5-4
Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide
OL-1984-06
Chapter 5 Cabling the RF Switch With the Cisco uBR7246VXR CMTS
RF Cable Assemblies
RF Cable Assemblies
The following sections describe the coaxial cable, header block, and F-connector assemblies required to
support N+1 redundancy between the Cisco uBR 3x10 RF Switch, the Cisco uBR7246VXR CMTSs and
the Vecima HD4040 series IF-to-RF upconverters.
Note Although you may construct and implement your own cables, we recommend using the preassembled
cables and cable bundles.
Custom cables or cable components such as header blocks, crimping tools, or connectors are available
from custom cable fabricators such as WhiteSands Engineering (telephone: 1 800-586 7377), at the
following URL:
http://www.whitesandsengineering.com/
For more information on Vecima HD4040 series IF-to-RF upconverters, go to the following URL:
http://www.vecima.com
Coaxial Cables (Single and Bundle)
The cables approved for use in the Cisco N+1 redundancy solution, are Mini Precision RG59 (95
percent) tinned copper braid with (100 percent) foil shield. This cable is serial digital interface (SDI)
rated with a 1 MHz to 3 GHz rating.
• CAB-RFSW-3x10-T (bundled cable kit:1.2-m, CMTS to RFS, F to MCX)
• CAB-RFSW-3x10-10T (bunbled cable kit:10-m, RFS to HUB, MCX to F)
• CAB-RFSW5X20TPMF (bundled cable kit, 3-m, MCX to F)
The different jacket colors are used for easy identification. The gray and brown RF cables are
preterminated with the F-connectors used to connect to the Vecima HD4040 series IF-to-RF upconverter
input. (See Figure 5-3 and Figure 5-4 on page 5-5.)
Figure 5-3 Cabling Solution for the Cisco RF Switch and Cisco uBR-MC16x Cards
To
upconverter
Alignment
pins
Header block (top)
Bevel
MCX
connectors
(not used with
the MC16 card)
MCX
connectors
103291
F-connectors
