When there is enough waveform noise, a typical peak detect display shows large
black areas. The oscilloscope displays this area with diagonal lines to improve
display performance.
Typical peak detect display
TBS1000B peak detect display
Average. Use Average acquisition mode to reduce random or uncorrelated noise
in the signal you want to display. Data is acquired in sample mode, then a
number of waveforms are averaged together.
Select the number of acquisitions (4, 16, 64, or 128) to average for the waveform.
Run/Stop Button. Push the Run/Stop button when you want the oscilloscope to
continuously acquire waveforms. Push the button again to stop the acquisition.
Single Button. Push the Single (single sequence) button when you want the
oscilloscope to acquire a single waveform and then stop. Each time you push the
Single button, the oscilloscope begins to acquire another waveform. After the
oscilloscope detects a trigger it completes the acquisition and stops.
Acquisition mode Single button
Sample, Peak Detect Sequence is complete when one acquisition is acquired
Average Sequence is complete when the defined number of acquisitions is
reached; See Acquire on page 73.
Scan Mode Display. You can use the Horizontal Scan acquisition mode (also
called Roll mode) to continuously monitor signals that change slowly. The
oscilloscope displays waveform updates from the left to the right of the screen
and erases old points as it displays new points. A moving, one-division-wide
blank section of the screen separates the new waveform points from the old.
The oscilloscope changes to the Scan acquisition mode when you turn the
Horizontal Scale knob to 100 ms/div or slower, and select the Auto Mode option
in the Trigger Menu.
To disable Scan mode, push the Trigger Menu button and set the Mode option to
Normal.
Stopping the Acquisition. While the acquisition is running, the waveform
display is live. Stopping the acquisition (when you push the Run/Stop button)
freezes the display. In either mode, the waveform display can be scaled or
positioned with the vertical and horizontal controls.
Reference
TBS1000B and TBS1000B-EDU Series Oscilloscopes User Manual 75
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