Keysight N1911A

13 TRACe Subsystem
620 N1911A/1912A P-Series Power Meters Programming Guide
TRACe[1]|2:MEASurement:INSTant:REFerence? <numeric_value>
This command returns the time instant at which the power waveform intersects
the reference level supplied as the command parameter. This allows the time
instant used to calculate the pulse parameters to be found. It also allows
calculation of transition between non-standard reference levels.
Syntax
Parameters
Example
Error Messages
– If P-Series power sensor is not present, the error –241, “Hardware Missing”
occurs.
NOTE
This command is only applicable when P-Series power sensors are used with
single or continuous triggered acquisition is selected.
1
2
:MEAS
TRAC
:INST
:REF ?
Space
numeric_value
Item Description/Default Range of Values
numeric_value Reference level in percentage
–25 to 125
TRAC1:MEAS:INST:REF? 25 This command return the time instant for
trace 1 when the power transitioned
through 25 % reference level.