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 264 of 334

ARMY TM 9-1290-365-24&P

e.

Turn on ACCL. switch.

f.

Verify voltage measure on oscilloscope CHAN 2 DC mode is 5 ± 0.5 Vdc.

g.

Turn on function generator and set to square wave 5 ± 0.3 Vp-p, 2.6 ± 0.2Vdc offset, and 1±0.1KHz.

h.

Measure the two signals on oscilloscope CHAN 1 and CHAN 2 and compare the signals. See Figure

D-36. Verify delay time between channels is 77±17sec.

CHAN 1

CHAN 2

T

129-85

Figure D-36. Signal Shape on Oscilloscope

D.7.1 2.5 DOPPLER INPUT CIRCUIT TEST. Refer to para. D.7.13.3 for troubleshooting procedures.

a. Set switch S1 to position D.SIN.

b. Set switch S4 to position DOPP.

c. Set the function generator to sine wave amplitude to 400±1 10mVp-p, at frequency 10 ± 0.5KHz.

d. Measure the signal on oscilloscope CHAN 2. Verify the signal is 400± 10mVp-p.

e. Set switch S1 to position DOP. OUT.

f.

Measure the signal on oscilloscope CHAN2. Verify the signal is square wave:

High level

5 ± 0.5 Vdc

Low level

-1 ±0.3Vdc

Frequency

10 ± 0.5K Hz 1 100ü.sec

g. Set switch S1 to position D.TRIG.

h. Measure the signal on oscilloscope CHAN 2. Verify there is -1 ± 0.5 Vdc.

i.

Set the function generator to 40 ± 0.5KHz and amplitude 8 ± 0.5 Vp-p.

j.

Measure the signal on oscilloscope CHAN 2. Verify pulses:

High level

4.5 ± 0.5 Vdc

Low level

-1 ±0.5Vdc

D-94