPENDIX D—REMOTE MAINTENANCE MODULE
INTRODUCTION----------------------------------------------------------------------------------------------------- D-1
OPERATION ---------------------------------------------------------------------------------------------------------- D-1
MODULE ADJUSTMENTS & CALIBRATION ---------------------------------------------------------------- D-2
DETERMINING THE PRESENCE OF A REMOTE MAINTENANCE MODULE ----------------------- D-2
INSTALLATION & REPLACEMENT---------------------------------------------------------------------------- D-3
TESTING THE LOOPBACK CODE ------------------------------------------------------------------------------ D-4
TROUBLESHOOTING ---------------------------------------------------------------------------------------------- D-4
THEORY OF OPERATION ----------------------------------------------------------------------------------------- D-5
APPENDIX E—ORDER WIRE MODULE
INTRODUCTION------------------------------------------------------------------------------------------------------E-1
THEORY OF OPERATION ------------------------------------------------------------------------------------------E-2
APPENDIX F—MDS 4355 REMOTE RADIO PACKAGED SYSTEM
GENERAL INFORMATION----------------------------------------------------------------------------------------- F-1
INTERFACE ASSEMBLIES-----------------------------------------------------------------------------------------F-2
Analog Interface Assembly—P/N 03-1105A21 ---------------------------------------------------F-2
RS-232/TTL Digital Interface Assembly—P/N 03-1467A21 ------------------------------------F-2
POWER CONNECTIONS -------------------------------------------------------------------------------------------- F-3
Primary Power—J3------------------------------------------------------------------------------------- F-3
Power for Accessories ---------------------------------------------------------------------------------F-3
Back-up Battery ---------------------------------------------------------------------------------------- F-3
ANALOG INTERFACE BOARD CONNECTIONS—P/N 03-1105A21, Rev. C----------------------------F-4
Audio and Keyline—J1--------------------------------------------------------------------------------F-4
Additional Interface Connections --------------------------------------------------------------------F-4
Audio Alignment ---------------------------------------------------------------------------------------F-5
DIGITAL RS-232/TTL INTERFACE BOARD CONNECTIONS, P/N 03-1467A21 --------------------- F-11
Summary----------------------------------------------------------------------------------------------- F-11
RS-232 Digital Interface Connections------------------------------------------------------------- F-12
TTL Digital Interface Connections ---------------------------------------------------------------- F-12
Additional Interface Connections ------------------------------------------------------------------ F-12
Order Wire Audio Alignment ---------------------------------------------------------------------- F-12
APPENDIX G—MDS 4355 REMOTE RADIO PACKAGED SYSTEM
GENERAL INFORMATION---------------------------------------------------------------------------------------- G-1
CUSTOMER MODIFICATION ------------------------------------------------------------------------------------ G-2
MOUNTING ----------------------------------------------------------------------------------------------------------- G-2
INTERFACE ASSEMBLIES—Summary ------------------------------------------------------------------------- G-5
Analog Interface/Utility Assembly—P/N 03-2110A01------------------------------------------ G-5
RS-232 Digital Interface and Utility Board—P/N 03-2115A01 -------------------------------- G-5
USING THE MDS HAND-HELD TERMINAL------------------------------------------------------------------ G-5
POWER CONNECTIONS ------------------------------------------------------------------------------------------- G-6
Primary Power—TB2--------------------------------------------------------------------------------- G-6
Power for Accessories -------------------------------------------------------------------------------- G-7
Back-up Battery --------------------------------------------------------------------------------------- G-7

MDS 2141A01, Rev. A TABLE OF CONTENTS v
ANALOG INTERFACE/UTILITY BOARD CONNECTIONS—P/N 03-2110A01-------------------------G-8
Audio and Keyline—TB1-----------------------------------------------------------------------------G-8
Additional Interface Connections--------------------------------------------------------------------G-8
Audio Alignment---------------------------------------------------------------------------------------G-9
Order Wire Audio Alignment ------------------------------------------------------------------------G-9
DIGITAL INTERFACE/UTILITY BOARD CONNECTIONS—P/N 03-2115A01— -------------------- G-13
Summary ---------------------------------------------------------------------------------------------- G-13
RS-232 Digital Interface Connections ------------------------------------------------------------ G-13
Additional Interface Connections------------------------------------------------------------------ G-14
Order Wire Audio Alignment ---------------------------------------------------------------------- G-14
APPENDIX H—MDS 4310-HL
DATA TRANSCEIVER FOR USE IN HAZARDOUS LOCATIONS
INTRODUCTION -----------------------------------------------------------------------------------------------------H-1
CONDITIONS OF APPROVAL ------------------------------------------------------------------------------------H-1
APPENDIX I—CANADIAN CERTIFICATION
RSS APPROVALS -----------------------------------------------------------------------------------------------------I-1
RESTRICTIONS--------------------------------------------------------------------------------------------------------I-1
APPENDIX J—AUDIO PROCESSING MODULE
INTRODUCTION ------------------------------------------------------------------------------------------------------J-1
SPECIFICATIONS -----------------------------------------------------------------------------------------------------J-1
ALIGNMENT -----------------------------------------------------------------------------------------------------------J-2
CONFIGURATION ----------------------------------------------------------------------------------------------------J-2
TABLES
Table 2-1. DB-25 Interface Connector Pin Functions--------------------------------------------------------------2-6
Table 2-2. External Indicators For Radios Without Internal Modems ----------------------------------------- 2-11
Table 2-3. External Indicators For Radios WithInternal Modems----------------------------------------------2-12
Table 2-4. J11–External Interface TTL/RS-232 ------------------------------------------------------------------ 2-13
Table 2-5. J14 Receiver Audio Output Normal/Inverted -------------------------------------------------------- 2-13
Table 2-6. Signal Loss versus Cable Length and Type ---------------------------------------------------------- 2-16
Table 3-1. Diagnostic and Control Capabilities------------------------------------------------------------------- 3-10
Table 3-2. Programming and Test Commands-------------------------------------------------------------------- 3-11
Table 3-3. Hand-Held Terminal Operating Defaults -------------------------------------------------------------3-14
Table 4-1. Main Circuit Board Potentiometer Settings for Remote Maintenance------------------------------4-6
Table 4-2. Test Procedure Reference Chart -------------------------------------------------------------------------4-6
Table B-1. Settings for the MDS 4800 bps Modem’s Configuration Switch S1 ------------------------------ B-3
Table C-1. Settings for the MDS 9600 bps Modem’s Configuration Switch S1 ------------------------------ C-2
Table F-1. Interface Board J1 Connectors -------------------------------------------------------------------------F-11
Table G-1. Interface Board TB1 Connectors -------------------------------------------------------------------- G-13
Table J-1. P/N 03–2301A01 Configuration Switch Settings ------------------------------------------------------J-2