Specifications

6
Adjust the channel 1 low-frequency compensation adjustment for as
flat a pulse top as possible.
Channel 1 is labeled "1" on HP 54645A and "A1" on HP 54645D.
7
Repeat steps 1 through 6 for channel 2.
Channel 2 is labeled "2" on HP 54645A and "A2" on HP 54645D.
Variable Capacitor Reference Designators
To adjust the high-frequency pulse response
In this procedure, you adjust the high-frequency pulse response for each
channel.
Table 7-15
Equipment Required
Equipment Critical specifications Recommended Model/Part
Pulse generator Rise time <875 ps PSPL 1107B TD and
PSPL 1110B Driver
Adapter SMA (f) to BNC (m) HP 1250-1787
Feedthrough 50
Ω
, BNC (m) and (f) HP 11048C
Figure 7-6
Testing, Adjusting, and Troubleshooting
To adjust the high-frequency pulse response
7-36