TM 5-6350-280-23&P
Table 4-2. Troubleshooting Table - continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. REMOTE AREA COM-FAIL - continued.
TEST EQUIPMENT
DUAL TRACE OSCILLOSCOPE
ONE TO ONE PROBE WITH
GROUND CONNECTED TO TP7
SETTINGS
TP5
TP8
DISPLAY MODE:
A or B
A or B
SYNC:
INTERNAL
INTERNAL
INPUT COUPLING
AC
DC
VOLTS PER DIVISION
2 V
2 V DC
TIME PER DIVISION
.2 MILLISECOND
0.1 SECONDS
NOTE 1
WAVEFORM SHIFTS BETWEEN TWO FREQUENCIES, 1,070 Hz AND 1,270 Hz. PERIOD WILL BE .93 TO
.79 ms. VOLTAGE WILL BE BETWEEN .25 AND .8 VOLTS PEAK TO PEAK.
NOTE 2
BASELINE DATA FLASHING ON AND OFF IS DIGITAL DATA (ONE'S AND ZERO'S)THAT IS DEPENDENT
ON THE TRANSMISSION SIGNALS FROM THE REMOTE AREAS. THE DIGITAL DATA REPRESENTS
THE AREA'S STATUS. 8 VOLTS PEAK TO PEAK.
Figure 4-2. Data Receiver CCA Signals.
4-6
