TM 9-4935-481-14-1
Table 3-11. DMS-D (10275000) Performance Test-Continued
Table 3-11. DMS-D Performance Test-Continued
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
31
OSC
Adjust TRIGGER level as required.
46
OSC
Observe a square wave switching from HI to LO at a one second repetition rate.
32
OSC
Observe a sine wave of 2.57 VP-P.
(10)
Replace card A21. Check A21 pins 46, 50, 53 and 58.
47
CIP
RUN/HOLD/OFF switch to HOLD.
33
MCP
Disconnect the cable between J14 and the Counter A INPUT.
48
OSC
Observe a steady HI or LO (no switching).
34
MCP
Disconnect the cable from J13 and connect it to J14.
(11)
35
OSC
Observe positive spikes > +1V zero to peak and negative spikes more negative than -1V zero to peak.
49
MCP
SELECTOR C switch to F5.
Replace card A9. Check A9 pins 2 and 7.
50
CIP
RUN/HOLD/OFF switch to RUN.
36
MCP
Disconnect the cable between J16 and Counter B INPUT.
51
CT
A INPUT switch to neg.
37
MCP
Disconnect the cable from J14 and connect it to J16.
52
CT
B INPUT switch to neg.
38
OSC
Observe positive spikes > +IV zero to peak and negative spikes more negative than -1V zero to peak.
53
CT
FUNCTION switch to TIME A B.
Replace card A9. Check A9 pins 9 and 20.
54
CT
Adjust DISPLAY control fully cw (to HOLD).
FREQ/TIME/MULT switch to 11.
Counter Inhibit
55
CT
0
39
Return all switches to the initial switch settings, leaving the MAIN POWER AND DMS switches ON.
56
MCP
Connect a 1W15 cable from J14 to the Counter A INPUT.
40
PPE
Momentarily actuate TEST START switch.
57
MCP
Connect a 1W15 cable from J16 to the Counter B INPUT.
41
MCP
SELECTOR B switch to E9.
58
CIP
COUNTER INHIBIT(SEC) dial to 0001.
42
MCP
SELECTOR C switch to G14.
59
CT
Momentarily depress RESET pushbutton.
43
PPE
FUNCTION TEST switch to INT-CLK.
60
PPE
Momentarily actuate TEST START switch.
44
TP
MODE switch to DN ERROR.
61
CT
Observe a reading of 9.90 to 10.10 msec.
45
MCP
Disconnect the cable from J16 and connect it to J15.
(12)
62
CIP
Set the COUNTER INHIBIT(SEC) dial to the positions indicated,
CT
PPE
momentarily depress the Counter RESET pushbutton, and then momentarily actuate the PPE, TEST
START switch and observe the Counter reading for each dial setting.
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