Average Type; Average Count - Keysight N9912A User Manual

 Press
NOTE Trace 4 data WILL be overwritten by the FieldFox when using the Independent
Source Normalize feature (page 78) or using Field Strength antenna or cable
corrections (page 75).

Average Type

In SA Mode, there are four different processes in which Averaging is performed:
 Average Traces – Learn more on page 87.
 Detection Method Averaging – Learn more on page 89.
 Noise Marker Averaging - Learn more on page 90.
 Video BW filtering (for non-Zero Span measurements) - Learn more on page 81.
There are two types of mathematical averaging that can be performed. Select ONE of
these types and it is used for all of the above averaging processes.
How to set Average Type
 Press Meas Setup 4
 Then choose from the following:

Average Count

The Average Count setting is used mainly with the Average Trace State described
above. In this Trace State, the Average Count setting determines the number of
sweeps to average. The higher the average count, the greater the amount of noise
reduction.
When Trace (display) State is set to Average, MaxHold, or MinHold, the average
counter is shown in the left edge of the screen below the Average Type.
For all three of these Trace States, when Sweep 3
press
Hold.
How to set Average Count
 Press Meas Setup 4
88
Displays and then holds the last complete measurement trace on the
View
o
screen.
Displays no trace.
Blank
o
to return all traces to their default settings: Trace 1
Default All
(Clear/Write); all other traces (Blank).
- The FieldFox chooses the most appropriate type of averaging for the
Auto
o
current settings. When Detection Method is set to Average, a Noise Marker is
present, or a Channel measurement is active, then Power Average is ALWAYS
selected. Otherwise, Log Average is selected.
Averaging – Best for displaying Trace Averaging. LgAv is shown on the left
Log
o
side of the FieldFox screen when selected.
(Linear) Averaging – Best for measuring true power levels. Used in
Power
o
Detection Average and Noise Marker Average. Mathematically, trace noise is
2.5 dB higher than when using Log Average. PAvg is shown on the left side of
the FieldFox screen when selected.
to reset the sweep count to 1, perform <n> sweeps, then return to
Restart
is set to OFF,
Continuous
FieldFox User's Guide