Keysight Technologies N9321C, User Manual

Page: 101 / 220

93
Functions and Measurements
Measuring Channel Power
Measuring 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:
Please refer to the procedures below to set a channel power
measurement.
1 Press
Meas
> Channel Power
to select the channel power
measurement mode
2 Press
Standard Customize
to choose the radio standard.
3 There are four wireless standard options: WCDMA, CDMA, LTE,
GSM. Press
WCDMA
as an example.
Once the standard is set, the integration bandwidth and span will
be automatically set according to the standard.
RBW
k span    
n
---------------------------- =