Agilent Technologies 6812B, 6834B manual MEASure:ARRay:CURRent:HARMonic?, SOURce:FREQ, SENSe:WINDow

IEC Mode Command Summary - E

MEASure:ARRay:CURRent:HARMonic?

This query returns an array of current harmonic magnitudes. Operation of the query is modified by the SYSTem:CONF command (see summary table under SYSTem:CONFigure). The parameter specifies the number of harmonic arrays to be returned in response to the query. If SYSTem:CONFigure specifies NORMal operation, the parameter is ignored (ie it is forced to 1). If SYSTem:CONFigure specifies IEC operation, the SOURce:FREQuency and SENSe:WINDow commands are coupled to modify operation of the measurement underlying the query as shown in the following table:

SOURce:FREQ

50Hz

50Hz

60Hz

60Hz

SENSe:WINDow	Sample Rate
RECTangular	12.8 KHz
HANNing	8.533 KHz
RECTangular	15.360 KHz
HANNing	7.680 KHz

Acquisition Window

320ms

480ms

266.7 ms

533.3 ms

Acquisition Overlap

None

50%

None

50%

SYSTem:CONFigure also impacts availability of the RMS Current, RMS Voltage, Real Power values. If SYSTem:CONFigure is set to NORMal, these values are not available. If SYSTem:CONFigure is set to IEC, the values are returned with the harmonic data. The integration time for these values equals the acquisition window period.

IEC mode operation conforms to IEC and EN requirements for compliance testing of harmonic currents (EN 60555 Part 2 and related regulations). The ac source will accept parameters in the range shown below, however, values greater or equal to (2^31)-1 will be interpreted as infinity. Record numbering begins with one. The figure below defines the structure of the data returned by this query:

Fundamental

￿

↓

40th Harmonic

Rms Current

Rms Voltage

Real Power

Record Number

Error Code

Command Syntax

Parameters

Examples

Related Commands

￿￿￿

￿￿￿40 harmonic values ￿￿￿￿

,

￿￿repeat <n> times

￿

￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿,

MEASure:ARRay:CURRent:HARMonic? <NRf+> 1 to 9.9E37

MEAS:ARR:CURR:HARM? 1024

ABORt SYST:CONF INST:NSEL SENS:WIND SOUR:FREQ

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