TM9-4935-481-14-1
C3
Table 3-14. TTS Performance Test-Continued
Table 3-14. TTS Performance Test-Continued
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
470
CIP
RUN/HOLD/OFF switch to RUN.
485
MCP
DMM FUNCTION switch to VAC.
471
CIP
Observe INHIB lamp illuminated.
486
PP
DMS switch to OFF.
472
CT
Observe a reading of 5338 to 5362 Hz.
487
Secure the holding fixture to the 1W4 cable.
Replace card 1A8. Check 1A8 pins 13
488
Position the 41AR radiometer optics in the holding fixture.
and 10.
(See fig. 1-1)
473
CIP
RUN/HOLD/OFF switch to HOLD.
489
RAD
Remove the cap on the detector cylinder.
474
CIP
COUNTER INHIBIT(SEC) dial to 14.51.
490
RAD
Screw the detector cylinder into the optics.
475
CIP
RUN/HOLD/OFF switch to RUN.
491
RAD
Connect 1W6-P2 to the control box.
476
CIP
Observe INHIB lamp illuminated.
492
MCP
Connect 1W6-P1 to J9.
477
CT
Observe a reading of 4638 to 4662 Hz.
493
RAD
Connect the radiometer coax between the control box and the optics.
Replace card 1A8. Check 1A8 pins
494
OAF
Position the AZIMUTH and ELEVATION knobs so the OAC is approxi-
13 and 9.
mately parallel with the OAF and in line with the saddle.
478
PPE
Momentarily actuate TEST START switch (power off).
495
RAD
INPUT switch to COLL.
479
CIP
RUN/HOLD/OFF switch to OFF.
496
RAD
FULL SCALE switch to 10-9.
IR Irradance Test
497
MCP
SELECTOR A switch to G21.
498
Disconnect 1W3 from 1W4.
NOTE
499
Disconnect OAF-P1 from OAC-3J1
Verify all OAF pots are fully ccw for the following steps.
500
Connect 1W5-P3 to 1W3-P1
480
MCP
SELECTOR A switch to Fl.
501
Connect 1W5-P2 to OAF-P1
481
MCP
DMM LO switch to SYS GND.
502
Connect lW5-P1 to OAC-3J1.
482
MCP
Adjust COMPARATOR THRESHOLD B control to +0.300 + 0.010 Vdc.
503
PP
DMS switch to ON. Momentarily actuate TEST START switch.
DMM
TP
483
MCP
SELECTOR A switch to F2.
504
TTS
Verify OAC eyepiece cover is on the eyepiece.
484
MCP
Adjust COMPARATOR THRESHOLD C control to +0.300 + 0.010 Ydc.
DMM
3-234
