TM9-4935-481-14-1
C3
Table 3-13. TTS Maintenance Calibration-Continued
Table 3-13. TTS Maintenance Calibration-Continued
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
289
TTS
Momentarily actuate TEST START/STOP pushbutton (power off).
308
Using the IR monitor voltage calibration vs. temperature curve, figure
IR Source and Detector Normalization_(3Al), l1A81 (Part B).
record the IR monitor voltage calibration level.
290
OAC
Remove the rear cover on the OAC to expose the 3A1 card.
309
TTS
Adjust 3A1R8 to the value recorded in step 308 + 0.003 Vac.
291
OAF
Position and secure the detector holding fixture on the OAF.
292
Install radiometer detector filter into the radiometer optics.
DMM
293
OAF
Position and secure the radiometer optics in the detector holding fixture, aligning them in as straight
310
CIP
RUN/HOLD/OFF switch to HOLD.
a line as possible.
311
CIP
COUNTER INHIBIT(SEC) dial to 18.00.
294
RAD
Connect cable 1W6-P2 to the radiometer.
NOTE
295
MCP
Connect cable 1W6-Pl to J9.
Perform step 314 adjustment within 60 seconds of
296
RAD
Connect coax (special) between radiometer and radiometer optics.
step 313 action. If unable, actuate TTS TEST START/
297
MCP
DMM LO switch to SYS GND.
STOP switch (power off), wait 5 minutes then restart
298
MCP
SELECTOR A switch to G21.
test at step 300.
299
PPE
SEQUENCE switch to AUTO 2.
312
CIP
RUN/HOLD/OFF switch to RUN.
300
TTS
Momentarily actuate TEST START/STOP pushbutton (power on).
313
CIP
Observe INHIB lamp illuminated.
301
CIP
Observe INHIB lamp illuminated.
314
DMM
Adjust 3A1-R17 to the value recorded in step 308 + 0.003 Vac.
302
RAD
INPUT switch to COLL.
315
TTS
Momentarily actuate TEST START/STOP pushbutton (power off).
303
RAD
FULL SCALE switch to 10-9.
316
Disconnect and stow the radiometer optics and its cabling.
304
OAF
Adjust the AZIMUTH and ELEVATION knobs to obtain a maximum reading.
317
Reinstall the rear cover on the OAC reconnecting the thermistor
DM1
probe under one of the OAC mounting bolts, Ref. fig. 3-36.2.
305
DMM
Adjust 3A1-R13 to 0.1840 + 0.0010 Vac.
IR Source and Detector Normalization (3A1)
306
MCP
SELECTOR A switch to C24.
318
TTS
MODE switch to MISSILE CMD.
307
HCP
DMM LO switch to 2.
319
TTS
FREQUENCY dial to 49.
320
MCP
SELECTOR A switch to F23.
3-215
