TM-9-1290-365-24&P Technical and Parts Manual for Paladin Muzzle Velocity System M93 Upgraded Download
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