Trigger setups Set up a Width trigger
Behavior
Use the Video trigger to trigger the instrument on specified fields or lines of a composite video signal.
NOTE. Only composite signal formats are s upported. Graphic display formats such as RGB and VGA
are not supported.
Select from several preset video signal formats. If using a preset format, the Lines and Fields Autoset
buttons will optimize the instrument for viewing the fields or lines for your chose n format. You can also
select a graticule and set the polarity of the scan. When you click on the trigger window controls, the
trigger gr
aphic
(see page 386) shows the trigger sequence.
YoumustalsosettheScan Type and Sca n R ate
(see page 441) and you can specify a value for the Holdoff
(see page
391) control in units of time only.
What do you want to do next?
Learn m ore about other trigger types. (see page 386)
Return to the Trigger Setup control window. (see page 385)
Scan controls
These controls are available for the Bilevel and Trilevel video format types. Interlaced and
Progressive are the only available Scan Types.
The Scan Rate enables you to trigger on nonbroadcast v ideo signals that have unique scan rates.
Select the scan rate range that includes your signal: 15-20 kHz, 20-25 kHz, 25-35 kH z, 35-50 kH z, or
50-
65 kH z.
Se
tupaWidthtrigger
Fr
om the Trig menu, select Width Setup.
Overview
Use the controls in this window to set up the Width trigger parameters.
Behavior
For information o n the controls, click the buttons.
DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series 441
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