TB 9-6625-2347-35
NOTE
In the following adjustment, keep the adjustment screws for
possible.
divisions over center 8 divisions of magnified sweep (R).
(25) Adjust ⇦POSITION⇨ control to align 5th time marker with 2nd vertical
graticule line.
(26) Adjust C734 (fig. 2) for 1 time marker per two divisions over center 8 divisions of
magnified sweep (R).
(27) Adjust ⇦POSITION⇨ control to check linearity of 15th time marker.
(28) Repeat (24) through (27) above until no further improvement is noted.
(29) Push TI SEC/DIV variable control to in position and adjust ⇦POSITION⇨
control to recenter trace.
(30) Repeat (20) through (29) above until no further improvement is noted.
(31) Position TI switches as listed in (a) through (c) below:
(a) CH 1 VOLTS/DIV to 20 m.
(b) SEC/DIV to X-Y.
(c) TRIGGER SOURCE to INT.
(32) Set oscilloscope calibrator for a CHAN 1, VOLT DC mode output of 100 mV.
(33) Adjust R709 (fig. 1) for exactly 5 divisions of horizontal deflection (R).
10. Triggering
a. Performance Check
(1) Position TI switches as listed in (a) through (d) below:
(a) CH 1 VOLTS/DIV to 2 m.
(b) CH 2 VOLTS/DIV to 20 m.
(c) SEC/DIV to .2 s.
(d) TRIGGER MODE AUTO NORM TV FIELD to AUTO.
(2) Connect oscilloscope calibrator SOURCE/MEASURE CHAN 1 to TI CH 1 OR
X input using a 50 Ω feedthrough termination.
(3) Set oscilloscope calibrator for a CHAN 1, LEVEL SINE output of 2 MHz and 4
divisions of vertical display on TI.
(4) Set TI CH 1 VOLTS/DIV switch to 20 m.
(5) Set TI TRIGGER switches to combination listed in first row of table 12.
(6) Adjust TI TRIGGER LEVEL control to obtain a stable display. If a stable
display cannot be obtained perform b below.
(7) Repeat technique of (5) and (6) above for remaining TRIGGER pushbutton
combinations listed in table 12. If a stable display cannot be obtained perform b below.
