HP 54600B User's And Service Manual page 66

5 Set the time base to 200 s/div, then center the signal on the display
with the delay knob (delay about 800 s).
Press
6
7
Set the delayed sweep to 20 s/div, then set the expanded portion
over the VITS (delay about 988.8 s).
Figure 2–28
Second vertical interval windowed on the VITS
, then press the
Main/Delayed
Operating Your Oscilloscope
To analyze video waveforms
softkey.
Delayed
2–39