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 225 of 334
ARMY TM 9-1290-365-24&P
D.5.11.2 PREPARATION FOR TEST. The test setup is shown in Figure D-21. Figures D-22. and D-23.
are detailed illustrations of the special tester.
a. Remove the UUT from higher assembly lAW para. D.4.6.6.
b. Set attenuator on the test fixture to 100dB.
c. Energize and adjust DC power supply to measure +18 ± 0.2 Vdc. Deenergize DC power supply.
d. Energize function generator. Set the function generator output to 50± 5KHz, sine wave, 2.5 ± 0.3
Vp-p. Deenergize function generator.
e. Energize scope. Set the scope as follows:
(1)
Input Scale: 5V/cm both channels
(2)
Time Scale: 10üsec/cm
(3)
Sync Mode: Auto
(4)
Display Mode: Alt
f.
Energize the frequency counter.
g. Before connecting the UUT to the test setup, verify that the power supply is deenergized.
h. Connect the UUT to the test setup lAW Figure D-21 as follows.
(1) Connect lead E1 (red) to test point E1 on UUT
(2) Connect lead E2 (black) to test point E2 on UUT
(3) Connect lead E3 (blue) to test point E3 on UUT
(4) Connect lead E4 (white) to test point E4 on UUT
(5) Connect lead E5 (yellow) to test point E5 on UUT
(5) Connect lead E6 (green) to test point E6 on UUT
D.5.11.3 FUNCTIONAL TEST.
D.5.1 1.3.1 Power source and voltage circuit test. Refer to para. D.5.12.1 for troubleshooting procedures.
a. Energize power supply.
b. Measure with DMM voltage between CR5/cathode and test point E2 (GND). Verify voltage is
15±lVdc.
c. Measure with DMM voltage between C25(+) and test point E2(GND). Verify voltage is 9± 1Vdc.
D.5.11.3.2 Functionality Test. Refer to para. D.5.1 2.2 for troubleshooting procedures.
a. Set switch S1 on test set to position E5. Observe on oscilloscope that a sine wave is present on
both channels.
b. Measure signal characteristics of both sine waves.
c. Verify on channel 2 that amplitude at test point E5 is greater than 2.5Vp-p.
d. Verify on channel 1 that amplitude at test point E6 is greater than 2.5Vp-p.
e. Observe that signals at test points E5 and E6 are in reverse polarity to each other.
D.5.11.3.3 Maximum Output Measurement Saturation Test. Refer to para. D.5.1 2.3 for troubleshooting
procedures.
a. Disconnect clip E5 (yellow) from test point E5 of UUT. Channel 1 remains at E6 (green) clip.
b. On test set, set switch S1 to SIGNAL GEN.
D-55
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