TB 9-6625-1995-35
(50) Adjust R355 (fig. 2) ccw until intensified zone moves to the right and disappears.
(51) Connect digital multimeter HI to TP345 (fig. 2) and LO to chassis ground.
(52) Adjust R345 (fig. 2) ccw until delayed sweep starts again. Record digital
(53) Adjust R345 (fig. 2) ccw until delayed sweep disappears. Record digital
(54) Adjust R345 (fig. 2) for the average of digital multimeter indications recorded in
(52) and (53) above. Delayed sweep should be visible.
(55) Disconnect digital multimeter HI from TP345 (fig. 2) and connect digital
(56) Adjust R355 (fig. 2) ccw until delayed sweep disappears. Record digital
(57) Adjust R355 (fig. 2) for the average of digital multimeter indications recorded in
(55) and (56) above.
(58) Adjust R245 (fig. 2) for a delayed sweep trigger point at graticule centerline.
(59) Adjust R325 (fig. 2) for a delayed sweep trigger point at approximately 0.5
division from bottom of waveform as delayed triggering LEVEL control is rotated through
negative (-) portion of its range.
(60) Release delayed triggering SOURCE pushbutton to EXT and adjust R225 (fig.
2) for a
delayed sweep trigger point at
graticule centerline.
(61) Press delayed triggering SOURCE pushbutton to INT.
9. Horizontal Timing and
Differential Delay Time
a. Performance Check
(1) Position controls as listed in (a) through (q) below:
(a)
MAIN TRIGGERING SLOPE switch to +.
(b)
MAIN TRIGGERING LEVEL control to midrange.
(c)
Press MAIN TRIGGERING MODE NORM pushbutton.
(d)
Press MAIN TRIGGERING COUPLING AC pushbutton.
(e)
Press MAIN TRIGGERING SOURCE INT pushbutton.
(f)
POSITION control to midrange.
(g)
TRACE SEP control fully cw.
(h)
TIME/DIV OR DLY TIME switch to 1 ms.
(i)
DLY'D time/division switch to 1 ms PUSH FOR DLY'D.
(j)
VARIABLE (CAL IN) control to in position.
(k)
DELAY TIME MULT dial to 0.0.
(l)
INTENSITY control for suitable viewing.