Comtech EF Data CDM-750 - Manual (Page 179)

CDM-750 Advanced High-Speed Trunking Modem Revision 2
Ethernet-based Remote Product Management MN-CDM750
6–35
substantially less than the terrestrial rate of the user traffic due to the effect of
the compression card.
• Rx ModCod and Local Es/No (ModCod / Local Es/No) – Two pieces of data are graphed
in time synchronous manner:
o The left side of the graph has a vertical key of Rx ModCod (blue).
o The right side of the graph has a vertical key of Local Es/No (red).
The Local Es/No is the Es/No of the local modem. When more than one ModCod is
received in the smallest interval period allowable by the graph, the most common
ModCod received in that time interval is displayed.
• Rx Capacity Configuration Parameters – This is a graphical representation of some of
the common configuration settings that can affect user data rate, and typically do not
change:
o Pilots On or Off
o Normal Block or Short Block
o Symbol Rate
These parameters are shown to provide you with a more complete representation of user
capacity, when looked at in conjunction with the other graphs provided on these pages.