background image

13

Connecting the Chassis to Ground

Before connecting power and turning on the router, you must provide an adequate ground connection for your system. Two M5 
ground receptacles provide a chassis ground connection for electrostatic discharge (ESD) and for your safety. A grounding lug 
mount is provided on the rear of the chassis. The mounting nuts are in the lower right corner of the rear of the chassis. (See 

Figure 8

.)

Figure 8

Ground Lug Location

The building installation should provide a means for connection to the protective earth, and the equipment must be connected 
to that means.

Before installing the equipment, you must check whether the socket-outlet from which the equipment is to be powered provides 
a connection to the building protective earth.  If not, arrange for the installation of a protective grounding conductor from the 
protective grounding terminal on the equipment to the protective earth wire in the building.

Warning

High leakage current—earth connection essential before connecting to system power supply

Statement 342

Warning

Use copper connectors only. 

Statement 1025

Warning

This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence of 
a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if 
you are uncertain that suitable grounding is available. 

Statement 1024

Caution

The Cisco uBR7225VXR router installation must comply with all applicable codes and is approved for use with 
copper conductors only. The ground bond fastening hardware should be of compatible material and preclude 
loosening, deterioration, and electrochemical corrosion of hardware and joined material. Attachment of the chassis 
ground to a headend, hub, or other interior ground system should be made with a 6-AWG, copper ground 
conductor at a minimum.

1

Ground lug location

270534

uBR7225

-VXR

uBR7225

-VXR

1

Summary of Contents for UBR7225VXR

Page 1: ...rmination System CMTS solutions The router allows high speed data services to be packaged similar to basic cable television service or video fare The Cisco uBR7225VXR router Supports data and packetized voice connectivity over a bidirectional cable television and IP backbone network Supports high speed Internet access IP telephony and Virtual Private Network VPN applications Supports PacketCable 1...

Page 2: ...uirements may apply for direct connection to the Cable Distribution System This product may connect to the Cable Distribution System ONLY through a device that is approved for direct connection Statement 1078 For translations of the warnings used in this document see the Regulatory Compliance and Safety Information for Cisco uBR7200 Series Universal Broadband Routers document that comes with this ...

Page 3: ...t 2 Gigabit Ethernet 0 2 6 Auxiliary port 3 Gigabit Ethernet 0 3 7 AC input power supply 2 4 Network processing engine 8 AC input power supply 1 270489 uBR7225 VXR U S 2 U S 4 U S 5 U S 6 U S 7 U S 1 U S 0 U S 3 U S 2 U S 4 U S 5 U S 1 U S 0 U S 3 uBR MC28U uBR MC16U D S 0 R F D S 1 R F D S 0 R F S L O T 1 S L O T 2 1 2 270490 uBR7225 VXR uBR7225 VXR 1 2 3 4 5 8 7 6 ...

Page 4: ...lation Site Preparation Check the following Site is capable of maintaining an ambient temperature of 32 to 104 oF 0 to 400C Site power is available and adequate Cabling requirements type distance Rack mounting requirements working space proper airflow Site Environment Warning This unit is intended for installation in restricted access areas A restricted access area can be accessed only through the...

Page 5: ...e documentation and software documentation if ordered b Optional equipment that you ordered such as transceivers GBICs flash cards cables or special connectors Step 2 Check that all equipment you ordered is installed in the chassis Step 3 Ensure that the system configuration matches the packing list Specification Minimum Maximum Temperature ambient operating 32 F 0 C 104 F 40 C Humidity ambient no...

Page 6: ...ion and periodically after installation to ensure that you are receiving clean power Install a power conditioner if necessary Provide proper grounding A grounding lug mount is provided on the rear of the chassis Make sure that the frame ground is tied to a single building ground Use a 6 AWG copper ground conductor minimum requirement when attaching the chassis ground to a headend or other interior...

Page 7: ...sues intermittent contact in the headend environment Workbench and Tabletop Installation Guidelines When installing the router on a workbench or tabletop check the following There is at least 3 inches 7 72 cm of clearance at the inlet and exhaust vents the right and left sides of the router There is approximately 23 25 inches 59 06 cm of clearance at the front and 19 inches 48 3 cm at the back of ...

Page 8: ...ay be installed on a tabletop or rack mounted A rack mount kit ships from the factory with each router The rack mount kit includes the hardware used to mount the router in a standard 19 inch equipment rack or Telco type rack Attaching the Rack Mount Brackets Before installing the chassis in the rack you must install rack mount brackets on each side of the front middle or rear of the chassis See Fi...

Page 9: ...e a number 2 Phillips screwdriver to tighten the screws Step 4 Repeat Step 1 through Step 3 for the other rack mount bracket Attach the Rack Mount Brackets to the Front of the Chassis To install the rack mount brackets on the chassis for a front rack mount configuration complete the following steps Step 1 Locate the threaded holes in the front sides of the chassis Note The Cisco uBR7225VXR chassis...

Page 10: ...ack mount bracket to the threaded holes in one side of the chassis as shown in Figure 6 Use the available set of holes only one set is available to align the bracket to the threaded holes in the sides of the chassis Note The Cisco uBR7225VXR chassis has only five holes in the rack mount brackets You must use four holes for the front rack mount and middle rack mount and five holes for the rear moun...

Page 11: ...wing steps to install the Cisco uBR7225VXR router on a workbench or tabletop Step 1 Remove any debris and dust from the workbench or tabletop and the surrounding area Step 2 On the chassis ensure that all captive screws on the network processing engine the line cards and each power supply are tightened Step 3 Add the five rubber feet supplied with the accessory kit to the base of the chassis Five ...

Page 12: ...ot designed to support the weight of the unit Statement 1032 To install the chassis in the rack complete the following steps Step 1 On the chassis ensure that the captive installation screws on all the router components are tightened Step 2 Make sure that your path to the rack is unobstructed If the rack is on wheels ensure that the brakes are engaged or that the rack is otherwise stabilized Cauti...

Page 13: ...nding terminal on the equipment to the protective earth wire in the building Warning High leakage current earth connection essential before connecting to system power supply Statement 342 Warning Use copper connectors only Statement 1025 Warning This equipment must be grounded Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor Contact...

Page 14: ...uide at the following URL http www cisco com en US docs cable cmts ubr7200 ubr7225vxr installation guide uBR7225VXR_HIG html Note The DC input power supply is not supported on the Cisco uBR7225VXR router Warning This unit might have more than one power supply connection All connections must be removed to de energize the unit Statement 1028 Warning Read the installation instructions before connecti...

Page 15: ...L http www cisco com en US products hw cable ps2217 prod_installation_guides_list html Console and Auxiliary Port Connection Equipment The console port is a DCE DB 25 receptacle for connecting a data terminal which you use to configure the interfaces and bring up the Cisco uBR7255VXR router The auxiliary port is a DTE DB 25 plug for connecting a modem or the other DCE device such as a channel serv...

Page 16: ...Ds on each power supply turn on indicating normal power supply functionality Step 2 Listen for the fans you should immediately hear them operating In a very noisy environment also look for air movement around the chassis to verify that the fans are operating If the Cisco uBR7225VXR router was recently switched off it might take up to 90 seconds for the power supply to restart and the fans to start...

Page 17: ...tp www cisco com en US support index html Search cable products field notices at the following URL http www cisco com en US support tsd_products_field_notice_summary html 9 Related Documentation Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide at the following URL http www cisco com en US products ps8474 prod_installation_guides_list html Cisco uBR7200 Series Universal Broad...

Page 18: ...in Cisco Product Documentation as a Really Simple Syndication RSS feed and set content to be delivered directly to your desktop using a reader application The RSS feeds are a free service and Cisco currently supports RSS version 2 0 ...

Page 19: ...co Systems Cisco Systems Capital the Cisco Systems logo Cisco Unity Enterprise Solver EtherChannel EtherFast EtherSwitch Fast Step Follow Me Browsing FormShare GigaDrive HomeLink Internet Quotient IOS iPhone IP TV iQ Expertise the iQ logo iQ Net Readiness Scorecard iQuick Study LightStream Linksys MeetingPlace MGX Networkers Networking Academy Network Registrar PIX ProConnect ScriptShare SMARTnet ...

Page 20: ...20 ...

Reviews: