HP 8112A Operating, Programming And Servicing Manual page 160

Note
9-8 Adjustment Procedures
9. Centre the pulse base line vertically (offset = 8 V) and set
10. Set the VARIABLE LEVELS = -5 to +5%
11. Check overshoot < 5% in normal and complement modes.
Re-adjust AlC530 if necessary.
12. Set the HP 8112A as follows:
Transition
0 %
13. Repeat steps 7 to 11 using 90 - 110% / -10 - 10% and adjust
modes.
14. Set the HP 8112A as follows:
LIMIT
15. Check the overshoot at both HIL and LOL for both Fixed and
Linear modes. If necessary, re-adjust AlC530 or AlC410 to
achieve the above limits. Repeat steps 1 to 12 if necessary.
The oscilloscope trace flatness error (GaAs input circuit) may affect
I
measurement of pre- and over-shoot
16. Set the HP 8112A as follows:
Transition
HIL
LIMIT
17. Remove one of the two 20 dB attenuators and set attenuation
factor to 10.
Fixed
Pulse Width
Amplitude
1 0 %
Pre-shoot
Figure 9-3. Typical Pulse Display
-2.0 v
Off
Fixed
-0.5 v
Off
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