Agilent Technologies Signal Analyzer N9030a - Manual (Page 560)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
BW
The Filter Type menu lets you choose the filter bandwidth (–3 dB, –6 dB, Noise or Impulse) that will
be used when specifying the width of the filter. Note that for a given Gaussian filter, changing the
filter bandwidth specification does not affect the filter width at all but only the means of
specifying it. For example, the filter whose –3 dB bandwidth is 1.0 kHz is the same as the filter
whose –6 dB bandwidth is 1.41 kHz, whose Noise bandwidth is 1.06 kHz, and whose Impulse
bandwidth is 1.48 kHz. As you cycle through these various filter bandwidths the filter does not
change, but the way the filter is annotated and the value which appears in the active function
area and on the softkey does.
–3 dB (Normal)
Selects the normal Gaussian-shaped bandwidths that are defined by their –3 dB bandwidths.
560 Remote Language Compatibility Measurement Application Reference