Band/Interval Power Marker - Keysight N9912A User Manual

In addition, when a Noise Marker is displayed, the Detection method is automatically
switched to Average and
when Detection is set to Auto. Learn more on page 89.
With a Noise Marker present, the Res BW can be changed and the displayed noise
floor will also change, but the Noise Marker readout will remain about the same.
Noise Markers can be used like regular markers. A Noise Marker is distinguished
from a regular marker by (1Hz) after the marker readout value. Learn more about
regular markers on page 147.
How to measure Noise with a marker
 Press Marker to create or select a Normal or Delta marker to use to measure
 Then More.
 Then
 Then

Band/Interval Power Marker

A Band/Interval Power marker, unique to SA Mode, accumulates the power that is
measured over several adjacent data points (or 'buckets'). The range of buckets
being measured is displayed with vertical posts around the marker. This Band Span
value is selectable.
This feature is very similar to a channel power measurement (page 94).
When the frequency span is set to Zero span, the marker is referred to as an Interval
marker because it averages power over a specific time interval. In this case the range
is specified as the Interval Span. Learn more about Zero span measurements on page
83.
If the Detection method and Averaging type are set to Auto when you enable a
Band/Interval Power marker, the Detection method will change to Average (RMS)
and Averaging type will change to Power average. Other Detection methods or
Averaging type settings will usually cause measurement inaccuracy. Learn more
about Detection method on page 89, and Averaging Type on page 88.
Summary:
 In Zero span, an Interval Power Marker yields the average power over the specified
 In non-Zero span, a Band Power Marker yields the total power over the specified
How to measure Band/Interval Power with a marker
 Press Marker to create or select a Normal or Delta marker to use to measure
 Then press
 Then
 Then
 Then
 Then choose from the following:
SA (Spectrum Analyzer) Mode
PAvg
Noise.
Marker Function
Noise ON OFF.
time interval.
frequency range.
Band/Interval Power.
More
Marker Function
Band/Int Power
Band (or Interval) Span
is shown on the FieldFox screen. This occurs only
91