HP 54620A, User'S And Service Manual

Page: 86 / 243

Figure 22 shows the same acquisition with the horizontal mode set to
Delayed. Again, the time reference is set to Center. Though the marker (the
solid triangle
▼ ) points to the trigger event in both the main and delayed
sweep, the delay values themselves are independently adjustable. The delay
value for the delayed sweep is set to 8
µ
s. This is different than the setting
for the main sweep, which remains at 15
µ
s in this figure, and is not
adjustable with the delay knob (while the delayed sweep is active). In both
the main and delayed sweep, the hollowed triangle (
∇
) indicates the part of
the waveform that is delayed by the respective value from the trigger event.
Delayed Sweep with Delay of 8
µ
s
Empty triangle in main sweep
shows the part of the
waveform that is delayed
15
µ
s from the trigger
The trigger position in
main and delayed
sweeps
Empty triangle in delayed
sweep shows the part of
the waveform that is
delayed 8
µ
s from the
trigger
Figure 22
Making Analyzer Measurements
To change the time reference position
85