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–18
o
Active
– The unit is actively transmitting (probing) to the Hub for either registration or
request for switching to dSCPC.
o
Switched – the Remote has successfully switched from ECM to dSCPC.
•
Current Tap: – Indicates current value of sequential progression of TAP message
transmission. Ranges from 0 to 255, then repeats.
• Current Slot: – The time slot number that has been assigned to this unit in the transmission
cycle for switching from ECM to dSCPC.
•
Home State Revert Timer: – The time, in seconds, that must pass without receiving
communications from the HCC (Hub Channel Controller – i.e., Demod #1 on the CDD-880,
the designated ECM controller) TAP message before this unit is reverted from dSCPC mode
back to ECM to re-establish communications settings for receiving the TAP.
This parameter
is set in the VMS.
• Probing Duration: – Amount of time, in seconds, that this unit has been transmitting to the
HCC to request registration and switchout.
• Seconds Until Next Probe:
– The time period, in seconds, before this unit will again transmit
to the HCC.
ECM Tx Statistics
This section provides the following
read-only
information:
• Total Count: – This is the total number of transmissions since the modem entered Entry
Channel Mode.
•
Successes: – This is the number of successful (entire) transmissions received by the hub.
•
Failures: – This is the number of incomplete transmissions that were detected by the hub.
•
No Detect: – This is the number of transmissions that were undetected by the hub
• Last Status: – This displays the status of the most recent transmission as Success , Failure , or
No Detect .
• Seconds since last xmit: – This is the number of seconds since the last transmission,
regardless of status.
Whenever the modem reverts from dSCPC to ECM, the statistics will clear.
•
Lists of CDM-840s with Assigned Slots (previous transmission succeeded / failed)