Pitch Axis Actuator Simulator Circuit.

C1, TM 11-6625-646-15

meter should indicate a minimum of +1 volt. The vtvm

(15) Adjust the test setup variable resistor until

should indicate a minimum of 1 volt.

the ROLL AXIS meter indicates .5 in either direction.

The vtvm should indicate between 0.45 and 0.55 volt.

(12) Adjust the test setup variable resistor until

the dc voltmeter indicates 0.

(16) Adjust the test setup variable resistor until

the dc voltmeter indicates 0.

(13) Reverse the test setup connections at

TEST POINTS Y and a.

(17) Set the 115V 400- POWER switch to off

(down) position. Disconnect the test connections from

(14) Adjust the test setup variable resistor until

TEST POINTS R, T, V, W, and X.

the dc voltmeter indicates 0.1 volt. The PITCH AXIS

meter should indicate a minimum of -1 volt. The vtvm

(18) If any indication is not as specified, take

should indicate a minimum of 1 volt.

corrective action and repeat the applicable steps.

(15) Adjust the test setup variable resistor until

(19) Set the AXES METERS READ switch to

the PITCH AXIS meter indicates .5 in either direction.

OPEN LOOP.

The vtvm should indicate between 0.45 and 0.55 volt.

c. Pitch Axis Actuator Simulator Circuit.

(16) Adjust the test setup variable resistor until

(1) Connect the ac power supply to TEST

the dc voltmeter indicates 0.

POINTS c (line phase) and e.

(17) Set the 115V 400 ~ POWER switch to off

(2) Connect the test setup to TEST POINTS

(down) position. Disconnect the test connections from

a and Y. (fig. 7-1).

TEST POINTS Y, a, c, d, and e.

(3) Connect the vtvm between TEST

(18) If any indication is not as specified, take

POINTS C (ground) and d.

corrective action and repeat the applicable steps.

(4) Adjust the dc power supply for a 12-volt

(19) Operate the AXES METERS READ switch

output.

to OPEN LOOP.

(5) Set the 115V 400- POWER switch to on

d. Yaw Axis Actuator Simulator Circuit.

(up) position.

(1) Connect the ac power supply to TEST

(6) Adjust the test setup variable resistor until

POINTS M and P (line phase).

the dc voltmeter indicates +5. The PITCH AXIS meter

(2) Connect the test setup to TEST POINTS

should indicate between +4.5 and +5.5 volts.

K and H (fig. 7-1).

(7) Adjust the test setup variable resistor until

(3) Connect the vtvm between TEST

the dc voltmeter indicates 0.

POINTS C (ground) and L.

(8) Adjust the ac supply for a 2.5-volt output.

(4) Adjust the dc power supply for a 12-volt

(9) Set the AXES METERS READ switch to

output.

CLOSED LOOP.

(5) Set the 115V 400 ~ POWER switch to on

(up) position.

NOTE

(6) Adjust the test setup variable resistor until

The PITCH AXIS meter may indicate

the de voltmeter indicates +5. The YAW AXIS meter

off scale (hardover).

Allow 30

should indicate between -4.5 and -5.5 volts.

seconds for the circuits to stabilize.

(7) Adjust the test setup variable resistor until

the dc voltmeter indicates 0.

(10) Check that the PITCH AXIS meter

(8) Adjust the ac supply for a 2.5-volt output.

indicates 0 1 scale division. If it does not, adjust

resistor R609 (fig. 6-7) on the pitch actuator simulator

(9) Set the AXES METERS READ switch to

card for 0 on the meter.

CLOSED LOOP.

(11) Adjust the test setup variable resistor until

the dc voltmeter indicates 0.1 volt. The PITCH AXIS