Estimate Psd Ratio; Estimate Psd Ratio From Lst - Comtech EF Data CDM-570A Installation And Operation Manual

G.5.2

Estimate PSD Ratio

You can estimate PSD from a link budget using Downlink EIRP and Symbol Rate:
PSD = Downlink EIRP – 10 * Log (Symbol Rate)
PSD Ratio Example:
Carrier
A to B
B to A
PSD Ratio (@ A) = -29.99 – (-31.74) = 1.75 dB
PSD Ratio (@ B) = -31.74 – (-29.99) = -1.75 dB
G.5.2.1 Estimate PSD Ratio from LST
DoubleTalk Carrier-in-Carrier Option
CDM-570A/570AL Satellite Modem with Optional Packet Processor
Downlink EIRP Symbol Rate
27 dBW
24 dBW
G–21
Power Spectral Density
500 ksps -29.99 dBW/Hz
375 ksps -31.74 dBW/Hz
Revision 5
MN-CDM570A