User manual

Waveform Setup
R&S
®
Scope Rider RTH
54User Manual 1326.1578.02 ─ 04
The instrument triggers on the line start - the horizontal sync pulse. You can trigger on
all lines, or specify a line number. You can also trigger on the field or frame start.
2.5.5.1 Standard TV Trigger Settings
Access: SETUP key > "Trigger Type" = "Video/TV"
Standard
Selects the TV standard or "Custom" for user-defined signals.
The standards PAL, PAL-M, NTSC and SECAM are available in the instrument firm-
ware. All other standards require the advance trigger option R&S RTH-K19.
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 (or field rate for
interlaced scanning). 1080p/24sF is a HDTV standard 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.
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.
Figure 2-7: Signal with positive polarity and tri-level sync pulse
Trigger