Cisco Systems uBR-MC28X User Manual
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QUICKSTARTGUIDE

InstallingCisco uBR-MC28U/X

and uBR-E-28UCable Interface

Line Cards

1Purpose

2Feature Description

3Prerequisites

4Installing the Card

5Removing the Card

6Troubleshooting

7Technical Specifications

8Related Documentation

Warning

Only trained and qualified

 

personnel should be allowed to

 

install, replace, or service this

 

product; and should be properly

 

grounded before handling this

 

ESD-sensitiveproduct.

 

 

1 Purpose

This quick start guide shows you how to install a Cisco uBR-MC28cable interface line card in the Cisco uBR7200 series router.

2 Feature Description

The Cisco uBR-MC28cable interface line card improves RF performance, supports spectrum management, increases system performance and supports online insertion and removal (OIR). The line card is available in three configurations:

Cisco uBR-MC28U—withan onboard upconverter and green end tabs

Cisco uBR-MC28X—withoutan onboard upconverter and with yellow end tabs

Cisco uBR-E-28U—withan onboard upconverter and slate blue end tabs

3 Prerequisites

The Cisco NPE-400or CiscoNPE-G1or CiscoNPE-G2must be used with this card.

If you are replacing a Cisco uBR-MC28Ccard with a CiscouBR-MC28U/X/Ecard, you must reconfigure the card. We strongly recommend that you reload the Cisco 7200 series router when replacing a cable interface line card with a card of a different type.

4 Installing the Card

Note TheuBR-E-28Uis anentry-levelversion of MC28U, for the uBR7225 chassis. The extra guide pins in the line card prevents it from being plugged into a different chassis.

Step 1 Make sure that you are grounded.

Step 2 Use both hands to grasp the card by its metal carrier edges and align the card with the slot guides, component side up.

Step 3 With the metal carrier aligned in the slot guides (seeFigure 1), gently slide the card into the card slot until you can feel it seated in the backplane connectors.

Step 4 Tighten the captive screws.

Note The captive screws provide grounding for the electromagnetic interference (EMI) shielding.

Figure 1 Installing the Card in the Chassis

88984

 

 

 

 

 

 

uBR - MC28U

DS0-

DS1-

US0

US1

US2

US3

US6

US7

 

RF

RF

Note The cable interface line card insertion/removal method is the same for all Cisco uBR7200 series routers.

Cabling

Caution Do not mix upstream (US) ports in domain 0 with US ports in domain 1 (seeFigure 2).

Figure 2 Domain 0 and Domain 1

 

 

 

 

 

 

 

 

uBR - MC28U

DS0-

DS1-

US0

US1

US2

US3

US4

US5

US6

US7

 

 

RF

RF

 

 

 

 

 

 

 

 

 

 

ENABLED

 

 

 

 

 

 

88983

Domain 0

Domain1

 

Cabling the Cisco uBR-MC28U/E-28U

The Cisco uBR-MC28U/E-28Uline card has an onboard upconverter. To cable the card:

Step 1 Connect the downstream (DS) cables to the DS ports(DS0–DS1).RF DS port rings and end tabs are green (slate blue in the case ofE-28Ucard). SeeFigure 5.

Step 2 Connect the upstream cables to the US ports(US0–US7).

Cabling the Cisco uBR-MC28X

The Cisco uBR-MC28Xline card does not have an onboard upconverter. The card may require up to 10 dB of attenuation due to a higher IF output power (higher then legacy Cisco line cards). To cable the card:

Step 1 Connect the DS cables to the DS ports on the card(DS0–DS1).

IF DS port rings and end tabs are yellow. See Figure 3.

Step 2 Add RF attenuators as required to get the correct IF output. Insert the attenuator between the DS IF output cable and the upconverter. SeeFigure 3.

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© 2009 Cisco Systems, Inc. All rights reserved.

Printed in the USA on recycled paper containing 10% postconsumer waste.

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