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IEC Mode Command Summary - E
171
FORMat
This command specifies the response data format for the following queries:
MEASure:ARRay:CURRent:DC?
MEASure:ARRay:VOLTage:DC?
MEASure:ARRay:CURRent:HARMonic[:AMPLitude]?
MEASure:ARRay:VOLTage:FLUCutations:ALL?
MEASure:ARRay:VOLTage:FLUCutations:FLICker?
MEASure:ARRay:VOLTage:FLUCutations:PST?
When ASCii is selected, the response format for these queries is NR3 Numeric Response Data. This
format is selected at *RST. The only valid argument for <length> is 0, which means that the ac source
selects the number of significant digits to be returned.
When REAL is selected, the response format is Definite Length Arbitrary Block Response Data. The data
within the Arbitrary Block is coded as IEEE single precision floating point, with 4 bytes per value. The
second argument to the FORMat:DATA command specifies the number of bits in the returned data. Only
the value 32 is permitted in ac source instruments. The byte order within a single value is determined by
the FORMat:BORDer command. Definite Length Arbitrary Block Response Data format begins with a
header that describes the number of data bytes in the response. The header begins with a pound sign,
followed by a single non-zero digit that defines the number of digits in the block length, followed by the
digits contained in the block.
For example: The response to the query "MEAS:ARR:CURR:HARM? 1" which returns 45 numeric values
when SYSTem:CONFigure is set to IEC would be as follows:
’#’ ’3’ ’1’ ’8’ ’0’ <byte1> <byte2> ... <byte180> <newline>
When a query requests a number of response blocks, each block is separated by the Response Data
Separator (comma). For example: The response to the query "MEAS:ARR:CURR:HARM? 2" given under
the same conditions described in the example above would be as follows:
’#’ ’3’ ’1’ ’8’ ’0’ <byte1> <byte2> ... <byte180> ’,’ ’#’ ’3’ ’1’ ’8’ ’0’ <byte1> <byte2> ... <byte180> <newline>
Command Syntax
FORMat[:DATA] <CRD>
Parameters
ASCii | REAL
*RST Value
ASCii
Examples
FORM REAL
Query Syntax
FORMat?
Returned Parameters
<CRD>
Related Commands
FORM:BORD MEAS:ARR:CURR:DC?
MEAS:ARR:VOLT:DC? MEAS:ARR:CURR:HARM [:AMPL]?
MEAS:ARR:VOLT:FLUC:ALL?
MEAS:ARR:VOLT:FLUC:FLIC?
MEAS:ARR:VOLT:FLUC:PST?