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GE Manuals
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MDS 4790 Series
Installation & operation manual
GE MDS 4790 Series Installation & Operation Manual
400 mhz/900 mhz multiple address system master station radio
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Contents
Table of Contents
Bookmarks
Table of Contents
Quick Start Guide
Table of Contents
Environmental Information
1 Introduction
2 Product Description
Network-Wide Diagnostics
Redundant Versus Non-Redundant Operation
Applications
Basic MAS Master Station Operation
Repeater and Polling Remote Operation
Simplex and Switched Carrier Operation
Features
Accessories
Model Number Codes
3 Installation Planning
General Requirements
Site Selection
A Word about Interference
Antenna and Feedline Selection
Antenna System
Feedline Selection
4 Installation Procedures
Unpacking and Inspection
Mounting the Radio
Rack Mounting
Tabletop Mounting
Remote Front Panel Mounting-Optional Configuration
Primary Power
AC-Powered Units
DC-Powered Units
Backup Battery
Location of Battery Backup Switch
Low-Voltage Disconnect Feature
Battery Reset Switch (SW1/LVD PCB)
Antenna Installation
Feedline Installation
Interface Wiring Connections
TX, Antenna, and RX Coaxial Connectors (Type-N)
Ground Connection
Diagnostics Connector-J1
4-Wire Audio Connector-J2
Data Interface Connector-J3
Orderwire Connector-J9
Alarm Contacts-J10
Post Installation Checks
5 Start-Up and Operation
Initial Startup
Normal Indications
Maximizing RSSI
Coordinating Activities by Orderwire
Front Panel Indicators
LED Indicators
Front Panel Display
6 Diagnostics and Control
PC Connection
PC Command Summaries
Commands and Command Parameters
Detailed Command Descriptions
Alarm
Amask [0000 0000-Ffff Ffff]
Asense [Hi/Lo]
Batt(Ery) [ON/OFF]
BAUD [XXXXX Abc]
Buff [On/Off]
Ckey [On/Off]
Cts [0-255]
Datakey [On/Off]
DATE [MMM DD Yyyy]
Dkey
DLINK [On/Off/XXXX]
DMGAP [XX]
Dtype [Node/Root/Gate/Peer]
Emp [On/Off]
Hrev
Init
Key
Log [Clr]
Maddr [None, 1-255]
Model
Modem [None/4800/9600/19200/Default]
Nmask [0000 0000-Ffff Ffff]
Opt
OWM [XXXXX]
OWN [XXXXX]
Ptt [0-255]
Pwr [20-37]
Radio [Auto/A/B]
Repeater [On/Off]
Rssi, Rssi
Rtu [On/Off/0-80]
RX [XXX]
RXLEVEL [-20 to +3]
RXMUTE [On/Off/Time in Msec]
Rxpad [On/Off]
Rxtot [None, 1-1440]
Scd [0-255]
Ser
Show [DC/Pwr/Current/Radio]
Snr, Snr
Srev
Standby [On/Off]
Stat
Temp
TIME [Hh:MM:ss]
Tot [On/Off, 1-255]
TX [XXXX]
Txgain [On/Off]
TXLEVEL [-20 to +3, AUTO]
Unit [10000-65000]
Configuration and Programming Using the Front Panel
Programming and Control Buttons
Navigating through the Front Panel Screens
Switching the Front Panel Display to Configuration Mode
Use of Control Buttons in Configuration Mode
Changing Radio Functions
Screen Descriptions
Group 1-Startup Screen and Menu Directory
Group 2-Configuration Screens
Group 3-Diagnostic Screens
Group 4-Event Log
Display Contrast
Set Time
Set Date
7 Local & Network-Wide Problem Solving
Local Problem-Solving
Front Panel Leds
Chassis-Mounted Leds
Problem Solving Using a Connected PC
Problem Solving Using the Front Panel Display
System Bench Testing Set-Up
Performing Network-Wide Radio Diagnostics
8 Replacing Assemblies
Transceiver Board and Power Supply Assemblies
Installation & Removal of Backup Battery (P/N 28-1575Axx)
Front Panel
Operating Frequency Change Considerations
MDS 4790-400 Mhz Notch-Type Duplexers
MDS 9790-Bandpass-Type Duplexers
MDS 4790/9790 Simplex Radios-With Antenna Switch Modules
MDS 4790/970-Front End Helical Coil Alignment
Testing and Removing an Internal Duplexer
Testing
Removing the Internal Duplexer
Testing and Removing the Antenna Switch Module
Testing
Removing the Antenna Switch
Cooling Fan Maintenance
9 Radio Software Upgrades
Obtaining New Code
Preparing for Download
Downloading New Code-Procedure
10 Technical Reference
Technical Specifications
RF Propagation Planning
Fresnel Zone Clearance
Earth Curvature
Fade Margins
Calculating Path Loss
Formulas for System Planning
Free Space Path Loss
Fresnel Zone Boundary
Theoretical Signal Strength
Probability of System Fading
Dbm-Volts-Watts Conversion Chart
In Case of Difficulty
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Quick Links
1
Quick Start Guide
2
Basic Mas Master Station Operation
Download this manual
MDS 4790/9790 Series
(including MDS 4790A/C/E/S, MDS 9790A)
400 MHz/900 MHz
Multiple Address System
Master Station Radio
MDS 05-3438A01, Rev. F
SEPTEMBER 2008
RSPSupply - 1-888-532-2706 - www.RSPSupply.com
http://www.RSPSupply.com/p-8457-MDS-UP-9790X.aspx
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This manual is also suitable for:
Mds 4790a
Mds 9790 series
Mds 4790s
Mds 9790a
Mds 4790c
Mds 4790e
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