Figure 4-2. Test setup.

C1, TM 11-6625-646-15

LOOP. Check that the ASE MODE switch is at OFF.

i. If no further tests are to be performed, stop the

Check that the PEDAL POT variable resistor is in the

center of its operating range (straight up).

b. Connect the test set S, P, L, and R connections

4-10. ASE Mode Tests

to the corresponding SAS amplifier connections. Use

Not applicable to CH-47 SAS amplifiers.

the hose assemblies and quick-disconnect couplings

furnished with the test set. Connect power cable

4-11. Excitation Voltage Tests

A02VS309-2 between the test set 115V 60~ and a 115-

To check the excitation voltage levels for the link

volt 60-cycle ac source.

feedback component, turn the FUNCTION switch to

c. Set; the PUMP switch to on (up) position.

each POT EXCITATION position. Observe that the

d. Adjust the DIFF PRESS REG valve until the

FUNCTION meter indicates in the green at each

position.

required direction and magnitude of simulated sideslip is

indicated on the SIDESLIP indicator.

4-12. Interlock Voltage Test

e. Observe the output of the sideslip circuit on the

To measure the SAS amplifier half-gain interlock

YAW AXIS meter.

voltage, turn the FUNCTION switch to INTLK. Observe

f. Adjust the AIRSPEED valve until the test

that the FUNCTION meter indicates in the green.

airspeed is indicated on the AIRSPEED indicator.

g. Observe that the YAW AXIS meter indication is

4-13. Pedal Position Variable Resistor Feedback

reduced as required by operation of the airspeed

Voltage Test

circuits.

Not applicable to CH-47 SAS amplifiers.

h. Set the PUMP switch to off (down) position.

Disconnect the hose assemblies from the S, P, L, and R

4-14. Internal Test Circuits

connections. Stow the hose assemblies in the test set

To check the SAS amplifier test circuits, proceed as

cover.

follows:

Figure 4-2. Test setup.