Chapter 2 81
Front-Panel Key Reference
BW/Avg
Averages signal amplitudes across measurement points to reduce
variations for noisy signals.
ā¢ VBW filtering.
Filtering the video is a form of averaging the video signal.
When trace average is on (
BW/Avg, Average (On), the Average Type is
shown on the left side of the display. When
Avg Type (Auto) is selected,
the analyzer chooses the type of averaging to be used as shown in
Figure 2-2 on page 76. When one of the average types is selected
manually, the analyzer uses that type without regard to the other
analyzer settings and sets
Avg Type to Man.
Key Access:
BW/Avg
Video Avg
Video averaging averages the data as appropriate for
the y-axis scale. When
Avg Type, Video Avg is selected,
VAvg appears on the left side of the analyzer display if
Average is On.
Key Access:
BW/Avg, Avg Type
Pwr Avg
Power averaging is performed by converting the trace
data from logarithmic to linear power units, and then
averaging the power trace data. When
Avg Type, Pwr
Avg
is selected, PAvg appears on the left side of the
analyzer display if
Average is On.
Key Access:
BW/Avg, Avg Type
EMI Res BW
Accesses the EMI Res BW menu keys and allows you to choose between
6 dB bandwidths of
120 kHz, 9 kHz and 200 Hz. The 200 Hz bandwidth is
only available if Option 1DR (narrow resolution bandwidth) is installed
and the span is less than 5 MHz. (Option 1DR is available with Agilent
ESA-E Series only (E4401B, E4402B, E4404B, E4405B and E4407B.))
This function is set to
None when the resolution bandwidth is set to any
other value using the
Resolution BW key.
Key Access:
BW/Avg
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