TM 55-1520-240-23-9
11-277
BENCH TEST AFCS COMPUTER (AVIM)
(Continued)
11-277
506.
Set ANALOG SIGNALS AIRSPEED switch (35)
to 5. Read AC/DC VOLTMETER (10). Reading
shall be +1.27 to +1.51.
507.
Set DISCRETE SIGNALS LOG GEAR switch
(47) to 0.
508.
Set CONTROL PANEL SIMULATION AFCS
switch (12) to SELECT.
509.
Set DISCRETE SIGNALS VERT GYRO VALID
switch (16) to 1.
510.
Set ANALOG SIGNALS LONG CPT switch (58)
to 3. Wait 60 seconds.
511.
Set CIRCUIT SELECT A UNITS switch (18) to 1.
Read AC/DC VOLTMETER (10). Reading shall
be -0.200 to +0.200.
512.
Set METER RANGE switch (7) to 20V.
513.
Set CIRCUIT SELECT A UNITS switch (18) to
2. Read and record V1 AC/DC VOLTMETER
(10) reading.
514.
Set ANALOG SIGNALS LONG CPT switch (58)
to 2. Read and record V2 AC/DC VOLTMETER
(10) reading.
515.
Calculate V3. Subtract reading of step 514 from
reading of step 513 (V3 = V1 - V2). Result shall
be -3.79 to -5.13 volts.
516.
Set SERVO SIMULATION ACTUATOR
SIMULATION DASH switch (57) to GND.
517.
Set RESPONSE TEST TIME DELAY-SEC
switches (40) to 20.
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