Agilent Technologies 35670A Manual page 528

[SENSe:]
[SENSe:]WINDow[1|2|3|4][:TYPE]
Selects the type of windowing function.
Command Syntax:
Example Statements:
Query Syntax:
Return Format:
Attribute Summary:
Description:
To select a Hanning window, send WIND HANN. The beginning and end of the time record have a zero
value which forces a periodic form on the data. It is commonly used to measure random noise and
provides better frequency resolution.
To select a flattop window, send WIND FLAT. This window function is similar to the a Hanning
window, but is optimized for narrow band signals with a flatter passband. It has increased amplitude
accuracy but less frequency resolution.
To select a uniform window, send WIND UNIF. The entire time record is weighted
uniformly—effectively, a windowing function is not applied. This window function should be used for
signals which may be considered self-windowing, such as transients, bursts and periodic waveforms.
The channel specifier is ignored for the Hanning, flattop, and uniform window functions.
To select a force window, send WIND FORC. This window function is a modified uniform window. It
passes the input signal for the specified amount of time (WINDow[1|2|3|4]:FORCe) then attenuates it to
the average value of the remaining data for the remainder of the time record. Typically, the force window
is only applied to the reference channel(s).
To select the exponential window, send WIND EXP. This function attenuates the input signal at a
decaying exponential rate determined by the specified time constant (WINDow[1|2|3|4]:EXPonential).
The force window is always multiplied by the exponential window— even when the exponential window
is not selected.
You can specify the force or exponential window function for each channel with the channel specifier,
WINDow[1|2|3|4]. The default combination of force/exponential windowing (after Preset) is force
window for channel 1 and exponential window for channels 2, 3, and 4.
18-90
[SENSe:]WINDow[1|2|3|4][:TYPE] HANNing|FLATtop|UNIForm|
FORCe|EXPonential|LAG|LLAG
OUTPUT 711;"SENS:WIND:TYPE HANN
OUTPUT 711;"WINDOW FLAT
[SENSe:]WINDow[1|2|3|4][:TYPE]?
HANN|FLAT|UNIF|FORC|EXP|LAG|LLAG
Option: not applicable
Synchronization Required:
Preset State: FLAT
SCPI Compliance:
no
confirmed
command/query