HP 54522A - Page 71

Real-Time
Single-Shot
Exercise
Figure 4-6
Horizontal
Repetitive/Real Time Softkey
In the real-time mode, data is interpolated (reconstructed) at the faster time
base settings for an improved display of the waveform. The 2-GSa/s sampling
rate of the oscilloscope allows the capture of very fast nonrecurring events,
like a microprocessor start-up sequence, or error-causing glitches that
disrupt system performance. This exercise shows you the difference
between noninterpolated and interpolated data:
1 Press the Recall key. Then, press the Clr key.
2 Connect a coaxial cable between the rear-panel AC connector and
channel 1.
3 Press the Autoscale key.
4 Use the time/div knob to change the time base to 2 ns/div. Then, use
the delay knob to horizontally move the signal so it is slightly to the
right of center screen.
5 Press the Horizontal Setup key. Then select the real-time mode.
op running HORIZONTAL
2 GSafs
_—— - delay
|- reference
lett Gi right
repetitive
| AS
: \- sequential) —,
i i
|| on
|crecord length
“en be =| |
-35,000 hs a0 8 i 0
ATE sijust
2 G5a/s
“sample clock —
4-18