Ametek BPS Series Programming Manual Manuale Utente Pagina 64

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AMETEK Programmable Power BPS / MX / RS Series SCPI Programming Manual
64 Manual P/N 7003-961 Rev AA
MEASure:CURRent:CREStfactor?
FETCh:CURRent:CREStfactor?
Phase Selectable
These queries return the output current crest factor. This is the ratio of peak output current
to rms output current.
Query Syntax MEASure[:SCALar]:CURRent:CREStfactor?
FETCh[:SCALar]:CURRent:CREStfactor?
Parameters None
Examples MEAS:CURR:CRES? FETC:CURR:CRES?
Returned Parameters <NR2>
Related Commands INST:NSEL
MEASure:CURRent:HARMonic? [3Pi Controller Only]
FETCh:CURRent:HARMonic? [3Pi Controller Only]
Phase Selectable
These queries return the rms amplitude of the Nth harmonic of output current. The
parameter is the desired harmonic number. Queries sent with a value of 0 return the dc
component. A value of 1 returns the fundamental output frequency. Harmonic frequencies
can be queried up to the fundamental measurement bandwidth of the measurement system:
MX Series I: 25.6 microseconds for single-phase mode and 76.8 microseconds for three-
phase mode.
MX/RS Series II: 10.4 microseconds for single-phase mode and 31.2 microseconds for
three-phase mode.
Thus the maximum harmonic that can be measured is dependent on the output frequency.
Any harmonics that represent frequencies greater than above frequencies are returned as 0.
Query Syntax MEASure[:SCALar]:CURRent:HARMonic[:AMPLitude]?<NRf>
FETCh[:SCALar]:CURRent:HARMonic[:AMPLitude]?<NRf>
Parameters 0 to 50
Examples MEAS:CURR:HARM? 3
FETC:CURR:HARM? 1
Returned Parameters <NR2>
Related Commands INST:NSEL
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