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Language Dictionary - 3
37
Measurement Subsystem (Arrays)
This subsystem lets you retrieve arrays containing measurements data. Only current and voltage
measurements are stored in an array. Two measurement commands are available: MEASure and FETCh.
MEASure triggers the acquisition of new data before returning the readings from the array. FETCh returns
previously acquired data from the array.
Individual outputs of a three-phase source are specified by the setting of INSTrument:NSELect.
Subsystem Syntax
MEASure | FETCh
:ARRay
:CURRent
[:DC]? Returns the digitized instantaneous current
:HARMonic
[:AMPLitude]? Returns amplitudes of the first 50 harmonics
:PHASe? Returns phase angles of the first 50 harmonics
:NEUTral
[:DC]? Returns the neutral digitized instantaneous current (3-phase only)
:HARMonic
[:AMPLitude]? Returns neutral current harmonic amplitude
:PHASe? Returns neutral current harmonic phase
:VOLTage
[:DC]? Returns the digitized instantaneous voltage
:HARMonic
[:AMPLitude]? Returns amplitudes of the first 50 harmonics
:PHASe? Returns phase angles of the first 50 harmonics
MEASure:ARRay:CURRent?
FETCh:ARRay:CURRent?
Phase Selectable
These queries return an array containing the instantaneous output current in amperes. The output voltage
and current are digitized whenever a measure command is given or whenever an acquire trigger occurs. If
digitization is caused by a measure command, the time interval between samples is determined by the
output frequency. For frequencies greater than 45Hz, the time interval is 25 microseconds. If digitization is
caused by an acquire trigger, the time interval is set by SENSe:SWEep:TINTerval, and the position of the
trigger relative to the beginning of the data buffer is determined by SENSe:SWEep:OFFSet:POINts.
Query Syntax
MEASure:ARRay:CURRent[:DC]?
FETCh:ARRay:CURRent[:DC]?
Parameters
None
Examples
MEAS:ARR:CURR? FETC:ARR:CURR?
Returned Parameters
4096 NR3 values
Related Commands
MEAS:ARR:VOLT?