User manual

Trigger
R&S
®
RTB2000
66User Manual 1333.1611.02 ─ 06
High-definition television (HDTV) standards are indicated by the number of active lines
and the scanning system:
●
"HDTV 720p"
●
"HDTV 1080p" (p for progressive scanning)
●
"HDTV 1080i" (i for interlaced scanning)
Remote command:
TRIGger:A:TV:STANdard on page 289
Signal
Selects the polarity of the signal. Note that the sync pulse has the opposite polarity. If
the video modulation is positive, the sync pulses are negative. If the modulation is neg-
ative, sync pulses are positive. The edges of the sync pulses are used for triggering,
therefore incorrect polarity setting causes a sporadic triggering by the video informa-
tion.
T
T
Figure 5-6: Positive video signal with negative bi-level sync pulse (SDTV, left) and negative signal
with positive tri-level sync pulse (HDTV, right)
Remote command:
TRIGger:A:TV:POLarity on page 289
Mode
Selects from the following the trigger conditions:
"All Frames"
The oscilloscope triggers on the beginning of all video signal frames.
"Odd Frames"
The oscilloscope triggers on the beginning of video signal frames with
an odd frame number.
"Even Frames"
The oscilloscope triggers on the beginning of video signal frames with
an even frame number.
"All Lines"
The oscilloscope triggers on the beginning of all video signal lines.
"Line Number"
Enables triggerin on an exact "Line" number.
Remote command:
TRIGger:A:TV:FIELd on page 289
Line
Sets an exact line number if "Mode" is "Line Number". The oscilloscope triggers exactly
on the beginning of the selected line in any field.
Remote command:
TRIGger:A:TV:LINE on page 290
Video Trigger