Table 4-2. Indicators

C1, TM 11-6625-646-15

Control

Function

Adapter Switch S6 (not readily acces-

Two-position 10-pole rotary switch. Position A adapts the test set cir-

sible) (14).

cults for H-46 or 107 SAS amplifiers. Position B adapts the test set

circuits for CH-47 SAS amplifiers. This switch is factory preset at B.

PUMP Switch S2 (21) ....................................... Three-ampere circuit breaker switch; connects and protects the 115-

volt 60-cycle ac circuit to the pump motor.

AXES METERS READ Switch S4 (4). .............. Double-pole toggle switch; controls relays on the actuator simulator

cards which connect the PITCH, ROLL, and YAW AXIS meters to

measure the SAS amplifier channel output to the extensible link

torque motor (solenoid) at OPEN LOOP and the simulated link feed-

back voltage at CLOSED LOOP.

AIRSPEED REG Valve (23) . ........................... Air valve. Controls the amount of air pressure to the SAS amplifier

airspeed sensor.

DIFF PRESS. REG Valve (18) ........................ Air valve. Controls the amount and direction of air pressure to the

SAS amplifier sideslip sensor.

ROLL GYRO SIMULATOR

Single-pole, 5-position rotary switch. Applied simulated roll signals to

Switch S101 on adapter

SAS amplifier 114E3030-49. The function of each switch position is

(114E5987-8 only).

as follows:

OFF-input to roll signal demodulator is short circuited.

R ROLL-applies 3right roll signal to SAS amplifier.

R LIM-applies maximum right roll signal to SAS amplifier.

L ROLL-applies 3left roll to SAS amplifier.

L LIM-applies maximum left roll signal to SAS amplifier.

GAIN SWITCH S101 on adapter

Spst toggle switch. Controls pitch axis gain, simulating ground/air

(114E5987-8 only).

operation when switch is set to GRD or AIR position respectively.

Table 4-2. Indicators

Indicator

Function

FUNCTION Meter M1 (2).................................. Zero-center voltmeter, calibrated -20 to +20, with a red sector be-

tween -8 and -12 and a green sector between +8 and +12;

indicates voltages at the circuit point selected by the FUNCTION

switch.

YAW AXIS Meter M2 (6) .................................. Zero-center voltmeter, calibrated -10 to +10 and -1 to +1; in-

dicates output of yaw channel or simulated extensible link feedback

(cancellation) voltage.

ROLL AXIS Meter M3 (9).................................. Zero-center voltmeter, calibrated -10 to +10 and -1 to +1; indicates

output of roll channel or simulated extensible link feedback (can-

cellation) voltage.

PITCH AXIS Meter M4 (10) .............................. Zero-center voltmeter, calibrated -10 to +10 and -1 to +1; indicates

output of pitch channel or simulated extensible link feedback (can-

cellation) voltage.

FULL GAIN Indicator Lamp DS2 (7) ................. Indicator lamp; goes out when the SAS amplifier gain control relay

operates.

POWER Indicator DS1 (11) .............................. Indicator lamp; lights when 400-cycle power is applied to the test set.

PUMP INDICATOR DS3 (20) ........................... Indicator lamp; lights when 60-cycle power is applied to the pump

motor.

AIRSPEED INDICATOR (24)............................ Air pressure indicator; calibrated 0 to 150 knots. Indicates the ram

air pressure applied to the pitot connection of the SAS amplifier.

DIFF. PRESSURE Indicator (15) ..................... Zero-center air pressure indicator; calibrated L15 to R15; indicates

the relative amount and direction of differential pressure connected

to the L and R sideslip connections of the SAS amplifier.