Cisco Systems uBR10-MC5X20S, uBR10-MC5X20H quick start Feature Description, Installing the Cables

Quick Start Guide

Caution Use an ESD-preventive wrist or ankle strap during the line card installation.

1Feature Description

The Cisco uBR10-MC5X20S, U and H cable interface line cards use 75–ohm precision video coax cables and 75–ohm MCX connectors to connect to the CMTS.

This document describes how to install and remove cables and the second generation universal cable holder (UCH2).

Figure 1 shows the cards in a Cisco uBR10012 router.

Figure 1 Cisco uBR10-MC5X20S/U/H Cards

line card accessory kits and spare cards. Or, the UCH2 is available as a spare.

Note In European markets only, you must use the quad-shielded cable kit with the Cisco uBR10-MC5X20H.

Tools required for cable installation include:

•1/4-in. slotted screwdriver and T-10 TORX driver

Also see “Tool Manufacturers and Part Numbers.”

2Installing the Cables

The UCH must be used for all Cisco uBR10- MC5X20S/U/H line card cable connections. Failure to use the UCH may cause permanent damage to the line card connectors and result in

Table 2	Port—Quad-Shielded Cable Colors
US0–US9		US0 to US9–red, white, blue, green,
		yellow, red, white, blue, green, yellow,
		respectively.
US10–US19		US10 to US19–red, white, blue, green,
		yellow, red, white, blue, green, yellow,
		respectively.
DS0–DS4		DS0 to DS4–red, white, blue, green,
		yellow, respectively.

Step 3 Insert the cable completely into the UCH. (The cables will fit loosely in the holes until the lock bar is closed in Step 5.)

Caution Do not kink the cables.

Figure 2 Inserting a Cable in the UCH2

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Cabling the

Cisco uBR10-MC5X20S/U/H Cable Interface Line Card with Universal Cable Holder—UCH2

1 Feature Description

Downstream

DS0RF

DS1RF

DS2RF

DS3RF

DS4RF

uBR10-MC5x20S-D

Upstream

US0 US1 US2 US3 US4

US5

US6

US7

US8

US9

72783

low or no RF output.

Step 1 Loosen the top screws and slide open the lock bar. (If the UCH2 is already installed in the line card, use a screwdriver to slide open the bar. See Figure 5.)

Step 2 Remove the ESD cap from a cable, and insert it into the hole in the UCH2. See Figure 2.

We recommend that the cables be installed in the UCH as shown in Table 1 and Table 2.

Caution If using quad-shielded cables, make

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Step 4 Repeat this procedure for all of the cables.

Step 5 Ensure the cables are fully inserted in the UCH2 and slide the lock bar closed completely. (The lock bar will not close if cables are not fully inserted or properly aligned.)

Step 6 Using the T-10 TORX driver tool tighten

2	Installing the Cables
3	Installing the UCH
4	Removing the UCH
5	Removing the Cables
6	Troubleshooting
7	Related Documentation

Warning	Only trained and qualified
	personnel should be allowed to
	install, replace, or service this
	equipment.

The cables come in kits that consist of cable sets and spare F connectors.

The MC5X20 dual-shielded cable kit includes:

•Two 10-bundle MCX to “F” conn., 3–m cables

•One 5-bundle MCX to “F” conn., 3–m cables

•28 spare F connectors

The MC5X20 quad-shielded cable kit includes:

•Five 5-bundle MCX to “F” conn., 3–m cables

•Five spare F connectors

The cable kits do not contain the universal cable holder (UCH); however, the UCH is available with

	sure there is no heat-shrink wrap on
	the ends by the MCX connectors.
Table 1	Port—Dual-Shielded Cable Colors
US0–US9		US0 to US9–red, white, blue, green,
		yellow, violet, orange, black, gray,
		brown, respectively.
US10–US19		US10–grey; US11–brown; US12 to
		US19–red, white, blue, green, yellow,
		violet, orange, black, respectively.
DS0–DS4		DS0 to DS4–red, white, blue, green,
		yellow, respectively.

the screws on the lock bar (maximum torque—10 in-lbs).

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