Table 2-1. Operator's Controls. (cont)

TM 1-6625-735-14

Table 2-1.

Operator's Controls. (Cont)

CONTROL, INDICA-

TOR, TEST POINT, OR

CONNECTOR

FUNCTION

CAUTION

The synchro transmitter control is a precision instrument that contains a slip

clutch and an 18 to 1 reduction mechanism between the outer (fine) dial and

the inner (coarse) dial. Use care to avoid over torquing this mechanism which

will result in activation of the slip clutch and loss of calibration between inner

and outer dials. Always use outer dial when adjusting to a specific degrees

setting. If it is necessary to use inner dial, MAKE SURE to turn dial using a

slow, smooth, continuous motion.

Mode Selector Control

NORM position supplies three-wire roll signal output of No. 2 vertical gyro

through test set connector J3 to SAS amplifier. This signal can be monitored at

X, Y, and Z SIM test points. SIM 1 supplies variable three-phase ac simulation

signal selected by synchro transmitter control through test set connector J3 to

SAS amplifier. This simulation signal can be monitored at X, Y, and Z SIM

test points. SIM 2 jumpers DC ROLL ATT and ROLL RATE TESTtest points

together and supplies variable three-phase ac simulation signal selected by syn-

chro transmitter control through test set connector J3 to SAS amplifier. This

simulation signal can be monitored at X, Y, and Z SIM test points.

TEST POINTS

Provide monitoring capability for functional conditions of SAS system opera-

tion.

P VALVE HI/LO Test

Provide monitoring capability for resistance and voltage measurements of pitch

Points

SAS valve in pitch/trim assembly.

R VALVE HI/LO Test

Provide monitoring capability for resistance and voltage measurements of roll

Points

SAS valve, in roll actuator.

Y VALVE HI/LO Test

Provide monitoring capability for resistance and voltage measurements of yaw

Points

SAS valve, in yaw boost servo.

Provides monitoring capability for amplified SAS amplifier yaw

TURN RATE COIL

MH-60K

rate gyro output.

HI/LO Test Points

DC ROLL ATT Test

Provides monitoring capability for transformed roll attitude from SAS ampli-

Point

fier. Three-wire simulation signal is supplied by test set ROLL ATT simulator

to SAS amplifier. SAS amplifier changes three-wire ac to two-wire dc. Ampli-

tude of dc (transformed roll attitude) is directly proportional to amount of

degrees of roll attitude displacement simulated by ROLL ATT simulator.

When ROLL ATT simulator mode selector control is placed to SIM 2, DC

ROLL ATT test point is connected to ROLL RATE TESTtest point.

ROLL RATE TEST Test

Provides monitoring capability for simulated SAS amplifier

MH-60K

Point

derived rate signal. When test set ROLL ATT simulator mode selector control

is placed to SIM 2, ROLL RATE TEST test point is connected to DC ROLL

ATT test point.

ROLL RATE Test Point

Provides monitoring capability for SAS amplifier derived rate sig-

MH-60K

nal.

2-27