Chroma 61503 - Page 90

Programmable AC Source 61501/61502/61503/61504 User’s Manual
8-8
8.6.2.1 FETCH & MEASURE Sub-system
FETCh | MEASure
[ : SCALar]
: CURRent
: AC? Query the rms current
: DC? Query the DC current level
: AMPLitude : MAXimum? Query the peak current
: CREStfactor? Query the current crest factor
: INRush Query the inrush current
: FREQuency? Query the frequency
: POWer
: AC
[: REAL]? Query the true power
: APParent? Query the apparent power
: REACtive Query the reactive power
: PFACtor? Query the power factor
:VOLTage
: ACDC? Query the rms voltage
: DC? Query the DC voltage
This command lets the user get measurement data from the AC source. Two measurement
commands are available: MEASure and FETCh. MEASure triggers the acquisition of new
data before returning data. FETCh returns the previously acquired data from measurement
buffer.
FETCh [ : SCALar] : CURRent : AC?
MEASure [ : SCALar] : CURRent : AC?
Description : These queries return the rms current which is being output at
the output terminal.
Query Syntax : FETCh : CURRent : AC?, MEASure : CURRent : AC?
Return Parameters : <NR2>
FETCh [ : SCALar] : CURRent : DC?
MEASure [ : SCALar] : CURRent : DC?
Description : These queries return the DC current which is being output at
the output terminal.
Query Syntax : FETCh : CURRent : DC?, MEASure : CURRent : DC?
Return Parameters : <NR2>
FETCh [ : SCALar] : CURRent : AMPLitude : MAXimum?
MEASure [ : SCALar] : CURRent : AMPLitude : MAXimum?
Description : These queries return the absolute value of peak current.
Query Syntax : FETCh : CURRent : AMPLitude : MAXimum?,
MEASure : CURRent : AMPLitude : MAXimum?
Return Parameters : <NR2>
FETCh [ : SCALar] : CURRent : CREStfactor?
MEASure [ : SCALar] : CURRent : CREStfactor?
Description : These queries return the output current crest factor. It is the
ratio of peak output current to rms output current.
Query Syntax : FETCh : CURRent : CREStfactor?
MEASure : CURRent : CREStfactor?
Return Parameters : <NR2>