Tektronix FCA3000 Series, Programmer'S Manual

Page: 73 / 191

Command Descriptions
Returns NORM or SWAP
FORMat:SMAX
Sets or queries the upper limit for FETCh:ARRay? MAX command in number
of samples. The command is intended to set an upper limit for use with any
controllers or application programs that cannot read large amounts of data.
Group Format
Syntax
FORMat:SMAX <Numeric value>
FORMat:SMAX?
Arguments
Integer
N
, where 4 ≤ N ≤ 10000
Returns
<Numeric value>
FORMat:TINFormation
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[:SCALar]? query.
For FETCh:SCALar?, READ:SCALar? and MEASure:SCALar? the readout
consists of two values instead of one. The
fi rst value is the measured value and
the second value is the timestamp value.
In FORMat ASCII mode, both the measured value and the timestamp value are
given as
fl oating-point numbers expressed in the basic units (Hz or s).
In FORMat REAL mode, the result is given as an eight-byte block containing the
fl oating-point measured value, followed by an eight-byte block containing the
fl oating point timestamp value.
In FORMat PACKed mode, the result is given as an eight-byte block containing
the
fl oating-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.
FCA3000, FCA3100, MCA3000 Series Programmer Manual 2-57