If Bandwidth; Smoothing; Single/Continuous - Agilent Technologies FieldFox N9913A User Manual

How to set Averaging
 Press BW 2.
 Then
 Enter a value using the numeric keypad. Enter 1 for NO averaging.
 Press Enter.
 Then
 While averaging is in process, press Sweep 3 then

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:


Smoothing

Trace smoothing averages a number of adjacent 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
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 format EXCEPT Polar or Smith Chart. Learn more about NA Mode
formats, including Group Delay, on page 42.
When enabled,
46
Average <n>
where <n> is the number of measurements to average.
Average Mode
Choose from the following:
Sweep - Each data point is based on the average of the same data point
o
being measured over <n> consecutive sweeps. The average counter shows
the number of previous sweeps that have been averaged together to form the
current trace. When the counter reaches the specified count, then a 'running
average' of the last <n> sweeps is displayed.
Point - Each data point is measured <n> times and averaged before going to
o
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
o
need to increase the Point Average count to obtain the same level of noise
reduction as with sweep averaging.
averaging at 1.
IF BW
10 Hz | 100 Hz | 1 kHz | 10 kHz | 100 kHz
More 30 Hz | 300 Hz | 3 kHz | 30 kHz
Smo
appears on the FieldFox screen.
Restart
to restart the
aperture. Aperture is set by
FieldFox User's Guide