RIGOL
User’s Guide for DSA1000 Series
3-23
3.11
Measuring the Carrier-to-Noise Ratio
DSA1030/DSA1030-TG that has installed the Advanced Measurement Kit option can
measure the carried-to-noise ratio. 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 signal over the C/N Ratio function
(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 C/N Ratio
(3)
Modify the C/N Ratio settings
－
Press Meas Setup
－
Press Offset Freq and enter 2 MHz.
－
Press Noise BW and enter 2 MHz.
－
Press Carrier BW and enter 2 MHz.
3.
Measurement result
The measurement results shown in the lower window are -9.55 dBm (carrier
power), -57.92 dBm (noise power) and 48. 37 dB (C/N Ratio), see figure below.
Summary of Contents for DSA1030
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