Comtech EF Data CDD-880, Installation And Operation Manual

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CDD-880 Multi Receiver Router MN-CDD880
Appendix D Revision 2
D–14
D.3.1 CDD-880 HTTP Operation – Hub Channel Controller (HCC)
Click the Configuration tab, and then the ECM tab to open the page ( Figure D-6 ).
Figure D-6. CDD-880 HTTP Interface – Configuration | ECM Page
ECM Hub Configuration
The acceptable/valid operating ranges for items in this section are provided in parentheses.
• Enable: – This feature activates Demod-1 (Rx TRAFFIC 1) on this unit to function as the ECM
Controller for a group of CDM-840s. Use the drop-down list to select operation as Enable or
Disable , and then click [Submit] to save.
•
Multicast IP: – Enter the IP address for the Multicast of the TAP message that is sent out by
this CDD-880 to all of the associated CDM-840s in that group.
•
Group ID: (0-255) – Assigning a unique Group ID number to this CDD-880 (i.e., the HCC) and
its associated CDM-840s defines the group of equipment that will respond to the output of
the controller. Enter the Group ID number for the CDD-880.
While “0” is an acceptable assignation, the preferred practical range is from 1
to 255.
•
Guard Band: (1-1000) – Enter the Amount of Transmit Off time, in milliseconds, between
slots to prevent signal overlap.
• Preamble: – This read-only value identifies the preamble length in VersaFEC frames.
• Data Slot Size:
– This
read-only
value identifies the minimum number of Versa FEC blocks in
a data slot.
•
Slots in Frame: – This
read-only
value identifies the allowable total number of slots for each
frame. When assigned slots are needed, they are taken from this pool.