TB 9-6625-2347-35
(m) VAR HOLDOFF fully ccw to NORM.
(n) TRIGGER MODE AUTO NORM TV FIELD switch to AUTO.
(o) SLOPE switch to
.
(p) INT switch to VERT MODE.
(q) SOURCE switch to EXT.
(r) EXT COUPLING switch to DC10.
(3) Connect oscilloscope calibrator SOURCE/MEASURE CHAN 1 to TI CH 1 OR
X input and oscilloscope calibrator EXT TRIG CH 5 to TI EXT INPUT using 50 Ω
feedthrough terminations.
(4) Set oscilloscope calibrator for a CHAN 1, MARKER mode output of .1 ms/div
and TRIGGER MODE on.
(5) Adjust R752 (fig. 1) for 1 time marker per division over center eight
divisions (R).
(6) Pull TI SEC/DIV variable control to out position.
(7) Change oscilloscope calibrator CHAN 1, MARKER mode output to 10 s/div.
(8) Adjust R733 (fig. 2) for 1 time marker per division over center eight
divisions (R).
(9) Push TI SEC/DIV variable control to in position.
(10) Change oscilloscope calibrator CHAN 1, MARKER mode output to 0.5 ms/div.
(11) Adjust TI ⇦POSITION⇨ control to align middle time marker to center vertical
graticule line.
(12) Pull TI SEC/DIV variable control to out position.
(13) Adjust R758 (fig. 1) to position middle time marker to center vertical graticule
line.
(14) Push TI SEC/DIV variable control to in position and check that there is no
horizontal shift in time marker position.
(15) Repeat (11) through (14) above until no further improvement is noted.
(16) Set TI SEC/DIV switches to 5 s and push SEC/DIV variable control to in
position.
(17) Change oscilloscope calibrator CHAN 1, MARKER mode output to 5 s/div.
(18) Adjust C626 (fig. 2) for 1 time marker per division across graticule area (R).
(19) Set TI SEC/DIV switches to .05 s.
(20) Change oscilloscope calibrator CHAN 1, MARKER mode output to 50 ns/div.
(21) Adjust C754 (fig. 1) for equally spaced time markers at start of sweep (R).
(22) Pull TI SEC/DIV variable control to out position.
(23) Change oscilloscope calibrator CHAN 1, MARKER mode output to 10 ns/Div.
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