GE MDS 4790 Series Installation & Operation Manual page 120

diagnostics using LED indicators 80
diagnostics, local 80–84
feedline installation 17
installation 10–26
installation planning 6–10
mounting the radio 11
navigating LCD screens 62
post-installation checks 26
start-up and operation 26–63
toggle between display-only and configuration modes 63
Programming radio as root or node 84
PTT command (set/display push-to-talk delay) 50
Push-to-Talk Delay screen 70
PWR command (set/display RF forward output power) 51
R
Radio
accessories 5
description 1
display model number (PC command) 48
display serial number (SER command) 54
display software revision number (Software Revision
screen) 78
display transmitter state (LCD screen) 78
illustrated 1
key features 4
model number codes 6
removing antenna switch module 93
removing internal duplexer 89, 93
removing or re-installing front panel 88
set date (LCD screen) 77
set time (LCD screen) 77
set/display active transceiver board (LCD screen) 78
set/display address (Unit Address screen) 73
set/display address (UNIT command) 59
using LCD to set functions 64
RADIO command (set/display active transceiver board) 51
Radio Selection screen 78
Receive attenuator, enable/disable (Receive Pad screen) 75
Receive Frequency screen 69
Receive Level screen 75
Receive Pad screen 75
Receive Signal Strength screen 77
Receiver specifications 98
Redundancy 2
Removing
antenna switch module 93
Antenna switch module, illustrated 94
assemblies 86
front panel 88
front panel, illustrated 89
internal duplexer 89, 93
internal duplexer, illustrated 93
transceiver boards, about 86
REPEATER command (enable/disable repeater configuration)
51
Repeater Mode screen 71
Repeater operation 3
illustrated 4
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set/display (Repeater Mode screen) 71
Replacing
assemblies 86
transceiver board 86
Requirements for installation 6
RF propagation planning 99
RSSI
display (LCD screen) 77
maximizing 26
theoretical signal strength, formula 102
RSSI, RSSI! commands (display received signal strength indi-
cation) 52
RTU (Remote Terminal Unit)
command (enable/disable internal RTU) 52
internal simulator 83
RX ALR LED 29
RX command (set/display receive frequency) 52
RX Timeout screen 71
RX timeout, set/display (RX Timeout screen) 71
RXLEVEL command (set/display audio receive level) 53
RXPAD command (enable/disable receive attenuator) 53
RXTOT command 53
S
S/N Ratio screen 78
SCD command (set/display soft carrier de-key delay) 54
Screens
Access Level screen 68
Active Radio Status 77
Alarm Masks 75
Backlight Intensity 76
Baud Rate/Format 70
Clear Logs 79
Clear-to-Send Delay 70
configuration 68–77
configuration, listed 64
Continuous Keying 72
Data Buffering 74
diagnostic, listed 65
Display Contrast 75
displaying individual 63
Emphasis 70
Event Log 79
Key On Data 73
main 68
Manual Key 72
Menu Directory screen 68
menu directory, illustrated 63
menu flowchart 61
Modem 69
Push-to-Talk Delay 70
Radio Selection 78
Receive Frequency 69
Receive Level 75
Receive Pad 75
Receive Signal Strength 77
Repeater Mode 71
RX Timeout 71
S/N Ratio 78
MDS 05-3438A01, Rev. F