Fluke Biomedical 190M - Manual (Page 75)

Triggering on Waveforms
Triggering on Video Signals
4
65
Triggering on Video Signals
To trigger on a video signal, first select the standard of the
video signal you are going to measure:
1 Apply a video signal to the red input A.
2
TRIGGER
Display the TRIGGER key labels.
3
F4
Open the Trigger Options menu.
4
ENTER
Select Video on A … to open the
TRIGGER ON VIDEO menu.
5
ENTER
Select positive signal polarity for
video signals with negative going
sync pulses.
Figure 32. Measuring Interlaced Video Signals
6
ENTER
Select a video standard or Non
interlaced… and return.
If you select Non interlaced a
scan rate selection menu will
open.
Trigger level and slope are now fixed.
Observe that the key labels at the bottom of the screen
have been changed to allow further selection of specific
video trigger settings.