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GE MDS 4790 Series Manuals
Manuals and User Guides for GE MDS 4790 Series. We have
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GE MDS 4790 Series manual available for free PDF download: Installation & Operation Manual
GE MDS 4790 Series Installation & Operation Manual (124 pages)
400 MHz/900 MHz Multiple Address System Master Station Radio
Brand:
GE
| Category:
Radio
| Size: 1.57 MB
Table of Contents
Quick Start Guide
2
Table of Contents
3
Environmental Information
8
1 Introduction
9
2 Product Description
9
Network-Wide Diagnostics
10
Redundant Versus Non-Redundant Operation
10
Applications
11
Basic MAS Master Station Operation
11
Repeater and Polling Remote Operation
11
Simplex and Switched Carrier Operation
12
Features
12
Accessories
13
Model Number Codes
14
3 Installation Planning
14
General Requirements
14
Site Selection
15
A Word about Interference
16
Antenna and Feedline Selection
17
Antenna System
17
Feedline Selection
17
4 Installation Procedures
18
Unpacking and Inspection
19
Mounting the Radio
19
Rack Mounting
20
Tabletop Mounting
20
Remote Front Panel Mounting-Optional Configuration
20
Primary Power
21
AC-Powered Units
22
DC-Powered Units
22
Backup Battery
23
Location of Battery Backup Switch
23
Low-Voltage Disconnect Feature
24
Battery Reset Switch (SW1/LVD PCB)
24
Antenna Installation
25
Feedline Installation
25
Interface Wiring Connections
26
TX, Antenna, and RX Coaxial Connectors (Type-N)
26
Ground Connection
29
Diagnostics Connector-J1
29
4-Wire Audio Connector-J2
30
Data Interface Connector-J3
31
Orderwire Connector-J9
32
Alarm Contacts-J10
32
Post Installation Checks
34
5 Start-Up and Operation
34
Initial Startup
34
Normal Indications
34
Maximizing RSSI
34
Coordinating Activities by Orderwire
35
Front Panel Indicators
35
LED Indicators
36
Front Panel Display
37
6 Diagnostics and Control
38
PC Connection
38
PC Command Summaries
40
Commands and Command Parameters
41
Detailed Command Descriptions
45
Alarm
45
Amask [0000 0000-Ffff Ffff]
48
Asense [Hi/Lo]
49
Batt(Ery) [ON/OFF]
49
BAUD [XXXXX Abc]
50
Buff [On/Off]
50
Ckey [On/Off]
51
Cts [0-255]
51
Datakey [On/Off]
52
DATE [MMM DD Yyyy]
52
Dkey
53
DLINK [On/Off/XXXX]
53
DMGAP [XX]
53
Dtype [Node/Root/Gate/Peer]
54
Emp [On/Off]
54
Hrev
54
Init
54
Key
55
Log [Clr]
56
Maddr [None, 1-255]
56
Model
56
Modem [None/4800/9600/19200/Default]
56
Nmask [0000 0000-Ffff Ffff]
57
Opt
58
OWM [XXXXX]
58
OWN [XXXXX]
58
Ptt [0-255]
58
Pwr [20-37]
59
Radio [Auto/A/B]
59
Repeater [On/Off]
59
Rssi, Rssi
60
Rtu [On/Off/0-80]
60
RX [XXX]
60
RXLEVEL [-20 to +3]
61
RXMUTE [On/Off/Time in Msec]
61
Rxpad [On/Off]
61
Rxtot [None, 1-1440]
61
Scd [0-255]
62
Ser
62
Show [DC/Pwr/Current/Radio]
62
Snr, Snr
63
Srev
63
Standby [On/Off]
64
Stat
64
Temp
65
TIME [Hh:MM:ss]
65
Tot [On/Off, 1-255]
66
TX [XXXX]
66
Txgain [On/Off]
67
TXLEVEL [-20 to +3, AUTO]
67
Unit [10000-65000]
67
Configuration and Programming Using the Front Panel
68
Programming and Control Buttons
70
Navigating through the Front Panel Screens
70
Switching the Front Panel Display to Configuration Mode
71
Use of Control Buttons in Configuration Mode
71
Changing Radio Functions
72
Screen Descriptions
72
Group 1-Startup Screen and Menu Directory
72
Group 2-Configuration Screens
72
Group 3-Diagnostic Screens
73
Group 4-Event Log
73
Display Contrast
83
Set Time
85
Set Date
85
7 Local & Network-Wide Problem Solving
87
Local Problem-Solving
88
Front Panel Leds
88
Chassis-Mounted Leds
89
Problem Solving Using a Connected PC
90
Problem Solving Using the Front Panel Display
90
System Bench Testing Set-Up
91
Performing Network-Wide Radio Diagnostics
92
8 Replacing Assemblies
94
Transceiver Board and Power Supply Assemblies
94
Installation & Removal of Backup Battery (P/N 28-1575Axx)
95
Front Panel
96
Operating Frequency Change Considerations
97
MDS 4790-400 Mhz Notch-Type Duplexers
98
MDS 9790-Bandpass-Type Duplexers
98
MDS 4790/9790 Simplex Radios-With Antenna Switch Modules
99
MDS 4790/970-Front End Helical Coil Alignment
99
Testing and Removing an Internal Duplexer
99
Testing
99
Removing the Internal Duplexer
100
Testing and Removing the Antenna Switch Module
101
Testing
101
Removing the Antenna Switch
102
Cooling Fan Maintenance
103
9 Radio Software Upgrades
103
Obtaining New Code
103
Preparing for Download
104
Downloading New Code-Procedure
104
10 Technical Reference
105
Technical Specifications
105
RF Propagation Planning
107
Fresnel Zone Clearance
108
Earth Curvature
108
Fade Margins
109
Calculating Path Loss
110
Formulas for System Planning
110
Free Space Path Loss
110
Fresnel Zone Boundary
110
Theoretical Signal Strength
110
Probability of System Fading
110
Dbm-Volts-Watts Conversion Chart
111
In Case of Difficulty
123
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