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set the trigger level to 50%.
Setting Acquisition Modes
Use this procedure to set the data acquisition mode and specify acquisition start/stop methods.
Prerequisites
1 Power on the instrument and set up the horizontal and vertical
controls and triggering.
Access the acquisition
modes
2 Select Acquisition Mode from the Horiz/Acq menu to open the
Acquisition Mode control window.
Select the acquisition
mode
3 Click an Acquisition Mode button. For Average and Envelope
modes only, select the number of acquisitions to average or
envelope. For WfmDB acquisition mode select the number of
samples.
Set the stop mode
4 Push the RUN/STOP front-panel button to toggle between
starting and stopping acquisitions.
OR
Push the SINGLE button to acquire enough waveforms to satisfy
the acquisition mode.
Select sampling mode
5 To select the sampling mode, click the Horiz toolbar button, or
select the Horizontal/Acquisition Setup command from the
Horiz/Acq menu to open the Horizontal/Acquisition Setup
control window. Select the Acquisition tab.
6 Select Real Time Only, Interpolated Real Time, or Equivalent
Time
 Real Time Only sampling acquires all the points in a
waveform record after one trigger event.
 Interpolated Real Time sampling interpolates between
the samples the instrument acquires when it cannot
acquire all the real samples it needs to fill up its
waveform record.
 Equivalent time sampling starts when the time base
setting (horizontal scale) is too fast to let the instrument
get enough samples with which to create a waveform
record using real-time sampling. Equivalent time mode
is intended for repetitive signals only.
Setting Up Roll Mode
Use the procedure that follows to set up roll mode acquisitions.
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