HP 8112A Operating, Programming And Servicing Manual page 164

28. Check that the mid-range for 3.5 ms is f 50 ms.
29. Repeat steps 18 to 28 and re-adjust if necessary.
If the adjustment is not possible add the value of A2VR4/R64
Note
table 9-l) and repeat steps 18 to 28.
30. Set the HP 8112A as follows:
31. Connect HP 8112A Trigger Output via a 20 dB attenuator, to
32. Connect HP 8112A Output via a 20 dB attenuator to input 4 of
33. Press [s) and adjust A2R13 for 18 ns f 0.3 ns at 50% of
34. Alter HP 8112A DBL to 99.9 ns.
35. Adjust A2R61 for 100 ns fl ns at 50 % of amplitude.
36. Alter HP 8112A DBL to 50 ns.
37. Check that the mid-range reading for 50 ns f 2ns at 50% of
38. If necessary, repeat steps 30 to 37 and adjust if necessary.
P E R
DBL
WID
LIMIT
Ext. trigger of the HP 54121A.
the HP 54121A.
amplitude. See Figure 9-5.
Figure 9-5. Double Pulse Adjustment
amplitude.
200 ns
20 ns
10 ns
Off
(See