TM 55-1520-240-23-9
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BENCH TEST AFCS COMPUTER (AVIM)
(Continued)
11-277
TEST 4
PITCH AXIS TEST
NOTE
Perform preliminary procedure before
test. (Refer to TM 55-4920-430-13.)
109.
Set METER RANGE 7 switch to 2V.
110.
Set METER switch (6) to DC.
111.
Set CIRCUIT SELECT switch (8) to 20.
112.
Set CIRCUIT SELECT A/B SELECT switch (9)
to A.
113.
Set CIRCUIT SELECT A UNITS switch (18) to 7.
Read AC/DC VOLTMETER (10). Reading shall
be -0.475 to +0.475.
114.
Set RESPONSE TEST TIME DELAY-SEC
switches (40) to 0.05.
115.
Set METER switch (6) to AC.
116.
Set CIRCUIT SELECT B UNITS switch (11) to 6.
117.
Set CIRCUIT SELECT A/B SELECT switch (9)
to B.
118.
Set ANALOG SIGNALS GND-SIGNAL switch
(41) to SIGNAL.
119.
Adjust ANALOG SIGNALS PITCH ATT HSI HDG
potentiometer (POT). (42) towards 490 until
AC/DC VOLTMETER (10) reads 0.33.
120.
Set METER switch (6) to DC.
121.
Set RESPONSE TEST MODE switch (43) to ON
and METER RANGE switch (7) to 20V.
122.
Set CIRCUIT SELECT A/B SELECT switch (9)
to A.
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