Oscillator Frequency.

TB 55-4920-343-35/1

(3) Set S1 switch on test instrument to ON. Test instrument simulator meter should read between 0.17 and

0.29 ma to the right.

(4) Set S1 switch on test instrument to OFF.

(5) Set decade resistor (A3a) to read 2 K ohms.

(6) Set S1 switch on test instrument to ON. Test instrument simulator meter should read between .44 ma to

F.S to the right.

(7) Set S1 switch to OFF.

(8) Disconnect electrical lead from jack J2 pin H and connect to jack J2 pin G on test instrument.

(9) Set decade resistor (A3a) to read 1 K ohms.

(10) Set S1 switch to ON. Test instrument simulator meter should read between 0.17 and 0.29 ma to the left.

(11) Set S1 switch to OFF.

(12) Set decade resistor (A3a) to read 2 K ohms.

(13) Set S1 switch to ON. Test instrument simulator meter should read between .44ma to F.S. to the left.

b. Adjustments. No adjustments can be made.

4-6.

Oscillator Frequency.

a. Performance Check.

(1) Connect electronic counter (A4) to J2 pin E and J2 pin A (ground) on test instrument.

(2) Set S1 switch to ON.

(3) Set and hold S2 switch on test instrument to the RETRACT position. Electronic counter (A4) should

indicate between 10.2 and 13.8 Hz.

(4) Set S1 switch to OFF.

b. Adjustments. No adjustments can be made.

4-7.

Test Signal.

a. Performance Check.

(1) Connect voltmeter (AS) to J2 pin J and J2 pin A (ground) on test instrument.

(2) Set voltmeter (AS) range selector to 10 VAC p-p position.

(3) Set S1 switch to ON.