Cisco Systems UBR-3X10 manual Cmts

Chapter 3 Installing the Cisco RF Switch

Rack-Mounting the RF Switch with the Cisco uBR7246VXR CMTS

Rack-Mounting the RF Switch with the Cisco uBR7246VXR

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. Figure 3-3illustrates Cisco uBR7246VXR CMTS configurations.

For information about installing the RF switch with the Cisco uBR10012 CMTS see Rack-Mounting the RF Switch with the Cisco uBR10012 CMTS, page 3-3.

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.

Note For information on the Vecima HD4040 series If-to-RF upconverters, go to the following URL:

http://www.vecima.com

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

•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)

Rack Installation

•Eight 1/32 x 3/8 slotted screws (included)—to install the switch in the rack

•7/16-inch flat-blade screwdriver (extended length)

Chassis Grounding

•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

Cisco uBR-3x10 RF Switch Hardware Installation and Cabling Guide

OL-1984-06 3-9