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

NO. 1 and NO. 2 AS SW

Go on to indicate simulated airspeed is less than 60 knots. When indicators are

,60 KNOTS Indicators

on, 15 vdc can be monitored at NO. 1 and NO. 2 AS SW test points. When

indicators are off, -15 vdc can be monitored at NO. 1 and NO. 2 AS SW test

points.

No. 1 and No. 2 INTLK

Go on when No. 1 and No. 2 stabilator amplifiers are electrically connected

28 and No. 1 and No. 2

and helicopter dc electrical power is applied to stabilator system. Power that

INTLK 28 OS Indicators

turns on No. 1 INTLK 28 indicator also turns on No. 2 INTLK OS indicator.

Power that turns on No. 2 INTLK 28 indicator also turns on No. 1 INTLK 28

OS indicator. When indicators are on, 28 vdc can be monitored at No. 1 and

No. 2 INTLK 28 vdc test points.

ENGAGE 1 Indicator

Goes on to indicate stabilator control/auto flight control panel SAS 1 switch is

engaged and stability augmentation system (SAS) amplifier is installed. Power

is supplied from helicopter dc electrical power system, through engaged posi-

tion of control panel SAS 1 switch, through SAS amplifier, and through test

set connector J3 to ENGAGE 1 indicator. Pressing test set LAMP TEST but-

ton also causes ENGAGE 1 indicator to go on.

ENGAGE 2 Indicator

Goes on to indicate stabilator control/auto flight control panel SAS 2 switch is

engaged. Power is supplied from helicopter dc electrical power system, through

engaged position of control panel SAS 2 switch, and through test set connector

J3 to ENGAGE 2 indicator. Pressing test set LAMP TEST button also causes

ENGAGE 2 indicator to go on.

AIRSPEED SWITCH

Provides capability for simulating and visual monitoring of airspeed logic com-

Simulator

mands. These commands are used for testing coordinated turn function of SAS

amplifier yaw channel.

,60 KNOTS Indicator

Goes on to indicate that simulated or monitored airspeed is less than 60 knots.

When mode selector control is placed to ,60 KNOTS, 15 vdc from test set

power supply controls circuitry in test set, allowing 28 vdc from test set 28

VDC SAS circuit breaker to turn on indicator. When mode selector control is

placed to ,60 KNOTS, 15 vdc is also supplied through test set connector J3

to SAS amplifier. When mode selector control is placed to NORM, No. 1 sta-

bilator amplifier airspeed switch logic is supplied through test set connector J3,

through NORM of mode selector switch, and back through connector J3 to

SAS amplifier. If No. 1 stabilator amplifier airspeed switch logic is +15 vdc,

,60 KNOTS indicator goes on. Pressing test set LAMP TEST button also

causes indicator to go on.

Mode Selector Control

NORM supplies No. 1 stabilator amplifier airspeed switch logic commands

through test set connector J3 to SAS amplifier. If logic command is 15 vdc

(,60 knots), circuitry in test set allows 28 vdc from test set 28 VDC SAS cir-

cuit breakers to turn on ,60 KNOTS indicator.,60 KNOTS supplies 15 vdc

from test set power supply through test set connector J3 to SAS amplifier. In

this position, 15 vdc also controls circuitry in test set allowing 28 vdc from

test set 28 VDC SAS circuit breaker to turn on ,60 KNOTS indicator. >60

KNOTS supplies -15 vdc from test set power supply through test set connec-

tor J3 to SAS amplifier.

2-25