Ceyear 4051 Series, User Manual

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4. Operating Instruction
4.2 Advanced operation guide
146
Fig. 4.64 Results of occupied bandwidth measurements
Step 8. Change the measurement parameters:
 Press
【
Meas Setup
】
.
Users can modify measurement parameters like Occupied Power %, xdB and other as needed.
4.2.12 Adjacent Channel Power
4.2.12.1 Basic concept
Adjacent Channel Power (ACP) indicates the power leaked to the adjacent channels. Adjacent channel power
can be used to measure different types of signals by selecting different wireless communication standards.
Calculate the power in bandwidth relative to each offset by selecting integration bandwidth method to execute
track scanning. Measurement results show the corresponding total power or power spectral density according
to reference type selected. User can observe the measurement results by selecting spectrum display or
cylindrical diagram display.
Having pressed
【
Measure
】
key and selected [ACP], press
【
Meas Setup
】
key to enter detailed setup
menu of measurement parameters. Press 【 Meas Control 】 key to switch continuous measurement and
singular measurement.
4.2.12.2 Measurement Example
Designate the total power and 6 groups of power offsetting channel to measure adjacent channel power. The
measurement results show ratio of power offsetting channel and the power of main channel. This section
mainly introduces the adjacent channel power measurements of W-CDMA(3GPP) (simulate a W-CDMA
signal by signal generator).
Step 1. Set signal source as below:

Set the mode as W-CDMA.