Error Readout

TB 9-6625-1958-35

9. Error Readout

a. Performance Check

(1) Set MARKER (SEC) switch to 1m and pull out VARIABLE TIMING (OUT)

control.

(2) Adjust VARIABLE TIMING (OUT) control fully cw, then fully ccw while

noting VARIABLE TIMING indication at each limit. If VARIABLE TIMING indication

at each limit is not at least 7.5, perform b below.

(3) Connect frequency counter input to TI MARKER OUT using 50Ω feedthrough

termination.

(4) Set MARKER (SEC) switch to .1m.

(5) Adjust VARIABLE TIMING (OUT) control for a 0.0% VARIABLE TIMING

indication. Frequency counter will indicate between 9.99 and 10.01 kHz.

(6) Adjust VARIABLE TIMING (OUT) control for a 5.0% FAST VARIABLE

TIMING indication. Frequency counter will indicate between 10.49 and 10.51 kHz.

(7) Adjust VARIABLE TIMING (OUT) control for a 5.0% SLOW VARIABLE

TIMING indication. Frequency counter will indicate between 9.49 and 9.51 kHz.

(8) Push in VARIABLE TIMING (OUT) control.

b. Adjustments. Adjust VARIABLE TIMING CENTER (fig. 1) until VARIABLE

TIMING indication at each limit is at least 7.5 (R).

10. High Speed Trigger Amplitude

a. Performance Check

(1) Connect oscilloscope CH 1 input to TI +TRIGGER OUT using 50Ω feedthrough

termination.

(2) Connect a 50Ω feedthrough termination to TI MARKER OUT.

(3) Rotate MARKER (SEC) switch back and forth between .1 and 50n noting

amplitude at each position. If amplitudes are not within 0.1 V of each other, perform b

below.

b. Adjustments.

(1) Adjust HIGH SPEED TRIGGER AMPL (fig. 1) until amplitudes are within 0.1

V of each other (R).