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

 Then
 Then
 Enter a value in degrees using the numeric keypad, the ▲|▼ arrows, or the

Averaging

Averaging helps to reduce the effects of random noise on a measurement. You
specify the number of measurements to be averaged. The more measurements
averaged, the greater the amount of noise reduction. An average counter is
shown in the left edge of the screen as Avg <n> where <n> is the number of
measurements that are averaged.
Averaging can be set before or after calibration. When set before calibration,
each calibration standard is measured <n> times and averaged. More time is
needed to perform the calibration, but there will be less noise in the resulting
error terms which means that subsequent measurements will also have less
noise. In addition, noise is further reduced by continuing to average after
calibration.
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.
48
More
Phase Offset
rotary knob. Press Enter
where <n> is the number of measurements to average.
Average <n>
Choose from the following:
Average Mode
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.
to restart the
Restart
FieldFox User's Guide