User's Manual

System Configuration Guide
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Adding a Modem to the XMTS – p. 59
You may change the frequency the modem is told by the XMTS to transmit
on (labeled “Tx Frequency”), the receive frequency that the upstream RF
port expects to receive the modem’s signal on (this is labeled “Rx
frequency”), its bandwidth, modulation, and the associated downstream
channels, antenna diversity and admin status as needed.
These parameters are transmitted by the XMTS as part of the upstream
channel descriptor (UCD) sent during the DOCSIS modem initialization
process. These parameters should be determined by the system engineer
responsible for the RF planning and are outside the scope of this manual.
Figure 5-23: Selecting and Setting Upstream Channel 1 Parameters
5.
Set this to ‘up” to operate this
channel or “down” to turn it off
The modem
transmits on
this frequency
This XMTS upstream channel
will receive on this frequency
These are the XMTS
downstream channels
associated with this
XMTS upstream channel
Check this box unless your System
Engineer indicates otherwise