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NA (Network Analyzer) Mode
NA Mode Settings
— 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 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.
Keysight N9923-90001 User's Guide
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 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 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.
averaging at 1.
IF BW
10 Hz
100 Hz
1 kHz
|
|
|
More 30 Hz
300 Hz
3 kHz
|
|
10 kHz
100 kHz
|
30 kHz
|
Restart
to restart the
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