Keysight Technologies C Series User Manual page 304

Fieldfox analyzers

IQ Analyzer (IQA) – Option 351

I/Q Analyzer (IQA) Mode Settings

Blackman Harris 3

Blackman Harris

Gaussian Top

Flat Top (default)

K-B (100 dB)

K-B (110 dB)

Sets the FFT filtering window (spectrum analysis

window) shape for the I/Q data. Default: Flat Top

Then select one of the following:

No windowing

Barlett windowing

This is a Hann window, sometimes called Hanning or "raised

This window has lower side-lobe peaks than the Hann window,

but has worse main-lobe flatness and poor side-lobe roll-off.

This window is similar to the three-term Blackman-Harris

window, but it has simpler fixed-form coefficients and better

side-lobe roll-off.

This is the three-term Blackman-Harris window. This has the

minimum side-lobe level for a three-term cosine window.

This is the four-term Blackman-Harris window. This has the

minimum side-lobe level for a four-term cosine window with

60 dB/decade roll-off.

This is a five-term cosine window that resembles a Gaussian

This is a four-term flat-top window.

This is the five-term flat-top window.

This is a six-term flat-top window.

This is a seven-term flat-top window.

This is an alternative six-term flat-top window.

This is an alternative seven-term flat-top window.