108 Keysight InfiniiVision 1200 X-Series and EDUX1052A/G Oscilloscopes User's Guide
11 Triggers
 
6 Press the Rising Edge or Falling Edge softkey to specify the clock edge being used.
7 Press the Data softkey; then, turn the Entry knob to select the input channel 
with the data signal.
8 Set the appropriate trigger tevel for the data signal using the Trigger Level 
knob.
9 Press the <Setup softkey, and turn the Entry knob to select the setup time.
10 Press the <Hold softkey, and turn the Entry knob to select the hold time.
Video Trigger
Video triggering can be used to capture the complicated waveforms of most 
standard analog video signals. The trigger circuitry detects the vertical and 
horizontal interval of the waveform and produces triggers based on the video 
trigger settings you have selected.
The oscilloscope's MegaZoom IV technology gives you bright, easily viewed 
displays of any part of the video waveform. Analysis of video waveforms is 
simplified by the oscilloscope's ability to trigger on any selected line of the video 
signal.