Technical data

Trigger Commands 31
Agilent Infiniium 90000 Series Oscilloscopes Programmer's Reference 787
:TRIGger:COMM:POLarity
Command :TRIGger:COMM:POLarity {POSitive | NEGative}
The :TRIGger:COMM:POLarity command directly controls the trigger slope
used for communication trigger. When set to a positive value, the rising
edge of a pulse or waveform is used to trigger the oscilloscope. When set
to a negative value, the falling edge of a pulse or waveform is used.
The polarity setting is also used to check for valid patterns. If you are
trying to trigger on an isolated 1 pattern, you should set the polarity to
positive. If you are trying to trigger on an isolated -1 pattern, you should
set the polarity to negative.
Query
:TRIGger:COMM:POLarity?
The :TRIGger:COMM:POLarity? query returns the current setting for
polarity.
Returned Format
[:TRIGger:COMM:POLarity} {POSitive | NEGative}<NL>