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Triggering

TDS5000 Series User Manual

3-75

Use this procedure to detect and trigger on pulse edges that traverse between two

thresholds at faster or slower rates than the specified time. You can set up the

oscilloscope to trigger on positive or negative edges.

Overview To trigger on transition time Control elements and resources

Select transition

triggering

1. Push the front-panel ADVANCED button.

2. In the Trigger Setup control window, select the A Event

tab.

3. Click Transition.

Select the

source

4. To specify which channel becomes the trigger source,

click Source and select the source from the list.

Select the

polarity

5. Select a Polarity value to specify the direction of the

pulse edge:

H Pos monitors the transition time (slew rate) of the

positive-going edges of pulses. The edge must first

cross the lower threshold and then cross the upper

threshold.

H Neg monitors the transition time (slew rate) of the

negative-going edges of pulses. The edge must

first cross the upper threshold and t hen cross the

lower threshold.

H Either monitors positive- and negative-going edges

of pulses. The edge may fi rst cross either threshold

and then cross the other.

Triggering on Transition

Time

Tektronix TDS5052 User Manual

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