4 - 128 COMMAND REFERENCE
Description:
The TRIGger:VIDeo:FIELd:SELect command programs the video trigger mode to
"field" or "lines". The TRIGger:VIDeo:FIELd[:NUMBer] command selects between
"field1" and "field2".
After a
*
RST command, lines triggering (ALL) and field number 1 is selected.
Notice that there exists a coupling between selecting field1/field2 using the
TRIGger:VIDeo:FIELd[:NUMBer] command and selecting the line number using
the TRIGger:VIDeo:LINE command. Programming the line number automatically
sets the field1/2 triggering, and programming field1/2 recalculates the selected
line number as follows:
> from field1 (1 .. 312) to field2: line_nr = line_nr + 625/2
> from field2 (313 .. 625) to field1: line_nr = line_nr - 625/2
Example:
Send
→ TRIGger:TYPE VIDeo Selects TV video
triggering.
Send
→ TRIGger:VIDeo:FIELd:SELect ALL Selects video lines
trigger mode.
Send
→ TRIGger:VIDeo:LINE 123 Selects video line
number 123.
Send
→ TRIGger:VIDeo:FIELd:SELect NUMBer Selects video field
triggering. Line number
123 selects field1
(field1 = lines 1 .. 312).
Send
→ TRIGger:VIDeo:FIELd:NUMBer 2 Selects video field2
trigger mode. As a
result the video line
number is
automatically switched
to 435 (= 123 + 625/2).
Send
→ TRIGger:VIDeo:LINE 325 Selects video line
number 325.
Send
→ TRIGger:VIDeo:FIELd:NUMBer 1 Selects the video field1
trigger mode. As a
result the video line
number is
automatically switched
to 13 (= 325 - 625/2).
Front panel compliance:
The TRIGger:VIDeo:FIELd:SELect and TRIGger:VIDeo:FIELd[:NUMBer] com-
mands are the remote equivalent of the front panel TRIGGER MAIN TB - tv -
field1/field2/lines softkey menu.
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