TM-9-1290-365-24-P
PALADIN MUZZLE VELOCITY SYSTEM M93 UPGRADED
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
OCTOBER 2000
TM-9-1290-365-24-P - Page 242 of 334
ARMY TM 9-1290-365-24&P
b. Verify voltage measure on DMM1 -15±0.2Vdc.
c. Measure the ripple with oscilloscope on AC mode. Verify ripple on oscilloscope is less than
50mVp-p.
D.6.11 .3.5 Doppler Power Output Test. Refer to para. D.6.12.5 for troubleshooting procedures.
a. Set switch S1 to position DOPP POWER.
b. Verify voltage measurement on DMM1 is18±0.2Vdc.
c. Measure the ripple with oscilloscope on AC mode. Verify ripple on oscilloscope is less than
5OmVp-p.
D.6.11.3.6 Shutdown Test. Refer to para. D.6.12.6 for troubleshooting procedures.
a. Momentarily push TOT.SD button. Verify voltage drops to 0 ± 0.1Vdc.
b. Using DMM, check that voltage on transistor Q2/gate is +5±1Vdc.
D.6.11.3.7 Reverse Polarity Protection Test. Refer to para. D.6.1 2.7 for troubleshooting procedures.
a. Measure 1 ± 0.3 Vdc over diode CR1.
b. Turn off power supply. Set switch S1 in position +5V.
c. Connect power supply in the opposite polarity:
Positive lead to PS -.
Negative lead to PS+.
d. Turn on power supply.
e. Verify voltage measurement in DMM1 is 0±0.10Vdc.
f.
Turn off power supply.
g. Connect power supply to correct polarity:
Positive lead to PS+.
Negative lead to PS -.
D.6.11.3.8 Operating Range Test. Refer to para. D.6.12.8 for troubleshooting procedures.
a. Turn on power supply.
b. Verify voltage measurement in DMM1 is 5±0.1Vdc.
c. Decrease voltage in power supply until voltage on DMM1 drops to 0±0.lVdc.
d. Set switch S1 to position PS. Verify the voltage measured on DMM1 is 15 ±1 Vdc.
e. Set switch S1 to position +5V.
f.
Increase voltage in power supply until voltage reads 5±0.1 Vdc.
g. Set switch Si to PS position. Verify the voltage measure on DMM1 is 16± lVdc.
h. Increase the power supply voltage up to 28±0.lVdc.
D.6.11.3.9 Short Circuit Test. Refer to para. D.6.12.9 for troubleshooting procedures.
a. Set switch S1 to position +5V.
b. Momentarily push +5V SHORTING button. Verify current in DMM2 drops to (0±0.1)mA.
c. Release +5V SHORTING button. Set switch S1 to position +5Vdc.
d. Verify voltage measured on DMM1 is 5±0.1 Vdc.
D.6.11.3.l0 Deenergize all test equipment.
END OF TEST
D-72
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