Keysight Technologies 86120B, User Manual

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Programming Commands
CALCulate1 Subsystem
TRANsform:FREQuency:POINts
Sets the size of the fast Fourier transform (FFT) performed by the instrument.
Syntax
:CALCulate1:TRANsform:FREQuency:POINTs{?| {<integer> | MINimum | MAXimum}}
<integer> Sets FFT size. Must be either 34123 or 4268. Other values result in an
error.
Constant Description
MINimum 4,268
MAXimum 34,123
Attribute Summary Non-sequential command
Preset State: array size set to 34,123
*RST State: 34,123
SCPI Compliance: instrument specific
Description A NORMAL updated display corresponds to an FFT size of 34,123. A FAST updated
display corresponds to an FFT size of 4,268. These values are a subset of the uncor-
rected-data buffer shown in the figure that is located in
“Making Measurements” on
page 85 . Changing the number of points causes the instrument to reprocess the cur-
rent set of data.
The query form of the command returns the number of points in the data set. This is
the number of measurement points that will be returned by the CALC1:DATA?
query.
Non-sequential command
Always use an *OPC? query or a *WAI command to ensure that this command
has the time to complete before sending any more commands to the instrument.
Refer to “Always force the Keysight 86120B to wait for non-sequential com-
mands” on page 92
for more information.