Triggers
R&S
®
RTE
261User Manual 1326.1032.02 ─ 20
HDTV standards are indicated by the number of active lines, the scanning system (p
for progressive scanning, i for interlaced scanning) and the frame rate. For interlaced
scanning, the field rate is used instead of the frame rate. 1080p/24sF is an HDTV stan-
dard using progressive segmented frame scanning.
"Custom" can be used for signals of other video systems, for example, medical dis-
plays, video monitors, and security cameras. To trigger on these signals, you have to
define the pulse type and length of the sync pulse, the scanning system and the line
period.
Remote command:
TRIGger<m>:TV:STANdard on page 1192
Mode
Selects the lines or fields on which the instrument triggers. Available modes depend on
the scanning system of the selected standard.
"All fields"
Triggers 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"
Triggers on the first video line of the odd or even field. These modes
are available for interlaced scanning (PAL, PAL-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 1193
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 1194
TRIGger<m>:TV:LFIeld on page 1195
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.
Trigger types
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