Averaging; Video Bandwidth - Agilent Technologies N9913A User Manual

Averaging

Averaging helps to reduce the effects of random noise on a measurement. The
more measurements that are averaged, the greater the amount of noise
reduction. Averaging is allowed for all pulse measurements.
Averaging is performed in the USB Power Sensor before the data is sent to the
FieldFox.
Annotation in the left pane shows the state of the Average setting. When Manual
is selected, the 'Num of Averages' is setting is also shown.
How to set Averaging
 Press BW 2.
 Then
 Then choose from the following:


Video Bandwidth

The Video Bandwidth setting enables an FIR (finite impulse response) filter
within the USB Power Sensor. The filter setting affects the appearance of the
trace results.
Video Bandwidth is allowed for all pulse measurements
How to set Video Bandwidth
 Press BW 2.
 Then
 Then choose from the following:
Pulse Measurements Mode - Option 330
Enable Offset. When only trace 1 is visible,
Offset ON
o
the left of the trace.
Enter a value by which all amplitude values will be offset. This
Offset Val
o
can have the effect of virtually removing a component from the
measurement path. A positive value compensates for a component with loss.
A negative value compensates for a component with gain. Offset values are
limited to +/- 100 dB.
Averaging
Averaging is set to a reasonable value by the USB Power Sensor.
Auto
o
Averaging is set to the value specified in the 'Num Averages' setting.
Man
o
Averaging is OFF
Off
o
Num Averages Select a value using the numeric keypad, then press Enter.
Video Bandwidth
Video Bandwidth is disabled.
Off
o
Similar to a low pass filter, ripple in the pass band is minimized but
Low
o
allows higher side-lobes on the filter skirt.
Smooth pass band with reasonable transition ripple.
Medium
o
The pass band ripple is similar to the OFF setting, but the transition
High
o
skirts are smoother.
appears to
Offset ON
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