User`s guide

122 N9320A Spectrum Analyzer
5 One-Button Measurements
Channel Power
Channel Power measures the power and power spectral
density in the specified channel bandwidth. A white frame
on the display indicates the edge limits of the channel
bandwidth. The user must specify the center frequency,
reference level, and channel bandwidth to be used for the
measurement.
The power calculation method used to determine the channel
power is a traditional method known as the integration
bandwidth (IBW) method. A swept spectrum is used as the
basis for this calculation. Therefore, it is important to set
the resolution bandwidth correctly before making this
measurement using the following formula:
Where k is a value between 2 and 6 and n=461 is the
number of trace points.
Figure 28 Channel Power Measurement
RBW
kspan()()
n
----------------------------=
Measurement
Result
Active Function
Area