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Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide
OL-1984-06
Chapter 5 Cabling the RF Switch With the Cisco uBR7246VXR CMTS
Connecting the Cables (Cisco uBR-MC28x Line Card)
Figure 5-14 Cabling the Protect Line Cards (MC28C)
Cabling DS Ports to the Input Ports on the Upconverter
This section describes cabling from the Cisco uBR7246VXR line cards DS ports to the upconverter.
Note The Cisco uBR-MC28U cable interface line cards have onboard upconverters and are cabled directly to
the DS ports (F, M, or G) on the RF switch.
Equipment
• 5 cable bundles —(F-connector to F-connector—multicolor)
To cable the DS ports to the upconverter, complete the following steps. Refer to Figure 5-15 on
page 5-21, and Table 5-15, Table 5-16, and Table 5-17 on page 5-22.
Step 1 Connect the cables to the downstream connectors (DS0, DS1) on the line cards (LC1–LC4).
Step 2 Secure the cables with cable wrap, and run the cable bundles up the right side of the equipment rack.
Step 3 Pull the cable bundle through the space between the VXR1 router and the RF switch. Add a 10-dB
attenuator to the DS cables, if necessary.
Step 4 Connect the cables to the input ports (top) on the upconverter.
Step 5 Repeat Step 1 through Step 4 for each DS0 and DS1 port on the Cisco uBR7246VXR routers (VXR2
through VXR5).
Figure 5-15 on page 5-21 shows cabling for the upconverter.
• From the DS ports of the line cards to the upconverter—multicolored cables
• From the upconverter to the RF switch—gray and brown cables
95822
P1A-P1H
LC4 LC3
RFS-1
P2A-P2H
LC2 LC1
RFS-2