Agilent Technologies Agilent 86120B, Руководство пользователя

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5-29
Programming Commands
CALCulate1 Subsystem
TRANsform:FREQuency:POINts
Sets the size of the fast Fourier transform (FFT) performed by the instru-
ment.
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 sub-
set of the uncorrected-data buffer shown in the figure that is located in
“Mak-
ing Measurements” on page 4-5 . Changing the number of points causes the
instrument to reprocess the current 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 Agilent 86120B to wait for non-sequential commands” on page 4-12
for more information.