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For example, to get a stable trigger on the repetitive pulse burst as shown in the
figure below, set the holdoff time to be greater than t1 but less than t2.
Figure 8.2 Trigger Holdoff
Click or tap the trigger information label (as shown in the figure below) at the top of
the screen or press the front-panel
key to open the "Trigger" menu. Click or
tap the input field of
Holdoff to set the holdoff time (the holdoff to this time when
the waveforms are stably triggered) with the pop-up numeric keypad. You can also
use the corresponding multipurpose knob to set the value. The adjustable range of
the holdoff time is from 8 ns (default) to 10 s.
8.6 Noise Rejection
Noise rejection can reject the high frequency noise in the signal and reduce the
possibility of triggering the oscilloscope by mistake.
Click or tap the trigger information label (as shown in the figure below) or press the
front-panel
key to open the "Trigger" menu. Click or tap the Noise Reject
on/off switch to enable or disable the noise rejection function.
8.7 Trigger Type
This series oscilloscope provides the following trigger types.
Triggering the Oscilloscope
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved. DHO900 User Guide
65
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