Comtech EF Data SMS-451 - Manual (Page 48)

SMS-451 Satellite Switch Revision 0
Operation MN/SMS451.IOM
3-2
3.2 SMS-451A/E Front Panel
The front panel ( Figure 3-1) has indicators to show the online status of the prime and
backup modems. Indicators also show if a fault is present in the prime or backup
modems.
S W I T C H S T A T U S
RE M O T E L O C A L P W R 1
P W R 2
R E M
L O C
DEM ODULATOR
MANUAL ON-LINE FAULT
M ODULATOR
MANUAL ON-LINE FAULT
A A A
B B
AUTO
A B B
AUTO
A B B
A
SMS-451A
SATELLITE MODEM SWITCH
Figure 3-1. SMS-451A Front Panel View
MANUAL
AUTO
ON-LINE FAULT
MODULATOR
A
A A
B B B
MANUAL
AUTO
ON-LINE FAULT
DEMODULATOR
A
A A
B B B
REM O T E
R E M
L O C A L P W R 1
P W R 2
SWITCH STATUS
L O C
SMS-451E ECL MODEM
PROTECTION SWITCH
Figure 3-1A. SMS-451E Front Panel
3.2.1 SMS-451A/E Front Panel Indicators
The following is a list of front panel indicator functions and their colors.
Function Color
PS1 Green
PS2 Green
Local Yellow
Remote Yellow
Demodulator Fault A
Red
Demodulator Fault B Red
Demodulator A Online Green
Demodulator B Online Green
Demodulator Auto/Manual Yellow
Modulator Fault A Red
Modulator Fault B Red
Modulator A Online Green
Modulator B Online Green
Modulator Auto/Manual Yellow
3.2.2 SMS-451A/E Front Panel Switches
The front panel has the following switches:
• Local/Remote Control
• Demodulator Online A/Auto/B
• Modulator Online A/Auto/B