Comtech EF Data CDD-880, Installation And Operation Manual

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CDD-880 Multi Receiver Router MN-CDD880
Ethernet-based Remote Product Management Revision 2
6–22
Consult your LNB adjunct product datasheet or its Installation and Operation
Manual for the LO Frequency.
•
Rx L-Band Frequency (950 to 2150 MHz for L-Band, 50 to 180 MHz for IF) – Enter the L-Band
or IF-Band frequency in MHz. Click [Submit] .
Individual Demodulator Settings
The upper range of Data and Symbol Rate selection requires activation of the
optional ‘RECEIVE DATA RATE’ FAST Feature.
The HTTP Interface polls current operations and populates this section with the configured
demodulators (i.e., Demod #1 through Demod #12 ). If a slot is polled as empty or otherwise
unrecognizable, this page does not display the assigned row. During operation, some
parameters are automatically controlled – either by the ACM algorithm or by the VMS – when
executing dSCPC switches. During these times, some page functionality becomes disabled and
affected features display information on a read-only basis.
For each operating demodulator, note the following selections, on a per-column basis (the
acceptable/valid operating ranges for items in this section are provided in parentheses). From
left to right:
Column Description
Demod #
This is the available "FILLED" demodulator slot (automatically assigned in pairs per each
installed dual demodulator card).
Demod Enable Click this option button to enable the slot. Click [Submit] to execute this operational change.
Rx Symbol Rate (16 ksps to 4.5 Mbps) – Enter the Rx Symbol Rate in ksps, and then click [Submit] to save.
Rx Data Rate
(16 kbps to 15.350 Mbps) – Enter the Rx Data Rate in kbps, and then click [Submit] to save.
When Adaptive Coding and Modulation (ACM) is set to Enable, the Data
Rate is set automatically (manual configuration of Data Rate is
disabled), and the appearances of the Rx Data Rate and Rx MODCOD
columns change as follows:
Frequency (950 to 2150 MHz) – Enter the Rx frequency, in MHz.