TB 9-6625-1958-24
9. Error Readout
a. Performance Check
(1) S e t M A R K E R
(SEC)
1m
VARIABLE
switch
to
and
pull
out
T I M I N G ( O U T ) 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.
f
(3) C o n n e c t f r e q u e n c y c o u n t e r i n p u t t o T I M A R K E R O U T u s i n g 5 0
e e d t h r o u g h 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
f
(1) C o n n e c t o s c i l l o s c o p e C H 1 i n p u t t o T I + T R I G G E R O U T u s i n g 5 0
e e d t h r o u g h termination.
feedthrough termination to TI MARKER OUT.
(2) Connect a 50
(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,
p e r f o r m b below.
b. Adjustments. Adjust HIGH SPEED TRIGGER AMPL (fig. 1) until amplitudes
are within 0.1 V of each other (R).
11. Marker Amplitude
a. Performance Check
(1) Connect measuring receiver sensor module to TI MARKER OUT.
(2) Set MARKER (SEC) switch to 521n and press 5nS pushbutton.
(3) Set measuring receiver to measure volts at 200 MHz. If measuring receiver
indication is less than 265.1 mV, perform b (1) below.
(4) Press 2nS pushbutton.
