Section IV. OPERATING INSTRUCTIONS

C1, TM 11-6625-646-15

SECTION IV

OPERATING INSTRUCTIONS

tested, connect adapter 114V3058-1 between the test

4-1. General

set J60 SAS receptacle and test cable A02VS309-1.

4-2. This section contains operating instructions for the

test set. Functions and descriptions of the controls,

4-6. SAS Amplifier Testing Procedures

indicators, and receptacles are given in tables 4-1, 4-2,

and 4-3. Numbers in parentheses refer to items on

4-7. To test a SAS amplifier, perform the preliminary

figure 4-1. Reference designations are given to relate

procedures in paragraph 4-4. Then proceed as directed

these components to the schematic diagrams, figures 1-

in the paragraphs that follow. The results of some SAS

5 and 1-7. Figure 4-1 illustrates the front panel of the

amplifier tests are not included in this manual since the

test set. Aircraft Displacement Simulator AN/ASM-120

information is not the same for all models and certain

or equivalent, having an operating range of 1.5 to 18

values are subject to change. For this information, refer

per second is required for yaw, roll, and pitch channel

to TM 11-1680-201-35. Some results not included are

tests on SAS amplifiers. A multimeter, TS-352/U or

the following:

equivalent, and a capacitance, inductance, resistance

a. Test voltages not directly related to power

bridge, AN/URM-90 or equivalent, are also required for

voltage levels.

calibration card tests.

b. Amplifier positioning and channel rate of turn

tests which require the use of the rate table.

4-3. SAS Component Tests

c. Channel output during open and closed loop

testing.

4-4. Preliminary Procedures

d. Test airspeed and test sideslip pressures.

e. Yaw channel output during airspeed and sideslip

4-5. (fig. 4-2). Test a SAS amplifier or printed-wiring

channel tests.

circuit board as follows:

a. Release the turnlock fasteners and open the

4-8. Channel Tests Using a Rate Table

hinged door in the test set cover.

Check channel response to rate gyro signals as follows:

b. Set the POWER and PUMP switches to off

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

(down) positions.

Check that the FUNCTION switch is at DC. Check that

c. Remove the test cables and hose assemblies

the AXES METERS READ switch is at CLOSED LOOP.

from the test set cover. Remove the adapter assembly

Check that the PEDAL POT variable resistor is in the

from the -8 test set.

center of its operating range (straight up).

d. Connect power cable A02VS309-3 between the

b. Position the SAS amplifier on the rate table so it

115V 400 ~ test set receptacle and a 115-volt 400-cycle

turns about the sensitive axis of the channel being

ac source.

tested.

e. Connect test cable A02VS309-1 between the

test set J60 SAS receptacle and the SAS amplifier

receptacle. If SAS amplifier 114E3030-49 is being