Tektronix TDS5054, User Manual

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Triggering
TDS5000 Series User Manual
3- 67
Window Trigger.
Use the Window trigger to trigger the oscilloscope when the
input signal rises above an upper threshold level or falls below a lower threshold
level. After setting these levels, you can specify whether you want to trigger the
instrument as the signal is entering or leaving the threshold window. You can
further qualify the trigger event in terms of time, or by the logical state of other
channels.
Video Trigger.
Use the Video trigger to trigger the oscilloscope on specified
fields or lines of a composite video signal. Select from several preset video
signal formats or set a custom format. Only composite signal formats are
supported. Graphic display formats such as RGB and VGA are not supported.