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Page
114
October 2014
4.6
Example 6: Video Signal Trigger
Observe the video circuit of a television, apply the video trigger and obtain the
stable video output signal display.
►
Video Field Trigger
For the trigger in the video field, carry out operations according to the
following steps:
Press the
Trigger Menu
button to display the trigger menu.
Press the
F1
menu selection button and choose
Single
for Type.
Press the
F2
menu selection button and choose
CH1
for Source.
Press the
F3
menu selection button and choose
Video
for type.
Press the
F4
menu selection button and choose
Field
for Sync.
Adjust the
VOLTS/DIV
,
VERTICAL POSITION
and SEC/DIV
knobs
to obtain a proper wave form display (see Fig.109).
Figure 109.
Wave Form Obtained from Video Field Trigger.