TB 9-6625-2139-35
(84) Adjust CH 1 POSITION control to position top of waveform to center horizontal
graticule line.
(85) Adjust C237 (fig. 1) for minimum overshoot and R240 (fig. 1) and R241 (fig. 1)
for best flat top on front corner of waveform (R).
(86) Set CH 1 VOLTS/DIV switch to 2m.
(87) Set oscilloscope calibrator output for 5 divisions of vertical deflection on TI.
(88) Adjust CH 1 POSITION control to position top of waveform to center horizontal
graticule line.
(89) Adjust C26 (fig. 1) for minimum overshoot on waveform (R).
(90) Set VERTICAL MODE CH 1 BOTH CH 2 switch to CH 2 and repeat
technique of (82) through (84) above for CH 2.
(91) Adjust C180 (fig. 1) for minimum overshoot on displayed waveform (R).
(92) Set CH 2 VOLTS/DIV switch to 2m.
(93) Set oscilloscope calibrator output for 5 divisions of vertical deflection on TI.
(94) Adjust CH 2 POSITION control to position top of waveform to center horizontal
graticule line.
(95) Adjust C76 (fig. 1) for minimum overshoot on waveform (R).
9. Horizontal
a. Performance Check
(1) Position controls as listed in (a) through (e) below:
(a)
VERTICAL MODE CH 1 BOTH CH 2 switch to CH 1.
(b)
CH 1 VOLTS/DIV switch to .5.
(c)
B DELAY TIME POSITION control fully ccw.
(d)
B TRIGGER LEVEL control fully cw.
(e)
A TRIGGER NORM pushbutton pressed.
(2) Connect oscilloscope calibrator CHAN 1 to TI CH 1 using a 50Ω feedthrough
termination.
(3) Press oscilloscope calibrator MARKER pushbutton to illuminate green LED
and set oscilloscope calibrator output for settings listed in first row in table 9.
(4) Adjust A TRIGGER LEVEL, A INTENSITY, and CH 1 POSITION controls
for suitable viewing.
(5) Adjust horizontal POSITION control to aline 2nd time marker with 2nd vertical
graticule line.
(6) Rotate oscilloscope calibrator knob located below EDIT FIELD pushbutton to
and TI linearity will be within limits listed in table 9, if not perform adjustments listed in
