Keysight Technologies N9321C User Manual page 91

Functions and Measurements
Making a Power Measurement with USB Power Sensor
Slope
Select the positive or negative slope type to determine if
the trigger event is recognized on the rising or falling edge of a
signal respectively.
Holdoff
Set the holdoff time to disable the trigger mechanism
after a trigger event occurs.
Hysteresis
Set the hysteresis to help generate a more stable
trigger by preventing triggering unless the RF power level achieves
the trigger level and the additional hysteresis value. It can be
applied to both rising and falling edge trigger generation.
Hysteresis is only available for the internal trigger source and
manual trigger level.
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