Rohde & Schwarz RTM20 Series, User Manual

Page: 61 / 499

Triggers
R&S
®
RTM20xx
46 User Manual 1317.4726.02 ─ 01
Time t
Sets the reference time, the nominal value for comparisons ti<t, ti>t, ti=t, ti
≠
t.
Remote command:
​
TRIGger:
​
A:
​
WIDTh:
​
WIDTh
​
on page 306
Variation
Sets a range
Δ
t to the reference "Time t", if comparison is set to "ti=t" or "ti
≠
t". The instru-
ment triggers on pulses inside or outside the range ti
±Δ
t.
Remote command:
​
TRIGger:
​
A:
​
WIDTh:
​
DELTa
​
on page 306
Time t1, Time t2
Set the lower and upper time limits defining the time range if "Inside" or "Outside" is set
for comparison. "Time t" and "Variation" are adjusted accordingly.
Find level
Sets the trigger level automatically to 0.5 * (MaxPeak – MinPeak) .
3.3.2.5 Video
The video or TV trigger is used to analyze analog baseband video signals. You can trigger
on baseband video signals from standard definition and high definition standards.
The trigger level is determined and set automatically by the instrument.
First select the standard and the signal polarity, then decide to trigger on lines or fields
and enter the specific settings.
Most video signals have an output impedance of 75
Ω
. The channel inputs of the
R&S RTM have an input impedance of 50
Ω
or 1 M
Ω
. Make sure to provide the adequate
matching to ensure amplitude fidelity. A simple 75
Ω
feed-through termination combined
with 1 M
Ω
oscilloscope inputs is suitable for most applications.
Standard ........................................................................................................................46
Signal ............................................................................................................................47
Trigger On .....................................................................................................................47
Line ...............................................................................................................................47
All Lines .........................................................................................................................47
Frame ............................................................................................................................48
Standard
Selects the color television standard.
Reference for Triggers