Cisco 15454E-E1-75BB= Datasheet

Brand: Cisco

Model: 15454E-E1-75BB=

Category: Rack accessories

Type: Datasheet

Cisco 15454E-E1-75BB= E1-75/120 Impedance Conversion Panel provides front mount electrical connection for 42 ITU-compliant, G.703 E-1 ports. It contains 84 1.0/2.3 miniature coaxial connectors (42 for transmit, 42 for receive) to the client side and two 96-pin Molex type connectors to the FMEC 120-ohm side. Each of the 96-pin Molex type connectors connects 21 inputs and 21 outputs. Transformers in the E1-75/120 conversion panel improve decoupling from DC voltages and overvoltages.

Corporate Headquarters:

Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA

Installing the Cisco ONS 15454 SDH E1-75/120

Impedance Conversion Panel

Product Name: 15454E-E1-75BB=

This document contains a description of E1-75/120 conversion panel (“E1-75 Black Box”) features,

installation procedures, and technical specifications. Use this document in conjunction with the Cisco

ONS 15454 SDH Reference Manual and the Cisco ONS 15454 SDH Procedure Guide when working with

E1-75/120 conversion panels.

This document contains the following sections:

• E1-75/120 Impedance Conversion Panel Description, page 2

• E1-75/120 Impedance Conversion Panel Specifications, page 3

• Install the E1-75/120 Conversion Panel, page 4

• Install Ground and Cables, page 5

• Related Documentation, page 7

• Obtaining Documentation, page 7

• Obtaining Technical Assistance, page 8

• Obtaining Additional Publications and Information, page 10

This document contains the following procedures:

Install the E1-75/120 Conversion Panel, page 4

Install Cables with Molex 96-Pin LFH Connectors on 120-Ohm Side, page 6

Install Cables with 1.0/2.3 Miniature Coax Connectors on 75-Ohm Side, page 6

Replace Cables with 1.0/2.3 Miniature Coax Connectors on 75-Ohm Side, page 6

Note For information about circuits and card capacities, see the Cisco ONS 15454 SDH Reference Manual.

Installing the Cisco ONS 15454 SDH E1-75/120 Impedance Conversion Panel

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E1-75/120 Impedance Conversion Panel Description

The ONS 15454 SDH E1-75/120 impedance conversion panel provides front mount electrical

connection for 42 ITU-compliant, G.703 E-1 ports. It contains 84 1.0/2.3 miniature coaxial connectors

(42 for transmit, 42 for receive) to the client side and two 96-pin Molex type connectors to the FMEC

120-ohm side. Each of the 96-pin Molex type connectors connects 21 inputs and 21 outputs.

Transformers in the E1-75/120 conversion panel improve decoupling from DC voltages and

overvoltages. The E1-75/120 conversion panel is intended to be used in DDFs (digital distribution

frames), ETSI racks, and ANSI racks. If you want to use the E1-75/120 conversion panel in a rack other

than ETSI, remove the ETSI rackmount brackets shipped with the E1-75/120 and use the optional

19-inch/23-inch mounting bracket.

With the E1-75/120 conversion panel, each E1-42 port operates at 2.048 Mbps over a 75-ohm unbalanced

coaxial 1.0/2.3 miniature coaxial connector. Figure 1 shows the E1-75/120 faceplate.

Figure 1 E1-75/120 Conversion Panel Faceplate

Figure 2 shows the E1-75/120 with optional rackmount brackets installed.

Figure 2 E1-75/120 with Optional Rackmount Brackets

83635

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 22 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

83636

19 to 23 in.

rackmount

bracket

ETSI

rackmount

bracket

Installing the Cisco ONS 15454 SDH E1-75/120 Impedance Conversion Panel

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E1-75/120 Impedance Conversion Panel Description

You can install the E1-75/120 conversion panel in the ANSI or ETSI rack containing the

ONS 15454 SDH shelf or in a nearby rack. If you install the E1-75/120 conversion panel where a longer

cable is required, make sure that the total cable loss of the balanced 120-ohm cable and the unbalanced

75-ohm cable does not exceed the maximum allowed value. The E1-75/120 conversion panel enables the

use of 75-ohm interfaces on the client side with the E1-42 card that has 120-ohm interfaces.

Before you can install the E1-75/120 in the rack, install the type of rackmount brackets that is required

for the rack that you are using. Figure 2 shows an ETSI rackmount bracket and a 19-inch/23-inch

rackmount bracket. To install the E1-75 in a 23-inch rack, use the 19-inch/23-inch rackmount brackets

perpendicularly.

Figure 3 shows a block diagram of the E1-75/120 conversion panel.

Figure 3 E1-75/120 Conversion Panel Block Diagram

E1-75/120 Impedance Conversion Panel Specifications

The E1-75/120 conversion panel has the following specifications:

• E1-75/120 input

–

Bit rate: 2.048 Mbps +/− 50 ppm

–

Line code: HDB-3

• E1-75/120 output

–

Bit rate: 2.048 Mbps +/− 50 ppm

–

Line code: HDB-3

• E1-75/120 electrical interface

42 Channels

120-Ohm

Symmetrical Signals

75-Ohm

Unsymmetrical Signals

Transformer 1.26:1

83637

42 Channels

Transformer 1.26:1

Installing the Cisco ONS 15454 SDH E1-75/120 Impedance Conversion Panel

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Install the E1-75/120 Conversion Panel

–

Connectors:

1.0/2.3 miniature coax connectors on 75-ohm side

Molex 96-pin LFH connectors on 120-ohm side (21 inputs and 21 outputs per connector)

–

Impedance tolerance: +/− 5%

Note See the cable loss specification of the E1-42 card for valid cable lengths. The E1-75/120 as a passive

device cannot amplify any singal and so cannot increase the possible cable length.

• Environmental

–

Operating temperature: –5 to +45 degrees Celsius (+23 to +113 degrees Fahrenheit)

–

Operating humidity: 5 to 95%, noncondensing

–

Power consumption: Not applicable; the E1-75/120 is a passive device.

• Dimensions

–

Height: 75 mm (2.95 in.)

–

Width: 535 mm (21.06 in.)

–

Depth: 221 mm (8.7 in.)

–

Weight: 2.15 kg (4.74 lb)

• Compliance

ONS 15454 SDH cards, when installed in a system, comply with these standards:

–

Safety: IEC 60950, EN 60950, UL 60950, CSA C22.2 No. 60950, TS 001, AS/NZS 3260

Install the E1-75/120 Conversion Panel

This section explains how to install the E1-75/120 conversion panel. You need an E1-75/120 conversion

panel if you want to convert the balanced 120-ohm interfaces of the E1-42 card and the corresponding

FMECs to unbalanced 75-ohm interfaces.

Note For more information about the E1-75/120 conversion panel, refer to the Cisco ONS 15454 Reference

Manual.

Step 1 Lift the E1-75/120 conversion panel to the desired rack position.

Figure 4 shows the rack-mounting for the E1-75/120 conversion panel.

Installing the Cisco ONS 15454 SDH E1-75/120 Impedance Conversion Panel

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Install Ground and Cables

Figure 4 Mounting the E1-75/120 Conversion Panel in a Rack

Step 2

Align the screw holes on the mounting ears with the mounting holes in the rack.

Step 3 Using screws suitable to the rack that you are using, install one mounting screw in each side of the

assembly.

Step 4 When the E1-75/120 conversion panel is secured to the rack, install the remaining mounting screws if

necessary.

Install Ground and Cables

This section explains how to install the ground connection and the cables to the E1-75/120 conversion

panel.

Install the Ground Connection

This section explains how to install the ground connection to the E1-75/120 conversion panel.

The ground connection is in the center of the faceplate of the E1-75/120 conversion panel.

Step 1 Remove the nuts and washers from the two grounding bolts in the center of the faceplate.

Step 2 Remove the two-hole grounding lug from the two grounding bolts.

Step 3 With a crimping tool, crimp the ground cable (13.3 mm² [#6 AWG] multi-strand copper wire) to the

grounding lug.

Step 4 Attach the grounding lug to the two grounding bolts. Place the side with the ground cable to the side

where you want to route the grounding cable.

83912

Equipment rack

Installing the Cisco ONS 15454 SDH E1-75/120 Impedance Conversion Panel

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Install Ground and Cables

Step 5 Use the nuts and washers to fix the grounding lug to the grounding bolts.

Step 6 Route the grounding cable and fix it to the to the loop farthest from the front of the cable guiding rail

using tiewraps.

Install Cables with Molex 96-Pin LFH Connectors on 120-Ohm Side

This section explains how to install the Molex 96-pin LFH connector cables on the 120-ohm side to the

E1-75/120 conversion panel.

Step 1 Guide the left Molex 96-pin LFH connector cable (channels 1 to 21) to the left and use tiewraps to attach

it to the loop farthest from the front-left side of the cable guiding rail ( see Figure 1 and Figure 2 on

page -2).

Step 2 Guide the right Molex 96-pin LFH connector cable (channels 22 to 42) to the right and use tiewraps to

attach it to the loop farthest from the front-right side of the cable guiding rail.

Install Cables with 1.0/2.3 Miniature Coax Connectors on 75-Ohm Side

This section explains how to install the 1.0/2.3 miniature coax connector cables on the 75-ohm side to

the E1-75/120 conversion panel.

Step 1 Group the 42 pairs of 75-ohm cables into six groups of 7 cable pairs, so that three groups of cables

(channels 1 to 7, channels 8 to 14, and channels 15 to 21) can be guided to the left and three groups of

cables (channels 42 to 36, channels 35 to 29, and channels 28 to 22) can be guided to the right.

Step 2 Tiewrap the two groups of cables coming from the left and right sides of the E1-75/120 conversion panel

(channels 1 to 7 and 42 to 36) to the second tiewrap fixing loop left and right, etc. with the following

groups (8-14, 35-29).

Step 3 Tiewrap the last two groups of cables coming from the left and right of the center of the E1-75/120

conversion panel (channels 15 to 21 and 28 to 22) to the left and right tiewrap fixing loops closest to the

front.

Step 4 Insert the 1.0/2.3 miniature coax connector of each cable into the connector of the E1-75/120 conversion

panel and push the connector until it clicks into position. If required, use the Y-shape end of the coaxial

connector insertion and removal tool.

Replace Cables with 1.0/2.3 Miniature Coax Connectors on 75-Ohm Side

This section explains how to replace single 1.0/2.3 miniature coax connector cables on the 75-ohm side

of the E1-75/120 conversion panel.

Step 1 If you want to replace individual 1.0/2.3 miniature coax connector cables in the existing installation, first

cut the tiewrap holding the cable that you want to replace.

Installing the Cisco ONS 15454 SDH E1-75/120 Impedance Conversion Panel

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Related Documentation

• Cisco ONS 15454 SDH Procedure Guide

• Cisco ONS 15454 SDH Reference Manual

Obtaining Documentation

Cisco provides several ways to obtain documentation, technical assistance, and other technical

resources. These sections explain how to obtain technical information from Cisco Systems.

Cisco.com

You can access the most current Cisco documentation on the World Wide Web at this URL:

http://www.cisco.com/univercd/home/home.htm

You can access the Cisco website at this URL:

http://www.cisco.com

International Cisco web sites can be accessed from this URL:

http://www.cisco.com/public/countries_languages.shtml

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package, which may have shipped with your product. The Documentation CD-ROM is updated monthly

and may be more current than printed documentation. The CD-ROM package is available as a single unit

or through an annual subscription.

Registered Cisco.com users can order the Documentation CD-ROM (product number

DOC-CONDOCCD=) through the online Subscription Store:

http://www.cisco.com/go/subscription

Installing the Cisco ONS 15454 SDH E1-75/120 Impedance Conversion Panel

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Obtaining Technical Assistance

Ordering Documentation

You can find instructions for ordering documentation at this URL:

http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm

You can order Cisco documentation in these ways:

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http://www.cisco.com/en/US/partner/ordering/index.shtml

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Attn: Customer Document Ordering

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We appreciate your comments.

Obtaining Technical Assistance

Cisco provides Cisco.com, which includes the Cisco Technical Assistance Center (TAC) Website, as a

starting point for all technical assistance. Customers and partners can obtain online documentation,

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Cisco.com provides a broad range of features and services to help you with these tasks:

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• Resolve technical issues with online support

Installing the Cisco ONS 15454 SDH E1-75/120 Impedance Conversion Panel

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Obtaining Technical Assistance

• Download and test software packages

• Order Cisco learning materials and merchandise

• Register for online skill assessment, training, and certification programs

To obtain customized information and service, you can self-register on Cisco.com at this URL:

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If you have Internet access, we recommend that you open P3 and P4 cases through the Cisco TAC

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Installing the Cisco ONS 15454 SDH E1-75/120 Impedance Conversion Panel

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Obtaining Additional Publications and Information

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This document is to be used in conjunction with the documents listed in the “Related Documentation” section.

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Obtaining Additional Publications and Information

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78-15140-01

Obtaining Additional Publications and Information

Cisco 15454E-E1-75BB= Datasheet

Brand: Cisco

Model: 15454E-E1-75BB=

Category: Rack accessories

Type: Datasheet

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