Composite X Deflection Waveform - HP 8566B Adjustment Manual

3. Preliminary Display Adjustments (SN 3001A and Below)
3-52 Adjustments
the combined X deflection voltage applied to the CRT. Use the
oscilloscope front-panel knob to adjust waveform fl sensitivity for
approximately 8 vertical divisions.
. .
- 1 2 5 . 0 0 0 ns
Figure 3-20. Composite X Deflection Waveform
17. Adjust AlA4R28 HF GAIN, AlA4C10, and AlA4Cll for minimum
overshoot and minimum rise
X-deflection waveform. See Figure 3-18 for the location of the
adjustments.
Always adjust AlA4ClO and AlA4Cll in approximately equal
amounts. Do not adjust one to its minimum value and the other to its
maximum value.
18. Use the oscilloscope m markers to measure the risetime,
falltime, and percent overshoot of the composite Xdefection
waveform. Rise and fall times should both be less than
approximately 65 ns between the 10% and 90% points on the
waveform. Overshoot should be less than 3% (approximately 0.25
divisions). See Figure 3-21.
1 2 5 . 0 0 0 ns 3 7 5 . 0 0 0 rls
5 0 . 0 ns/div
and
fall times of the composite
25.00 v