Cisco Systems uBR-MC28U, uBR-MC28X User Manual

QUICK START GUIDE

Installing Cisco uBR-MC28U/X and uBR-E-28U

Cable Interface

Line Cards

1 Purpose

2 Feature Description

3 Prerequisites

4 Installing the Card

5 Removing the Card

6 Troubleshooting

7 Technical Specifications

8 Related 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-sensitive product.

1 Purpose

This quick start guide shows you how to install a Cisco uBR-MC28 cable interface line card in the Cisco uBR7200 series router.

2 Feature Description

The Cisco uBR-MC28 cable 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—with an onboard upconverter and green end tabs

• Cisco uBR-MC28X—without an onboard upconverter and with yellow end tabs

• Cisco uBR-E-28U—with an onboard upconverter and slate blue end tabs

3 Prerequisites

• The Cisco NPE-400 or Cisco NPE-G1 or Cisco NPE-G2 must be used with this card.

• If you are replacing a Cisco uBR-MC28C card with a Cisco uBR-MC28U/X/E card, 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 The uBR-E-28U is an entry-level version 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 (see Figure 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

DS1-RF

DS0-RF

uBR - MC28U

US7

US6

US5

US4

US3

US2

US1

US0

D E L

A N E

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 (see Figure 2).

Figure 2 Domain 0 and Domain 1

uBR - MC28U

DS0-RF

DS1-

US0

US2

US1

Domain 0

US7

US4

US3

US6

US5

Domain1

ENABLED

Cabling the Cisco uBR-MC28U/E-28U

The Cisco uBR-MC28U/E-28U line 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 of E-28U card). See Figure 5.

Step 2 Connect the upstream cables to the US

ports (US0–US7).

Cabling the Cisco uBR-MC28X

The Cisco uBR-MC28X line 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. See Figure 3.

Americas Headquarters

Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000

800 553-NETS (6387)

Fax: 408 527-0883

Cisco, Cisco Systems, the Cisco logo, and the Cisco Systems logo are registered trademarks or trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries. All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0705R)

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

88983

DOC-7815730= OL-19040-01

Step 3 Connect the US cables to the US ports on

the card (US0–US7). All US ports are light blue.

Figure 3 Inserting an Attenuator

US1

US0

Upconverter

US2

US4

US3

Attenuator

uBR - MC28X

US7

US6

US5

Connector

Cable

+42 dBmV

DS1-IF

DS0-IF

ENABLED

5 Removing the Card

To prevent the alarms from activating, administratively shut down the card using the shutdown command in interface configuration mode before removing it from the chassis.

Step 1 Make sure that you are properly

grounded.

Step 2 Disconnect all the cables from the cable

interface line card.

Step 3 Unscrew the captive installation screws on

the faceplate.

Figure 4 Removing the Card from the Chassis

88982

DS1-RF

DS0-RF

- M R B

Step 4 Grasp the handle and carefully pull the

card out of its slot (see Figure 4).

D LE B

NA E

88993

Caution Always handle the card by the carrier

edges and handle; never touch the cable interface line card’s components or connector pins. For proper cooling and airflow, always install a line card cover in an empty line card slot.

Step 5 Place the card on an antistatic surface with

its components facing upward.

Note If the card is being returned to the factory,

immediately place it in a static shielding bag and proper packaging for protection.

6 Troubleshooting

1. Make sure that the card is securely seated in the chassis.

If the captive screws do not tighten all the way, the card is not properly seated in the chassis or backplane. Carefully pull the card halfway out of the slot, reinsert it, and tighten the captive installation screws.

Caution A partially seated line card can cause

the router to reboot.

2. Are all enabled LEDs on? If yes, the system is operational.

If no, check the following possibilities:

a. If the card has been enabled and

configured for operations, the enabled LED remains on.

b. If a port is enabled but its enabled LED is

still off, check if the card has pulled away from the router. Reseat the card in its slot. (Do not have to turn off the system power to do this.} After the system reinitializes the interfaces, the enabled LED on the card should come on.

3. If the enabled LED remains off after the above checks, it is likely that the system has detected a processor hardware failure. Go to the Cisco TAC website http://www.cisco.com/tac for further information and help.

Figure 5 LEDs

Enabled

LED

uBR - MC28U

US7

US6

US5

US4

US3

US2

US1

US0

Upstream

LEDs

US0-US7

Downstream

DS0-DS1

S 0

LEDs

S 1

-R

-R F

ENABLED

Ta b l e 1 L E D s / S t a t u s

LED/Status Description

ENABLED—green ENABLED—off

US—green US—off

DS—green DS—off

Card operating normally Card not enabled

Upstream enabled Upstream not enabled

Downstream enabled Downstream not enabled

7 Technical Specifications

Ta b le 2 Te ch n ic al Sp ec if ic at io ns

Description Order Num/ Specifications

Cisco uBR-MC28U, with upconverter

Cisco uBR-MC28X, without upconverter

Cisco uBR-E-28U, with upconverter

Blank covers UBR-MC-COVER=

Weight—MC28U/E28U Weight—MC28X

Power consumption

MC28U/E-28U MC28X

UBR-MC28U, UBR-MC28U=

UBR-MC28X, UBR-MC28X=

UBR-E-28U

UBR-E-28U=

6 lbs (2.72 kg)

4.75 lbs (2.15 kg)

80 Watts (273 BTU/h) 50 Watts (170.6 BTU/h)

88985

Table 2 Technical Specifications (continued)

Description Order Num/ Specifications

Output—MC28U/E-

+50 to 61 dBmV at RF 28U Output—MC28X

+42 dBmV at IF (+/-2 dB)

Modulation

Upstream (US0–US7) QPSK 8–, 16–, 32–,

64–QAM

Downstream

64–QAM, 256–QAM (DS0–DS1)

RF output power range—50 to 61 dBmV

Frequency range

Upstream Downstream

5–65 MHz

70–860 MHz

The Cisco uBR-MC28U/X/E-28U line card is compatible with most cable systems worldwide, including but not limited to—Asia Pacific, Europe, and the Americas. See Cisco IOS release notes for more information.

8 Related Documentation

For more information, refer to the following at

Cisco.com:

• Cisco uBR7200 Universal Broadband Series

Hardware Installation Guide

• Cisco uBR7200 Series Cable Interface Line

Card Hardware Installation Guide

• Cisco uBR7200 Series Universal Broadband

Routers

• For the 1–year warranty information, visit the following URL:

http://www.cisco.com/en/US/products/prod_w arranties_listing.html