GE MDS 4790 Series Installation & Operation Manual page 118

clearance 100
obstructions, illustrated 100
Front panel
controls, illustrated 62
ENTER button 62
ESCAPE button 62
illustrated 28
indicators 27
LCD display 29
left/right arrow buttons 62
removing 13
removing or re-installing 88
removing, illustrated 89
up/down arrow buttons 62
H
Hardware, display revision level (HREV command) 46
Hexadecimal
alarm code display (Alarm Masks screen) 75
summarize alarms in (ALARM command) 37
use to classify events as major alarms (AMASK com-
mand) 40
use to classify events as major alarms (NMASK com-
mand) 49
values for major alarm conditions 38
HREV command (display hardware revision level) 46
I
I/O ALR LED 29
Illustrations
antenna height vs. theoretical radio horizon 101
Antenna switch module removal 94
audio connections 22
bench test setup 84
data connector 23
DC power supply 14, 15
diagnostics port J1 pin connections 22
Fresnel zone 100
front panel controls and indicators 28
front panel removal 13, 89
internal duplexer removal 93
LCD menu flowchart 61
LCD start-up screen 29
LED indicators, chassis mounted 81
LED indicators, front panel 28, 80
main transceiver and power supply removal 87
MAS network 3
MDS 4790A master station 1
mounting dimensions and bracket details 12
network-wide diagnostics 85
network-wide remote diagnostics setup 85
PC connected to the master station 30
PC diagnostic port cable 31
programming and control buttons 62
rear panel 18
repeater and polling-remote network 4
RJ-11 to DB-9 adapter cable 86
shipment contents 11
station arrangement 6
I-4 MDS 4790/9790 Series I/O Guide
RSPSupply - 1-888-532-2706 - www.RSPSupply.com
http://www.RSPSupply.com/p-8457-MDS-UP-9790X.aspx
INIT command (reset customer-programmable settings) 46
InSite software, using to perform remote diagnostics 84
Installation
alarm contacts 24
antenna and feedline selection 9
audio connector 22
battery power, connecting 15
data connector 22
diagnostics port connection 21
feedline 17
interface wiring connections 18
interference 8
mounting 11
on-the-air test 7
planning 6–10
primary power, connecting 13
procedures 10–26
rack mounting 12
remote front panel mounting 12
requirements 6
site selection 7
tabletop mounting 12
terrain and signal strength 7
Installation planning
antenna height vs. theoretical radio horizon, illustrated
101
calculating path loss 101
earth curvature 100
fade margins 101
formulas for system planning 101
Fresnel zone clearance 100
Fresnel zone, illustrated 100
RF propagation 99
Internal duplexer
removing or re-installing 89, 93
removing, illustrated 93
K
KEY command (activate transmitter). See also DKEY com-
mand 47
Key On Data screen 73
Keying
activate transmitter (KEY command). See also DKEY
command 47
activate transmitter (Manual Key screen) 72
de-key transmitter (DKEY command). See also KEY
command 45
de-key transmitter (Manual Key screen) 72
enable/disable continuous (CKEY command) 43
set/display mode (continuous, DCE) (Continuous Keying
screen) 72
set/display mode (key-on-data, key-on-RTS) (Key On
Data screen) 73
L
LCD 29
Backlight Intensity screen 76
diagnostics commands, table 67
Display Contrast screen 75
MDS 05-3438A01, Rev. F