TM 11-5820-803-12
Table 3-3. Self-Test Initial Switch Settings.
Control section
Switch
Position
FAULT
ALARM
OFF
TRANSMIT
INPUT DATA RATE
Same as operational INPUT DATA RATE (table 3-2)
ERROR CODING
NONE
SOURCE
TEST
MONITOR
TEST
1
METER
OFF
MANUAL/OFF/AUTO
AUTO
RECEIVE
SYMBOL RATE
Same as operational INPUT DATA RATE (table 3-2)
ERROR CODING
NONE
POWER
ON/off
ON
STD/CLK/ICF
Same as operational setting (table 3-2)
Behind upper front panel
DIFF ENCODE
ON
DIFF ENCODE
ON
Table 3-4. Self-Test Procedure.
(Control section)
Setting
Indicator
Normal indication
Corrective action
Switch
...................................
.....................................
POWER ON
Illuminated
Replace lamp or fuse
(FAULT) ALARM
Hold in RESET
All
FAULT
Illuminated
Replace lamp
indicators
Audible ALARM
Tone
Organizational
Maintenance (OM)
(FAULT) ALARM
Release to OFF
Audible ALARM
No tone
OM
TEMPERATURE
Extinguished
OM
(MONITOR) METER
+5
Meter
46 TO 64
OM
-5
Meter
46 TO 64
OM
+15
Meter
46 TO 54
OM
-16
Meter
46 TO 54
OM
XMIT SYNTH
Meter
40 TO 60
OM
RCV SYNTH
Meter
40 TO 60
OM
AGC
Meter
72 TO 92*
OM
VCXO
Meter
40 TO 60
OM
ERROR COUNT
.........................
..................................... ........................................
(MONITOR) TEST
1
Meter
0
OM
All
MONITOR
Illuminated
indicators
2
Same as above
No change
OM
3
Same as above
No change
OM
4
Same as above
No change
OM
5
Same as above
No change
OM
6
Same as above
No change
OM
7
Same as above
No change
OM
(MONITOR) METER
SIG/NOISE
Meter
0
OM
All
MONITOR
DATA B extinguished
indicators
others illuminated
(FAULT) ALARM
RESET (momentary)
All
FAULT
Extinguished
OM
indicators
*35 to 55 if A2A1A1A2AS1 is in position 2 ( to -655 dBm input power range). Refer to paragraph 2-20a to determine installation requirements.
Table 3-5. Coder/Decoder Test Procedure.
(Control section)
Setting
Indicator
Normal indication
Corrective action
Switch
(MONITOR) TEST
7
...........................................
..................................
(MONITOR) METER
ERROR COUNT
Meter
0
OM
All MONITOR indicators -
Illuminated
OM
FAULT ALARM
RESET (momentary)
All FAULT indicators
Extinguished
OM
3-6
