Triggers
R&S
®
RTO6
216
User Manual 1801.6687.02 ─ 05
Most video signals have an output impedance of 75
Ω
. The channel inputs of the
R&S
RTO6 have an input impedance of 50
Ω
or 1
M
Ω
. Make sure to provide the ade-
quate matching to ensure amplitude fidelity. A simple 75
Ω
feed-through termination
combined with 1
M
Ω
oscilloscope inputs is suitable for most applications.
Once the trigger is set correctly, you can use cursor and automatic measurements to
perform amplitude and timing measurements.
Figure 6-1: Trigger on all lines of a PAL signal with positive signal polarity, trigger level = 300 mV
Standard
Selects the TV standard or "Custom" for user-defined signals.
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 types
