8-40 Command Reference
:FORMat :TINFormation
8 Boolean
Timestamping On/Off
This command turns on/off the time stamping of measurements. Time stamping is
always done at the start of a measurement with full measurement resolution, and is
saved in the measurement buffer together with the measurement result.
The setting of this command will affect the output format of the MEASure, READ
and FETCh queries. See the FETCH function on page 8-33 ff.
For :FETCh:SCALar?, :READ:SCALar? and :MEASure:SCALar? the readout will con
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sist of two values instead of one. The first will be the measured value and the next
one will be the timestamp value.
In :FORMat ASCii mode, both the measured value and the timestamp value will be
given as floating-point numbers expressed in the basic units (e.g. Hz - s or s - s).
In :FORMat REAL mode, the result will be given as an eight-byte block containing
the floating-point measured value, followed by an eight-byte block containing the
floating point timestamp value.
In :FORMat PACKed mode, the result will be given as an eight-byte block contain-
ing the floating-point measured value followed by an eight-byte block containing
the timestamp value expressed as a 64-bit integer (int64), the implicit unit being ps.
When doing readouts in array form, with :FETCh :ARRay?, :READ :ARRay?,or
:MEASure :ARRay? , the response will consist of alternating measurement values
and timestamp values, formatted in a similar way as for scalar readout. All values
will be separated by commas. See also the :MEASure:ARRay:TSTAmp? command
on page 8-73 for more information on the output format.
Parameters <Boolean> = (1 / ON | 0 / OFF)
Returned format: 1|0 ¿
*RST condition: OFF
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