Installation guide

ADC Telecommunications, Inc.
100 C
HAPTER 5: CABLING THE SYSTEM
Cabling DOCSIS and EuroDOCSIS Modules
The system supports a CableOnce (blind-mate) setup for DOCSIS and
EuroDOCSIS modules. Instead of cabling directly to the module, attach the
cables to the F connectors on the CMTS backplate that covers the back of
the slot. This means that once you cable the RF downstream port(s) and the
RF upstream ports for a particular slot, you can remove and replace DOCSIS
and EuroDOCSIS modules within that slot without having to recable them;
the cables remain fixed to the backplate.
If you have a module(s) in the chassis that is powered on and active, make
sure that the module is configured.
Before cabling a DOCSIS/EuroDOCSIS module to your cable plant, you
should configure the downstream ports with a frequency and power output
appropriate to your cable plant. If you have not done so, ensure that the
downstream port status is set to
down. For information on how to configure
DOCSIS/EuroDOCSIS modules, see the Cuda 12000 IP Access Switch
CLI-based Administration Guide and the Cuda 12000 IP Access Switch
CudaView Administration Guide.
The procedure in this section assumes:
■ You have already selected the slot in which to install the DOCSIS or
EuroDOCSIS module, as described in “Determining Module Location” on
page 77.
■ If necessary, you have already installed the CMTS backplate on the back
of the selected slot as described in “Backplates” on page 83.
Slot one consists of a permanently fixed CMTS backplate and is shipped
DOCSIS/EuroDOCSIS ready. If you are installing a DOCSIS or EuroDOCSIS
module in any other slot, you must first install a CMTS backplate onto the
back of the slot.
Do not tighten the backplate RF connectors up against the backplates
themselves. It is important that the chassis interface is permitted to float to
allow the module connectors to be inserted properly. The torque
specification for the nut that tightens the backplate RF connector to the
backplate is 8 in-lb.