Cisco uBR-MC28U User manual

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DOC-7815730=
OL-19040-01
QUICK START GUIDE
Installing Cisco uBR-MC28U/X
and uBR-E-28U Cable 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-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
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).
88984
US0
US1
US2
US3
US4
US5
US6
US7
ENABLED
DS0-RF
DS1-RF
uBR- MC28U
Figure 2 Domain 0 and Domain 1
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.
88983
US2
US4
US5
US6
US7
ENABLED
DS0-RF
DS1-RF
uBR - MC28U
US1
US0
US3
Domain 0 Domain1

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
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
Step 4 Grasp the handle and carefully pull the
card out of its slot (see Figure 4).
+42 dBmV
US2
US4
US5
US6
US7
ENABLED
DS0-IF
DS1-IF
uBR - MC28X
US1
US0
US3
88993
Upconverter
Attenuator
Cable
Connector
88982
US0
US1
US2
US3
US4
US5
US6
US7
ENABLED
DS0-RF
DS1-RF
uBR- MC28U
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
7 Technical Specifications
Ta b l e 1 L E D s / S t a t u s
LED/Status Description
ENABLED—green
ENABLED—off
Card operating normally
Card not enabled
US—green
US—off
Upstream enabled
Upstream not enabled
DS—green
DS—off
Downstream enabled
Downstream not enabled
Ta b l e 2 Te c h n i c a l S p e c i f i c a t i o n s
Description Order Num/ Specifications
Cisco uBR-MC28U,
with upconverter
Cisco uBR-MC28X,
without upconverter
Cisco uBR-E-28U,
with upconverter
UBR-MC28U,
UBR-MC28U=
UBR-MC28X,
UBR-MC28X=
UBR-E-28U
UBR-E-28U=
Blank covers UBR-MC-COVER=
Weight—MC28U/E-
28U
Weight—MC28X
6 lbs (2.72 kg)
4.75 lbs (2.15 kg)
Power consumption
MC28U/E-28U
MC28X
80 Watts (273 BTU/h)
50 Watts (170.6 BTU/h)
88985
US2
US4
US5
US6
US7
ENABLED
DS0-RF
DS1-RF
uBR - MC28U
US1
US0
US3
Downstream
LEDs
DS0-DS1
Upstream
LEDs
US0-US7
Enabled
LED
8 Related Documentation
•Cisco uBR7200 Series Universal Broadband
Router Hardware Installation Guide
•Cisco uBR7200 Series Cable Interface Line
Card Hardware Installation Guide
•For the 1–year warranty information, visit the
following URL:
http://www.cisco.com/en/US/products/prod_w
arranties_listing.html
Output—MC28U/E-
28U
Output—MC28X
+50 to 61 dBmV at RF
+42 dBmV at IF (+/-2 dB)
Modulation
Upstream (US0–US7) QPSK 8–, 16–, 32–,
64–QAM
Downstream
(DS0–DS1)
64–QAM, 256–QAM
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.
Table 2 Technical Specifications (continued)
Description Order Num/ Specifications