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Trigger
R&S
®
RTA4000
94
User Manual 1335.7898.02 ─ 08
Upper Level
Sets the upper voltage threshold for runt detection. A negative runt crosses the upper
level twice without crossing the lower level.
Remote command:
Lower Level
Sets the lower voltage threshold for runt detection. A positive runt crosses the lower
level twice without crossing the upper level.
Remote command:
Hysteresis
Hysteresis of the trigger source channel, see
Remote command:
CHANnel<m>:THReshold:HYSTeresis
Find Threshold
The instrument analyzes the signal and sets the upper and lower trigger levels. If no
level can be found, the existing values remain unchanged, and you can set the thresh-
olds manually.
6.10
Rise time trigger
The rise time trigger, also known as slew rate or transition trigger, can detect fast or
slow rising or falling edges selectively. It triggers on edges, if the rise or fall time from
the lower to higher voltage level (or vice versa) is shorter or longer as defined, or inside
or outside a specified time range. The trigger finds slew rates that are faster than
expected or permissible to avoid overshooting and other interfering effects. It also
detects very slow edges violating the timing in pulse series.
► [Trigger] > "Trigger Type" = "Risetime"
Rise time trigger