Cisco uBR7200 Series Universal Broadband Routers

Installing Cisco uBR-MC16U/X and uBR-E-16U Cable Interface Line Cards

  • Viewing Options

  • PDF (205.5 KB)
  • Feedback
Quick Start Guide

Table Of Contents

Installing Cisco uBR-MC16U/X and uBR-E-16U
Cable Interface Line Cards


Feature Description


Installing the Card


Cabling the Cisco uBR-MC16U/E-16U

Cabling the Cisco uBR-MC16X

Removing the Card


Technical Specifications

Related Documentation

Quick Start Guide

Installing Cisco uBR-MC16U/X and uBR-E-16U
Cable Interface Line Cards

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

Caution You must be properly grounded before handling this ESD-sensitive product.

1 Purpose

This quick start guide shows you how to install a Cisco uBR-MC16 cable interface line card in the Cisco uBR7200 series router.

2 Feature Description

The Cisco uBR-MC16 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-MC16U—With an onboard upconverter and green end tabs

Cisco uBR-E-16U—With an onboard upconverter and slate blue end tabs

Cisco uBR-MC16X—Without an onboard upconverter and yellow end tabs

3 Prerequisites

The Cisco NPE-400 or the Cisco NPE-G1 or the Cisco NPE-G2 network processing engine must be used with this card.

If you are using the Cisco uBR-MC16 line card to replace a different type of card, you must reconfigure the MC16U/X/E card.

We recommend that you reload a 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-16U line card is an entry-level version of the uBR-MC16U line card, and fits only in the uBR7225VXR chassis.

Step 1 Make sure that you are grounded.

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

Step 3 With the metal carrier aligned in the slot guides (see Figure 1), briskly slide the card into the card slot until you feel it seat 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 and removal method is the same for all the Cisco uBR7200 series routers.


Cisco uBR-MC16U—Green tabs

Cisco uBR-E-16U—Slate blue tabs

Cisco uBR-MC16X—Yellow tabs

Figure 2 Cisco uBR-MC16U

Cabling the Cisco uBR-MC16U/E-16U

The Cisco uBR-MC16U/E-16U cable interface line card has an onboard upconverter. To cable the card:

Step 1 Connect the downstream cable to the downstream (DS) port.

The RF downstream port rings and end tabs are green for uBR-MC16U (see Figure 2) and slate blue for uBR-E-16U.

Step 2 Connect the upstream cables to the upstream ports (US0—US5).

Cabling the Cisco uBR-MC16X

The Cisco uBR-MC16X cable interface line card (not supported on Cisco uBR7225VXR) does not have an onboard upconverter. The card may require up to 10-dB of attenuation due to a higher IF output power (higher than legacy Cisco cable interface line cards). To cable the card:

Step 1 Connect the downstream cable to the downstream (DS) port on the card.

The IF downstream port ring 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 downstream IF output cable and the upconverter. See Figure 3.

Step 3 Connect the upstream cables to the upstream ports on the card (US0—US5).

Figure 3 Inserting an Attenuator

Note All upstream ports are light blue.

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).

Caution Always handle the cable interface line card by the carrier edges and handle; never touch the card's components or connector pins.

Step 5 Place the card on an antistatic surface with the component side facing up.

Note If the card is being returned to the factory, immediately place it in a static shielding bag and proper packaging for protection.

Caution For proper cooling and airflow, always install a line card cover in an empty line card slot.

6 Troubleshooting

Check the following:

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. Verify that the card has been enabled and configured for operation. The enabled LED remains off when a card has not been configured and enabled.

b. If a port is enabled but its corresponding enabled LED is still off, check to see if the card has pulled away from the backplane. Reseat the card in its slot. (You 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.

Contact Cisco TAC for further information and help. To access the Cisco TAC website, use the URL:

Figure 5 LEDs

Table 1 LEDs/Status 



Card operating normally
Card not enabled


Upstream enabled
Upstream not enabled


Downstream enabled
Downstream not enabled

7 Technical Specifications

Table 2 Technical Specifications 

Order Num/ Specifications

Cisco uBR-MC16U, with upconverter

Cisco uBR-E-16U, with upconverter

Cisco uBR-MC16X,
without upconverter




Blank covers



5.25 lbs (2.38 kg)

4.75 lbs (2.16 kg)



62 Watts (211.6 BTU/h)
47 Watts (160.4 BTU/h)

RF output power range—50 to 61 dBmV


+50 to 61 dBmV at RF

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


Upstream (US0-US5)

8-, 16-, 32-, 64-QAM

Downstream (DS)

64-QAM, 256-QAM

Frequency range


5-65 MHz
70-860 MHz

The Cisco MC16 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

Cisco uBR7200Series Universal Broadband Hardware Installation Guide

Cisco uBR7200 Series Cable Interface Line Card Installation Guide

Cisco uBR7200 Series Software Configuration Guide

Cisco IOS CMTS Cable System Messages Guide

Cisco CMTS Feature Guide

For information about the 1-year warranty, see the following URL: