Triggers
R&S
®
RTO6
217User Manual 1801.6687.02 ─ 05
Mode
Selects the lines or fields on which the instrument triggers. A
vailable modes depend on
the scanning system of the selected standard.
"All fields"
T
riggers on the first video line of the frame (progressive scanning) or
field (interlaced scanning), for example, to find amplitude differences
between the fields.
"Odd fields /
Even fields"
T
riggers on the first video line of the odd or even field. These modes
are available for interlaced scanning (PAL, P
AL-M, SECAM, NTSC,
1080i) and progressive segmented frame scanning (1080p/24sF).
They can be used, for example, to analyze the components of a video
signal.
"All lines"
Triggers on the line start of all video lines, for example, to find maxi-
mum video levels.
"Line number"
Triggers on a specified line. Enter the line number in "Line #".
Remote command:
TRIGger<m>:
TV:MODE
on page 1413
Line #
Sets the number of the line to be triggered on if "Mode" is set to "Line number". Usually
the lines of the frame are counted, beginning from the frame start.
For NTSC signals, the lines are counted per field, not per frame. Therefore, you have
to set the "Field" (odd or even), and the line number in the field.
Remote command:
TRIGger<m>:TV:LINE on page 1414
TRIGger<m>:TV:LFIeld on page 1415
Trigger level
Sets the trigger level as threshold for the sync pulse. Make sure that the trigger level
crosses the synchronizing pulses of the video signal.
The hysteresis is set according to the settings in the "Noise Reject" tab.
Remote command:
TRIGger<m>:LEVel<n>[:
VALue] on page 1391
Signal polarity
Sets the polarity of the signal. Note that the sync pulse has the opposite polarity, for
example, a positive signal has a negative sync pulse.
Trigger types
To Next Page
Loading...
