Estimating Psd Ratio From Satmaster; Estimating Psd Ratio Using Spectrum Analyzer - Radyne DMD20 Installation And Operation Manual

DMD20/20LBST Universal Satellite Modem

3.15.13.2 Estimating PSD Ratio from Satmaster

3.15.13.3 Estimating PSD Ratio Using Spectrum Analyzer

PSD Ratio or CnC Ratio can also be estimated using a Spectrum Analyzer capable of integrating
the signal power in a given bandwidth.
CnC Ratio (in
dBm) – Power
PSD Ratio (in dB) = (Power
(in Hz))
= CnC Ratio – 10 log (BW
If the two carriers have same Symbol Rate / Bandwidth, then the CnC Ratio is same as the PSD
Ratio.
MN-DMD20-20LBST Revision 14
(in dBm)
C2
– 10 log BW
C1
(in Hz)) – (Power
C1
/ BW )
C1 C2
Theory of Operation
dB) = Power (in
C1
– 10 log BW
C2 C2
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