Comtech EF Data CTOG-250 - Manual (Page 230)

CTOG-250 Comtech Traffic Optimization Gateway Revision 1
Appendix E MN-CTOG250
E–8
Figure E-3. Outbound ACM ModCod Transitions vs. Es/No Customer Margin @ 0 dB
Figure E-3 presents a practical set of ModCods based on ModCod selection. The pruned
(inactive) ModCods are shown along the baseline of the plot. The transition to the next higher
ModCod is the Es/No (spec) + Es/No Tar get Margin (user s elected) +
hysteresis (0.5 dB) + modulation impairment (user selected) , while a step
down is the Es/No (spec) + Es/No Target Marg in + modulation imp airment . In this
example, the Target Es/No Margin and Modulation Impairmen t are zero.