User manual

Triggers
R&S
®
RTO
66User Manual 1316.0827.02 ─ 06
Trigger level
Sets the voltage level for the trigger event. You can also drag the trigger level marker on
the display (TA or TB on the right edge of the display). The range of the trigger level is
limited in a way so that always a hysteresis for stable trigger conditions is available.
SCPI command:
TRIGger<m>:LEVel<n>[:VALue] on page 455
3.3.1.5 Runt
A runt is a pulse lower than normal in amplitude. The amplitude crosses the first threshold
twice in succession without crossing the second one. In addition to the threshold ampli-
tudes, you can define a time limit for the runt in the same way as for width triggers. For
example, this trigger can detect logic, digital, and analog signals remaining below a
specified threshold amplitude because I/O ports are in undefined state.
Polarity
Indicates the polarity of a pulse, that is the direction of the first pulse slope.
"Positive"
Selects positive going pulses.
"Negative"
Selects negative going pulses.
"Either"
Selects both positive and negative going pulses.
SCPI command:
TRIGger<m>:GLITch:RANGe on page 460
TRIGger<m>:RUNT:POLarity on page 462
Upper level
Sets the upper voltage threshold.
SCPI command:
TRIGger<m>:LEVel<n>:RUNT:UPPer on page 463
Lower level
Sets the lower voltage threshold.
SCPI command:
TRIGger<m>:LEVel<n>:RUNT:LOWer on page 463
Reference for Triggers