Fluke fluke123 user manual Isolated Triggering Triggering on Video Signals

Using The Test Tool	1
Triggering on a Waveform

Isolated Triggering Triggering on Video Signals

Use the optically isolated trigger probe (ITP120, optional) to trigger on an external source, and to isolate the test tool from a trigger waveform. See Figure 1-17.

∙Apply an interlaced video signal to the red input A.

To trigger on a random video line, continue from point  of the previous example as follows:

To choose the isolated trigger probe, select ‘EXT’ in point

of the previous example. Trigger level is fixed and is TTL compatible.

Figure 1-17. Isolated Triggering







  

Highlight VIDEO on A.

Open the VIDEO TRIGGER submenu.

Highlight PAL.

Select PAL.

Highlight RANDOM.

Select RANDOM.

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