Cisco Systems Network Card uBR MC28U User Manual

Figure 2  
Domain 0 and Domain 1  
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.  
1 Purpose  
uBR - MC28U  
This quick start guide shows you how to install a  
Cisco uBR-MC28 cable interface line card in the  
Cisco uBR7200 series router.  
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.  
Domain 0  
Domain1  
2 Feature Description  
Step 4 Tighten the captive screws.  
Cabling the Cisco uBR-MC28U/E-28U  
QUICK START GUIDE  
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:  
The Cisco uBR-MC28U/E-28U line card has an  
onboard upconverter. To cable the card:  
Note  
The captive screws provide grounding for  
the electromagnetic interference (EMI)  
shielding.  
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.  
Cisco uBR-MC28U—with an onboard  
upconverter and green end tabs  
Figure 1  
Installing the Card in the Chassis  
Cisco uBR-MC28X—without an onboard  
upconverter and with yellow end tabs  
Step 2 Connect the upstream cables to the US  
ports (US0–US7).  
Cisco uBR-E-28U—with an onboard  
upconverter and slate blue end tabs  
InstallingCisco uBR-MC28U/X  
and uBR-E-28UCable Interface  
Line Cards  
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:  
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.  
Step 1 Connect the DS cables to the DS ports on  
the card (DS0–DS1).  
uBR - MC28U  
IF DS port rings and end tabs are yellow.  
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.  
Note  
The cable interface line card  
insertion/removal method is the same for  
all Cisco uBR7200 series routers.  
4 Installing the Card  
Americas Headquarters  
Cisco Systems, Inc.  
170 West Tasman Drive  
San Jose, CA 95134-1706  
USA  
Tel: 408 526-4000  
800 553-NETS (6387)  
Fax: 408 527-0883  
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.  
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.  
Cabling  
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)  
Caution  
Do not mix upstream (US) ports in  
domain 0 with US ports in domain 1  
© 2009 Cisco Systems, Inc. All rights reserved.  
Step 1 Make sure that you are grounded.  
Printed in the USA on recycled paper containing 10% postconsumer waste.  
DOC-7815730=  
OL-19040-01  
 
           

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