TM9-4935-481-14-1
Table 3-11. DMS-D Performance Test-Continued
Table 3-11. DMS-D Performance Test-Continued
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
1228
Wait at least 4 minutes for oscillator stabilization.
1211
PD
Release the READ switch.
1230
DMM
Observe a reading of +1.001 to +1.069 Vdc.
1212
OSC
Adjust the display as required so that 1/2 of the waveform is
Replace card A21. Check A21 pins
displayed.
4, 3 and 8.
1213
OSC
Observe the period of the wavef0 to be 90 to 110 msec.
1231
PD
Release the READ switch.
(137)
1232
ITP
INTERNAL TEST switch to 5.
1214
TP
FREQ(HZ) switch to 10.0.
1233
PD
HORIZ/REF/VERT switch to VERT.
1215
Wait at least 4 minutes for oscillator stabilization.
1234
PD
Actuate and hold READ switch.
1216
PD
Actuate and hold READ switch.
1235
DMM
Observe a reading of +0.2811 to +0.3243 Vdc.
1217
DMM
Observe a reading of +2.955 to +3.045 Vdc.
Replace card A21. Check A21
(138)
pins 4, 6 and 8.
1218
PD
Release the READ switch.
1236
PD
Release the READ switch.
1219
OSC
Adjust the display as required so that 1/2 of the waveform is
displayed.
Sine Delay Check
1220
OSC
Observe the period of the waveform to be 45 to 55 msec.
1237
Return all switches to the initial switch settings, leaving the
MAIN POWER and DMS switches ON.
1221
PD
HORIZ/REF/VERT switch to HORIZ.
1238
MCP
SELECTOR C switch to H22.
1222
ITP
INTERNAL TEST switch to 3.
1239
MCP
Connect the 10275938 adapter to J6.
1223
PD
Actuate and hold READ switch.
1240
OSC
Connect a BNC tee to the A INPUT.
1224
[)MM
Observe a reading of +0.0660 to +0.0840 Vdc.
1241
OSC
Connect a cable from the BNC tee to the MAIN, TRIG INPUT 1.
(139)
1242
MCP
Connect a cable from J15 to the B[IC tee.
1225
MCP
1243
MCP
Connec a cable to the oscilloscope CHANNEL B INPUT and J6-70.
t
1244
OSC
TIME/DIV switch to .2 MSEC.
Horizontal and Vertical Derate Check
1245
OSC
- + pushbutton switch to +.
1226
ITP
INTERNAL TEST switch to 40
1227
TP
MODE switch to FREQ
3-121