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Chapter 3
Installing the Cisco RF Switch
Rack-Mounting the RF Switch with the Cisco uBR10012 CMTS
Depending on which CMTS you use (Cisco uBR10012 CMTS or Cisco uBR7246VXR CMTS) the
brackets are attached to the front or rear of the RF switch chassis, and the chassis is mounted at the front
or the rear of the rack.
For information about installing the RF switch with the Cisco uBR7246VXR CMTS see
the RF Switch with the Cisco uBR7246VXR CMTS, page
The inside width between the posts or mounting strips (left and right) must be at least 17 in. (44.45 cm).
Some equipment racks provide a power strip along the length of one of the mounting strips. If your rack
has this feature, consider the position of the strip when planning fastener points and ensure that you will
be able to pull any components straight out of their respective slots.
The inlet and exhaust ports for cooling air are located on the right and left of the chassis, respectively,
so multiple Cisco uBR 3x10 RF Switches can be stacked in a rack with little or no vertical clearance.
For information on the Vecima HD4040 series If-to-RF upconverters, go to the following URL:
Note
http://www.vecima.com
If you are installing an AC shelf in the same rack with the Cisco uBR10012 CMTS, refer to the
Note
documentation included with the AC shelf. The shelf is usually positioned at the bottom of the rack.
Tools and Fasteners
These tools and fasteners are required to install the mounting brackets on the Cisco uBR 3x10 RF Switch
and install the switch in a rack. Some items are included in the kit.
Bracket Installation
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Rack Installation
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Chassis Grounding
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OL-1984-06
Figure
3-1and
Four rack-mount brackets, (included)
Eight M5 x 8 mm Phillips countersunk screws (included)—To install the brackets on the switch
Number 2 Phillips screwdriver (extended length)
Eight 1/32 x 3/8 slotted screws (included)—To install the switch in the rack
7/16-inch flat-blade screwdriver (extended length)
Grounding lug (included)
Four M5 (metric) hex-head screws with locking washers
8-mm wrench or nut driver (or adjustable wrench)
Drying device
Grounding wire (4 AWG recommended)—The length of the grounding wires depends on the
location of your router within the site and its proximity to proper grounding facilities.
Heat shrink tubing–One segment, 1.5 in. (3.8 cm) length by 0.5 in. (1.2 cm) diameter
Rack-Mounting the RF Switch with the Cisco uBR10012 CMTS
Figure 3-2
illustrate the Cisco uBR10012 CMTS configuration.
3-9.
Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide
Rack-Mounting
3-3
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