GE MDS 4790 Series Installation & Operation Manual page 119

main screens 68
Menu Directory screen 68
menu flowchart 61
operating parameters commands, table 65
owner and radio information commands, table 67
screen descriptions 64–79
screens, navigation 62
set background brightness (Background Intensity screen)
76
set character intensity (Display Contrast screen) 75
start-up screen, illustrated 29
toggle between display-only and configuration modes 63
toggle between display-only and radio configuration
modes (Access Level screen) 68
use in problem solving 82
using to set radio functions 64
LEDs, chassis mounted 81
access to 81
explanation of 81, 82
illustrated 81
use in problem solving 81
LEDs, front panel 28
explanation of 29
illustrated 28, 80
normal indications 26
use in problem solving 80
Left/right arrow buttons 62
lightning protectors 5
LOG command (display/clear history of system events) 48
M
Maintenance
cooling fan 95
Manual Key screen 72
MAS operation 3
illustrated 3
Menu directory
displaying 63
displaying individual menu screens 63
illustrated 63
selecting a main menu item 63
selection arrow 62
Menu Directory screen 68
MODE command (display whether master or remote) 48
MODEL command (display radio model number) 48
Model number
display radio (PC command) 48
MODEM command (set signal type and modulation mode) 48
Modem screen 69
Modem, set/display internal speed (Modem screen) 69
Mounting the radio 11
dimensions and bracket details, illustrated 12
rack mount 12
remote front panel mount 12
tabletop mount 12
N
Network-wide diagnostics
enable/disable (DLINK command) 45
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enable/disable internal RTU (RTU command) 52
illustrated 85
set radio to root or node (DTYPE command) 46
set time to wait between characters (DMGAP command)
45
NMASK command (classify minor alarm events). See also
AMASK command 49
O
Operation 26–63
normal indications 26
start-up 26
OPT! command (list installed radio options 50
Options
list installed (OPT! command) 50
OWM command (set/display text message) 50
OWN command (set/display text message) 50
P
Path loss
calculating 101
free space, formula 102
PC
command summaries 32–37
commands, detailed descriptions 37–59, ??–73
connected to the master station, illustrated 30
connecting to the radio for diagnostics and control 30
diagnostic port cable, illustrated 31
Performance testing 83
Pinouts
set/display Pin 25 alarm output (ASENSE command) 41
Polling-remote operation 3
illustrated 4
Power
AC-powered units 14
connecting battery 15
connecting primary 13
DC power supply, illustrated 14, 15
DC-powered units 14
display actual RF output (SHOW command) 54
set/display forward output (PWR command) 51
supply assembly 86
supply removal, illustrated 87
Problem solving 79–95
at the local level 80
bench test setup 83
use of event log in 82
using LCD display 82
using LED indicators 80
Procedures
assembly replacement 86
bench test 83
changing radio functions 64
connecting battery power 15
connecting interface wiring 18
connecting PC for diagnostics 30
connecting primary power 13
diagnostics 79–95
diagnostics using event log 82
MDS 4790/9790 Series I/O Guide I-5