Video Trigger - Tenma 72-7615 Manual

Digital storage oscilloscope
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Video Trigger

By selecting video trigger you can carry out field or line trigger with NTSC or PAL
standard video signals. Default trigger coupling is DC.
Functions Menu
Type
Trigger source
Standard
Synchronisation
When PAL is selected for STANDARD format and SYNCHRONISATION mode is
LINE you will see a screen display similar to this:-
When SYNCHRONISATION mode is FIELD you will see a screen display similar to
this:-
Setup
Video
CH1
Set Ch1 as the trigger signal
CH2
Set CH2 as the trigger signal
EXT
Set the external trigger input channel as the trigger signal
EXT/5
Attenuate the external trigger source 5 times as the trigger
signal
PAL
Suitable for video signals of low black level
NTSC
Suitable for video signals of high black level
All lines
Set the TV line to synchronise with trigger
Specified
Set synchronised trigger on the specified line and adjust by
lines
turning the control on the front panel
Odd field
Set video odd field to synchronised trigger
Even field
Set video even field to synchronised trigger
Notes
14

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