TM 11-6625-828-45
4-14.
Test Data Summary
Personnel may find it convenient to arrange the checklist
in a manner similar to that shown be- low.
1. Preliminary Inspection
POWER-STANDBY switch:
STANDBYResistors R193, R194, R195, warm up.
POWER-STANDBY switch:
POWER Indicator lamp lights and tone generator runs.
2. Meter Zero Test
%M meter needle at ZERO SET line.
MODULATION switch to 30-. Press in %M
meter ZERO SET control, and then press in
RF meter needle to ZERO SET line.
RF meter ZERO SET control.
3. RF Unit Test
MC switch to A, trimming capacitors peaked.
Crystal A frequency within t 0.0005 me of rating.
MC switch to B, trimming capacitors peaked.
Crystal B frequency within +0,0005 mcof rating.
4. Power Supply Test
Ac input of 100 volts, 115 volts, and 130 volts.
Voltage at pin 3 of V114-880 to 420 volts
Voltage at positive end of C160-245 to 275 volts.
Voltage at positive end of C161-185 to 216 volts.
Current at MIC jack-1.45 to 1.? ma.
5. RF Meter Test
MODULATION switch to 30-.
Output of 0.8 to 1.2 volts.
RF meter needle at LEVEL SET line
RF LEVEL SET control fully clockwise
Output of more than 1.3 volts.
RF LEVEL SET control fully counterclock-
Output of less than 0.9 volts.
wise
6. %M Meter Test
MODULATION switch to 30-, 30- MOD
%M meter indicates at green line- percent
control fully counterclockwise, MC switch
+2.
to A
MODULATION switch to EXT, 9960- MOD
Output of 1.25 to 1.7 volts.
control fully counterclockwise
MODULATION switch to 30-, DEMOD con-
Output of 60 to 70 volts.
trol fully clockwise,
DEMOD control fully counterclockwise
Output of 20 to 30 volts.
MODULATION switch to 9960-,
Output of 60 to 70 volts.
DEMOD control fully clockwise,
DEMOD control fully counterclockwise
Output of 20 to 30 volts.
7. 30~Phase Angle Test
MODULATION switch to OMNI,
Course error less than 0.5.
OMNI TRACK switch to 0
OMNI TRACK switch to 180
Course error less than 0.60.
OMNI TRACK switch to 15
Course error less than 0.2.
8. 90-/150- Phase Test
MODULATION switch to AMP LOC (i
Check waveform for proper display.
9. Amp LOC Level Test
MODULATION switch to AMP LOC
Output of 0.019 to 0.021 volt.
Filter unit at 90-
Output of 0.019 to 0.021 volt.
Filter unit at 150-
4-23
