Technical data

Oscilloscope Familiarization Labs 2
4000 X-Series Oscilloscopes Advanced Training Guide 35
16 Press the Current Seg softkey; then turn the Entry knob to review all 500
waveforms.
17 Now set the Current Seg = 500 using the Entry knob (last captured
segment/waveform).
Along with capturing consecutive low duty cycle signal bursts, the scope
also “time-tags” each segment/waveform so that you know the time of each
capture segment/waveform relative to the first captured
segment/waveform. Time- tags are shown in the lower left- hand corner of
the display. Segment #500 should have a time- tag of approximately 2
seconds along with a time- of- day stamp as shown in Figure 18. The
captured waveform should also have very high resolution because the
scope used a high sample rate to capture each waveform. If you attempted
to capture ~2 s (200 ms/div) of time- span using the scope’s Normal
acquisition mode, the scope would have significantly reduced its sample
rate and thereby would have provided extremely poor sample resolution on
each burst.
Segmented Memory acquisition optimizes oscilloscope acquisition memory
by only capturing waveform data around small portions (or segments) of a
signal (a short sine wave burst in this case). The scope does not capture
Figure 18 Using Segmented Memory Acquisition to capture more waveforms with high
resolution.