Estimating Psd Ratio From Satmaster; Estimating Psd Ratio Using Spectrum Analyzer - Comtech EF Data SLM-5650A Installation And Operation Manual

SLM5650A_CDM625 Satellite Modem
DoubleTalk Carrier-in-Carrier Option
15.5.2.2

Estimating PSD Ratio from Satmaster

15.5.2.3

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 dB) = Power
PSD Ratio (in dB) = (Power
If the two carriers have same Symbol Rate / Bandwidth, then the CnC Ratio is same as the PSD
Ratio.
(in dBm) – Power
C1
– 10 log BW
C1
= CnC Ratio – 10 log (BW
(in dBm)
C2
(in Hz)) – (Power
C1 C2
/ BW )
C1 C2
15–19
Revision 8
MN-SLM5650A
– 10 log BW (in Hz))
C2