If Bandwidth; Smoothing - Keysight N9912A User Manual

NA (Network Analyzer) Mode
NA Mode Settings
— While averaging is in process, press Sweep 3 then
averaging at 1.

IF Bandwidth

The FieldFox converts the received signal from its source to a lower
intermediate frequency (IF). The bandwidth of the IF bandpass filter is
adjustable. Reducing the IF receiver bandwidth reduces the effect of random
noise on a measurement. However, narrower IF bandwidths cause longer
sweep times.
How to set IF BW
— Press BW 2.
— Then
— Then choose from the following:
— 300 Hz

Smoothing

Trace smoothing averages a number of ad jacent data points to smooth the
peak-to-peak noise values on a displayed trace. The number of adjacent data
points that are averaged is known as the smoothing aperture. Aperture is set
by specifying a percentage of the X-axis span.
Trace smoothing does NOT significantly increase measurement time.
Smoothing is used in Group Delay measurements, although it can be used with
any NA formatEXCEPT Polar or Smith Chart. Learn more about NA Mode
formats, including Group Delay, in
When enabled,
How to set Smoothing
— Press BW 2.
— Then
— Then
numeric keypad.
5- 12
— Point - Each data point is measured <n> times and averaged before
going to the next data point. On subsequent sweeps, averaging
restarts by measuring each data point again <n> times. The average
counter is not updated because data is not displayed until all the
averages have been applied.
— Point averaging is usually faster than sweep averaging. However,
you may need to increase the Point Average count to obtain the same
level of noise reduction as with sweep averaging.
IF BW.
| 1 kHz | 3 kHz | 10 kHz
Smo appears on the FieldFox screen.
Smoothing ON OFF.
Sm. Aperture and enter a value between 0 and 25 (percent) using the
Restart
| 30 kHz
"Format" on page 5-7.
Keysight N9912-90001 User's Guide
to restart the