Setting the trigger mode
Use this procedure to set the oscilloscope trigger Mode. The trigger mode sets
how the oscilloscope behaves in the absence or presence of a trigger. Trigger
mode also enables the trigger holdoff function. See Trigger modes on page 43.
Trigger mode does not set the trigger conditions; those are set with the Trigger
Type side-menu buttons.
1. Push the Trigger Menu front-panel button.
2. Push -More- Page 1/2 side-menu button.
3. Push the Mode side-menu button.
4. Use the Multipurpose knob to select and click a trigger mode or holdoff
mode:
■
Click Auto (Untriggered Roll) to set the oscilloscope to acquire and
display a waveform even if a trigger does not occur. If there is no valid
triggering event, the waveform will appear to roll across the screen.See
Auto Untriggered Roll trigger mode on page 43.
■
Click Normal to set the oscilloscope to acquire and display a waveform
only when a valid trigger event occurs. See Normal trigger mode on
page 44.
■
Click Holdoff to set a time period after a trigger event, during which the
oscilloscope ignores new trigger events. Once the holdoff period is over,
the oscilloscope starts looking for the trigger condition. See Holdoff
trigger mode on page 44.
■
Click Set Holdoff to Minimum to set the HoldOff value to the minimum
value. The minimum holdoff period is 20 ns.
Trigger setup
TBS1000C Series Oscilloscopes User Manual 63
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