Measurement Examples RIGOL
User’s Guide for DSA1000 Series
3.7 Measuring the Adjacent Channel Power
DSA1030/DSA1030-TG that has installed the Advanced Measurement Kit option can
measure the adjacent channel power. In the example below, we use a generator (such
as RIGOL DG3101A) to output a sine signal with 100 MHz and -10 dBm as the signal
under measure.
Procedures:
1. Device attachment
Connect the output terminal of the generator to the RF INPUT 50Ω terminal on
the front panel of the analyzer.
2. Measure the adjacent channel power
(1) Reset the analyzer
－Press Preset
(2) Set the parameters
－Press FREQ
－Press Center Freq and enter 100 MHz.
－Press Meas
－Press Meas Fctn and enter the lower menu.
－Press Adj CH BW
(3) Modify the adjacent channel power settings
－Press Meas Setup
－Press Main CH BW and enter 2 MHz.
－Press Adj CH BW and enter 2 MHz.
－Press CH Spacing and enter 2 MHz.
3. Measurement result
The measurement results shown in the lower window are:
Main channel power: -9.55 dBm
Upper channel power: -57.85 dBm, difference with the main channel: -48.30 dBc
Lower channel power:-57.46 dBm, difference with the main channel: -47.91 dBc
See figure below.
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