Acquire the Sign
al
Average
3. Set the Average acquisition mode from the
side-bezel m enu. You can chose how many
samples on whi
ch to average: 2, 4, 8, 16,
32, 64, 128, 256, or 512.
Average
On |Off
4. Turn multipurpose k nob a to set the number
of waveforms
to average over.
5. Push Record Length.
Choose 100 k or 1.00 M points. The
selections depend on the horizontal time per
division setting. 125 k and 1.25 M records
lengths are available at s lower time per
division settings.
6. Push the lower-bezel Delay buttontoselect
On when you want to delay the acquisition
relative to the trigger event.
With Delay set to On, turn the Horizontal Position knob counterclockwise to increase the delay. The trigger point will move
to the
left and u ltimately outside of the acquired waveform. Then you can adjust the Horizontal Scale knob to acquire more
detail around the area of interest at the center of the screen.
When this delay is on, the trigger point separates from the horizontal expansion point. The horizontal expansion point
stays at the center of the screen. The trigger point can move off the screen. When this happens, the trigger marker turns
to po
int in the direction of the trigger point.
Use t
he delay feature when you want to acquire waveform detail that is separated from the trigger event by a significant
interval of time. For example, you can trigger on a sync pulse that occurs once every 10 ms and then look at high-speed
signal characteristics that occur 6 ms after the sync pulse.
When the delay feature is set to Off, the expansion point is tied to the trigger point so that scale changes are centered
aro
und the trigger point.
48 MSO2000B and DPO2000B Series Oscilloscopes User Manual
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