TM9-4935-481-14-1
C3
Table 3-10. DMS-D Maintenance Calibration-Continued
Table 3-10. DMS-D Maintenance Calibration-Continued
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
STEP
UNIT
PROCEDURE CORRECTIVE ACTION
384
MCP
Disconnect the cable between J13 and the oscilloscope.
398
MCP
Remove the cable from J11 and connect it to J10.
399
MCP
Using jumper cables 11154430, short pins 13, 14 and 21 together
+ Continuous Amplitude (1143-1355)
on the adapter at J6.
385
MCP
DMM FUNCTION switch to VAC.
400
MCP
DMM FUNCTION switch to VDC.
386
MCP
DMM LO switch to EXT.
401
ITP
Set the INTERNAL TEST switch to 7 then alternate it between 6
387
MCP
DMM INPUT switch to DMM INPUT.
DMM
388
MCP
Remove the 1W14 cable from J17.
and 7 (always returning to 7) until a negative voltage is
389
MCP
Connect a 1W9 cable between J10 and J17.
indicated. Subtract this voltage from -0.2860 and record for
390
ITP
INTERNAL TEST switch to 8.
use in step 402.
391
MCP
Connect adapter 10275938 to J6.
402
ITP
Alternate the INTERNAL TEST switch between 6 and 7 (always return
DMM
CAUTION
to 7) until a positive voltage is indicated. Adjust A19-R40 to
Avoid grounding jumpers during installation or removal,
the value recorded in step 401 0.0005 (with opposite polarity).
403
DMM
Adjust A19-R42 to +0.1430 0.0005 Vdc.
392
MCP
Using jumper cables 11154430, short pins 13, 15 and 21 together
404
ITP
Alternate the INTERNAL TEST switch between 6 and 7 until a nega-
on adapter at J6.
DMM
tive voltage is indicated. Observe this reading is -0.1430 +
393
DMN
Adjust A21-R14 to 0.1011 + 0.0001 Vac.
0.0020 Vdc.
Check A1S33-D8 and A22 pins 24 and 28.
Check A22 pins 11 and 16.
405
ITP
INTERNAL TEST switch to OFF.
Continuous Amplitude (1143-1355)
406
MCP
Remove the cable between J10O and J17 and reconnect 1W14 to J17.
394
MCP
Disconnect the cable from J10 and connect it to J11.
407
MCP
Remove the jumper wires from the adapter and disconnect it from
395
DMM
Adjust A22-R25 to 0.1011 0.0001 Vac.
J6.
Check A22 pins 11 and 24 (+24 Vdc input).
Low Frequency Oscillator_(1143-1355)
396
Disconnect the jumper cables installed in step 392.
408
MCP
DMM INPUT switch to SEL A.
397
ITP
INTERNAL TEST switch to OFF.
409
MCP
DMM LO switch to SYS GND.
410
MCP
Adjust COMPARATOR THRESHOLD B control to +1.00OO0 + -0.002 Vdc.
Offset and Amplitude Cal. 286 mV P-P Square Wave (1143-1355)
DMM
3-72
