HP 8112A Operating, Programming And Servicing Manual page 236

10.4-12 Servicing the Shaper and Output Amplifier
Figure 10.4-a. Shaper IC Output (FIXED)
6. Change the HP 8112A transition mode to LINEAR or
GAUSSIAN.
7. Check the output on TP6 against Figure 10.4-9
Figure 10.4-g. Shaper IC Output (LINEAR)
8. Change the HP 8112A HIL to +0.99 V and transition mode to
FIXED.
9. Check the output on TP6 against Figure 10.4-10
Figure 10.4-10. Shaper IC Output (FIXED, HIL +0.99 V)
FIXED