Agilent Technologies HP 8566B Especificaciones descargar pdf (Pagina 200)

100

101

3. Preliminary Display Adjustments (SN 3004A and Above)

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.

running

_,..._......_,........................

20.0

V/div

125.000

50.0

ns/div

25.00 v

Figure 3-27. Composite X Deflection Waveform

17. Adjust

AlA2R217

HF GAIN,

AlA2C204,

and

AlA2C209

for

minimum overshoot and minimum rise and fall times of the

composite

Xdeflection

waveform.

Note

Always adjust

AlA2C204

and

AlA2C209

in approximately equal

amounts. Do not adjust one to its minimum value and the other to its

maximum value.

18. Use the oscilloscope

Cntav)

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 3-28.

OVERSHOOT

Figure 3-28.

Rise and

I%11

Times and Overshoot Adjustment Waveform

3-60 Adjustments

1 2 ... 195 196 197 198 199 200 201 202 203 204 205 ... 404 405

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