Res bw – Agilent Technologies Signal Analyzer N9030a User Manual
Page 549
6 RLC Swept SA Measurement Front-Panel & SCPI Reference
BW
BW
The BW key opens the bandwidth menu, which contains keys to control the Resolution
Bandwidth and Video Bandwidth functions of the instrument.
The Resolution BW functions control filter bandwidth and filter type. There are two filter types,
Gaussian and Flattop. The Gaussian filters have a response curve that is parabolic on a log scale.
The Flattop filter shape is a close approximation of a rectangular filter.
The AVERAGE functions, which appeared in the BW menu in earlier analyzers, can now be found in the
Trace/Detector menu and the Meas Setup menu. In the Trace/Detector menu, you may turn Trace
Averaging on or off for the desired traces (rather than globally as in the past); and in the Meas Setup
menu you may configure Averaging, by setting the Average Number and the Average Type.
Key Path
Front-panel key
Backwards Compatibility
Notes
In previous analyzers, the BW hardkey was labeled “BW/Avg” and included menu keys to
control the averaging behavior of the instrument, which was global.
In the X-Series, averaging is performed on a trace-by-trace basis, with a corresponding impact on
the SCPI functions. A backwards compatibility command ([:SENSe]:AVERage[:STATe])
is provided to preserve the old global behavior. See the section
for details.
The control for the Average number is now found in the Meas Setup menu. See the section
for details.
Initial S/W Revision
Prior to A.02.00
Res BW
Activates the resolution bandwidth active function, which allows you to manually set the
resolution bandwidth (RBW) of the analyzer. Normally, Res BW (Auto) selects automatic coupling
of the Res BW to Span using the ratio set by the Span:3 dB RBW key. To decouple the resolution
bandwidth, press Res BW until Man is underlined, or simply enter a different value for Res BW.
See
"More Information" on page 551
Key Path
BW
Remote Command
[:SENSe]:BANDwidth|BWIDth[:RESolution] <freq>
[:SENSe]:BANDwidth|BWIDth[:RESolution]?
[:SENSe]:BANDwidth|BWIDth[:RESolution]:AUTO OFF|ON|0|1
[:SENSe]:BANDwidth|BWIDth[:RESolution]:AUTO?
Remote Language Compatibility Measurement Application Reference
549