Equipment Issue 1030-101598 Rev. D, August 2010

SectionDBM-A20-001-201

�

�2010 Westell, Inc. All rights reserved. *CLEI is a trademark of Telcordia Technologies. Westell� is a trademark of Westell, Inc.

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Westell� DBMA200-01 Single-Position DS3 MountingCLEI* Code: NCM2WX0DRA

CONTENTS PAGE #

1. GENERAL 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. APPLICATIONS 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. INSTALLATION 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4. TESTING & TROUBLESHOOTING 5. . . . . . . . . . . . . .

5. CUSTOMER & TECHNICAL SERVICES 5. . . . . . . . .

6. WARRANTY & REPAIRS 5. . . . . . . . . . . . . . . . . . . . . . .

7. SPECIFICATIONS 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. GENERAL

1.1 Document Purpose

This document describes the Westell� DBMA200-01 Single-Position DS3 Mounting, shown in Figure 1. See Table 1 forinformation concerning other models in the same product fami-ly.

- NOTE -

Hereafter, the DBMA200-01 Single Position Mounting will bereferred to as the �200-01 Mounting".

1.2 Document Status

Revision B changed the module type from a 200 MECHAN-ICS��to a Slim Mechanics module. Revision C updated theCPR and bar code. Revision D clarifies the product’s ability tosupport a +24Vdc power source.

1.3 Product Purpose and Description

The 200-01 Mounting is a wall mountable, single-position mount-ing for Slim Mechanics DS3 modules, such as Westell Models522-XX. The mounting provides an automatic cut-thru feature thatmaintains transmission continuity when a module is removed fromits slot. The unit is mounted for front access, utilizing minimal wallspace. Input and output connections to/from the unit are made viaBNC connectors. Power, ground and network connections are lo-cated inside the assembly behind the removable cover.

Power for the assembly and the unit installed is derived from a22 to 56Vdc power source (-48V is typical, but +24Vdc also maybe used to power the mounting). See Paragraph 3.4 for connec-tions. Connections are also provided for a back-up powersource. An Alarm output is provided for external reporting of apower alarm condition.

Figure 1. Front View of DBMA200-01L4 Mounting

1.4 Product Mounting

The mounting, along with the appropriate plug-in, provides aninterface between a DS3 facility and customer or network equip-ment. When installed on a customer premises, the 200-01Mounting is typically located after a DS3 Multiplexer system, onthe network side of the demarcation point between the networkand Customer Premises Equipment (CPE). The automatic cut-thru feature allows addition or removal and replacement ofmodules while maintaining service continuity.

- NOTE -

Please refer to the appropriate DS3 NIU Technical Practice foradditional application and operational details.

1.5 Product Features

The 200-01 Mounting offers the following features.

� Single-position chassis for one Slim Mechanics (frontpanel is half the width of a standard 400-type mechanicsunit) DS3 NIU or DSX-3 plug-in card

� Automatic cut-thru on card removal

� Covered network connections

� Power alarm contacts

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� Front access to plug-in modules

� See-through cover with optional lock

� Electrostatic Discharge (ESD) Jack

� Powered from a 22 to 56Vdc external power source

� Meets FCC Part 15, Class A requirements

� ANSI/UL 60950-1 1st Edition

� CAN/CSA C22.2 NO. 60950-1-03

� NEBS Level 3

2. APPLICATIONS

The 200-01 Mounting holds a single BroadTerm� plug-in mod-ule for transport of wideband DS3 services. The mounting, alongwith the appropriate plug-in, provides an interface between aDS3 facility and customer or network equipment.

3. INSTALLATION

Installation consists of inspecting the equipment for damage,following proper safety precautions, mounting the 200-01Mounting on a wall or on an equipment backboard, verifying thepresence of power and signaling as indicated by the status LEDson the plug-in module used.

The following paragraphs provide detailed instructions for per-forming these procedures.

- INSPECTION NOTE -

If not previously inspected at the time of delivery, visually inspectthe unit for damages prior to installation. If the equipment hasbeen damaged in transit, immediately report the extent of thedamage to the transportation company and to Westell (see Part6 for telephone number).

CAUTION - STATIC-SENSITIVE

This product contains static-sensitive components! Properelectrostatic discharge procedures must be followed tomaintain personal and equipment safety. Do not store unitsnear magnetic, electromagnetic or electrostatic fields. Alwaysstore or ship units in the original static-protective packagingfrom Westell. Use anti-static mats when working on units.

- PRECAUTIONARY STATEMENT -

Never install telephone wiring during a lightning storm.

Never install telephone jacks in wet locations unless the jackis specifically designed for wet locations.

Never touch uninsulated telephone wires or terminals unlessthe telephone line has been disconnected at the networkinterface.

Use caution when installing or modifying telephone lines.

3.1 Pre-Mounting Considerations

3.1.1 Important Safety Instructions (Please Save)

When using your telephone/telecommunications equipment,basic safety instructions should always be followed to reduce riskof fire, electric shock and injury to person, including the follow-ing:

A. Read and understand all instructions.

B. Follow all warnings and instructions marked on product.

C. Do not place this product on an unstable cart, stand or table: the

product may fall, causing serious damage to product.

D. Slots and openings in the cabinet and the back or bottom are pro-

vided for ventilation. To protect it from overheating, these

openings must not be blocked or covered. This product should nev-

er be placed near or over a radiator or heat register. This product

should not be placed in a built-in installation unless proper ventila-

tion is provided.

E. This product should be operated only from the type of power

source indicated on the marking label.

F. Never push object of any kind into this product through cabinet

slots as they may touch dangerous voltage points or short out parts

that could result in the risk of fire or electrical shock. Never spill liq-

uid of any kind on the product.

3.1.2 Gathering Tools and Supplies

The following tools and supplies are required to mount the200-01 Mounting.

� Screw Drivers (Phillips or Slot)

� Drill and assorted cement or wood-type drill bits or Awl

� Depending on the mounting surface, four wood screws,cement-type screws or appropriate wall-mounting an-chors and screws

3.1.3 Powering Considerations

Terminal blocks are provided for making power and alarm con-nections. A ground lug is provided for chassis or frame groundconnection, shown in Figure 3. There are four BNC connectorsfor making DS3 connections to the unit.

Section DBM-A20-001-201030-101598 Rev. D�

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Mounting Holes

Mounting Holes

Figure 2. 200-01 Mounting Hole Locations

3.2 Mounting the Assembly

3.2.1 Wall Mounting

The 200-01 Mounting can be directly mounted to a wall. Thetype of wall may be concrete, plasterboard, or wood. Please fol-low the instructions below to mount the assembly on a wall.

1. Open shipping carton. Remove the mounting assemblyfrom the shipping carton.

2. Loosen cover. Loosen the top cover screw or, if lockable, in-sert key and rotate key to the left (counterclockwise) andremove the cover by sliding it outward from the assembly.

3. Determine the mounted location on wall. Ensure the as-sembly will be mounted in a location with unobstructedaccess to it and which has adequate room to allow the coverto be removed, and that adequate horizontal and verticalspace be left between multiple installations to allow forproper cable access and ventilation.

4. Mark the mounting hole locations to be drilled. Using theassembly itself as a template, have one person lift the as-sembly to the exact installation location on and against thewall while another person levels the assembly and thenmarks the exact mounting ear hole locations to be drilledfor the mounting hardware. See Figure 2.

5. Drill holes. Gently set aside the assembly and drill appro-priately-sized holes to accommodate the mounting screwsor fastening hardware. The size of the holes and the fasten-

ing hardware varies according to the wall type, as listedbelow. Do not make the holes too large.

� Plywood or wood studs (preferred): Choose a drill bitwith a slightly smaller diameter than the wood mount-ing screws and drill all holes to a depth just shy of thescrew length.

� Drywall: Use the chosen toggle bolt periodically as aguide to check the hole diameter. The correct hole sizeis obtained when the toggle bolt, in the closed position(with wings folded), fits very snugly into the hole. Re-peat for each hole.

� Concrete: Using a concrete drill bit with a diameterthat will enable the concrete wall fastener to fit verysnugly into the finished hole, drill each hole to thedepth of the fastener.

6. Partially install the mounting screws. Verify that themounting screw head (or toggle bolt head) can fit throughthe center, largest part of the mounting hole in the mount-ing ear. If the head fits through the hole in the ear, find thewall type below and follow those instructions.

� Wood - Insert and install all mounting screws until only¼" of the screws are protruding from the wall surface.

� Drywall - Verify that the shaft of the toggle bolt is longenough to accommodate the length of the wings in thefolded position plus a length equal to the width of thedrywall plus a length needed to hold onto the bolt. Thisis so that when the toggle bolt is inserted into the hole,that the wings are free to open on the other side of thedrywall and the installer may still hold the bolt (if thetoggle bolt does not have a washer). Once verified, foldthe wings, insert the toggle bolt into the hole, continueto hold the bolt head, and insert into the hole until thewings spring open. As soon as the wings spring open,pull on the bolt while tightening it with a screwdriver,until ¼" of the bolt remains protruding from the wall.

� Concrete - Remove the screw from the fastener and in-sert the fastener into the hole, tapping in place with ahammer, as necessary. Once the fastener is flushagainst the wall and secure, insert the screw into thefastener until only ¼" of the screw is protruding fromthe wall surface.

7. Attach assembly to wall. If Step 6 was completed, lift and align the assembly’s mount-ing holes with the protruding screws on the wall, thencarefully hang the assembly on the screws. The screw headsshould fit through the center of the mounting holes on theears, and when all screw heads have protruded through themounting ear holes, the assembly can be gently and slightlylowered until the top edge of each mounting ear hole stopsat and rests on the protruding screws. While holding the as-sembly in place, immediately finish driving all screws theremaining distance into the wall to firmly secure the assem-bly until it is snug against the wall. Do not turn the screws tootight.

If Step 6 was not completed because the screw heads would notfit through center of mounting ear holes, have one person liftthe assembly, align the holes in the mounting ears with the

Section DBM-A20-001-201 030-101598 Rev. D�

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Ground Lug

Figure 3. Ground Lug Location

drilled holes in the wall, and hold the assembly firmly inplace while the other person inserts the mounting screws inthe drilled holes or the installed wall fasteners (top holesfirst), depending on the wall type, while following Step 5 asmuch as possible. Tighten all screws. Do not turn the screwstoo tight.

- GROUNDING NOTE -

Always follow the National Electrical Code (NEC) rules, local safety pre-cautions, and standard operating procedures for grounding the equipmentwhen installing, upgrading, repairing or maintaining equipment. Any in-structions or information contained herein is subordinate to local codes,operating procedures or practices.

3.3 Chassis/Frame Ground Connections

There is a ground lug located near the bottom of the assembly.It is provided for chassis or frame ground connection, and isshown in Figure 3. This lug will accomodate up to a #6 AWGground wire, and #6 wire is recommended for this connection.

The 200-01 mounting also has a jack on the chassis that can beused for connecting a static discharge wrist strap. It is shown inFigure 4.

3.4 Power Connections

There are two sets of screw terminals for making power connec-tions. One is for main power, the other is for a back-up powersource. This type of connection allows for fail-safe operation inthe event a loss of power occurs.

Power connections are made as follows:

1. Using the terminal for supply A, loosen the two screws andconnect the negative lead of the main DC supply to the mi-nus (-48V A) screw terminal and the positive lead to theplus (+48V A) screw terminal, as shown in Figure 5. An#16 to #22 AWG wire is recommended for making power

ESD Jack

Figure 4. ESD Jack Location

connections. For +24Vdc operation, connect the positivelead to the �+" screw and the negative lead to the �−"screw.

2. For connecting a back-up power source, repeat Step 1 usingthe terminal for supply B.

3. Connect the Frame or Chassis Ground wire to the FrameGround Lug. A #6 wire is recommended for this connec-tion.

- NOTE -

Do not attempt to operate the unit in the assembly without an ap-proved safety ground connected to the Frame Ground lug.

- NOTE -

The -48Vdc input return terminal is an isolated DC return(DC-I). The -48Vdc input return terminal is not internally con-nected to the chassis framework.

3.4.1 Fusing Recommendations

To protect the modules mounted in the shelf, a fuse should beinstalled in the power circuit of the shelf. A 1/4 Amp fuse is rec-ommended for the main and the back-up power sources.

Main PowerConnection

Backup PowerConnection

Figure 5. 200-01 Mounting Power Connections

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Figure 6. 200-01 Mounting Alarm Connections

3.4.2 Alarm Connections

An Alarm terminal is provided for an alarm indication from theunit installed in the mounting. The alarm terminal provides botha normally open (NO) and a normally closed (NC) connection,sown in Figure 6. Alarm contacts close/open in the event thefuse on an NIU opens. An #18 to #24 AWG size wire is recom-mended for alarm connections.

3.5 Facility/Network Interface Connections

DS3 connections are made to the unit via coaxial cable connec-tors as described below.

� FROM NETWORK: Connection from network to card.

� TO NETWORK: Connection from card to network.

� FROM CPE: Connection from CPE to card.

� TO CPE: Connection from card to CPE.

3.6 Module Installation

The 200-01Mounting provides a thumb screw on the top of themetal chassis to secure the module in the mounting when con-nectors are removed from the front panel of the unit. To inserta module into the mounting, loosen the thumb screw and seatthe module into the connetor. Tighten the thumb screw and re-install the mounting cover.

Before installing the module, set any option switch(es) to the de-sired position(s). Align the module with the mounting orassembly card guides above and below the unit and insert as faras it will go into the slot connector.

- NOTE -

Refer to the appropriate documentation for the unit beinginstalled in the assembly for details.

- CAUTION -

Use care when installing and removing modules - do not forcea module into place. If a module resists insertion, remove itand check for obstructions in or near the module’s or shelf’sconnectors and mounting slots. The module may then becarefully aligned and gently re-inserted.

4. TESTING & TROUBLESHOOTING

4.1 Testing

This equipment should not be field repaired. If the equipmentis suspected of being faulty, replace it with another unit, op-tioned identically, and retest. If the replacement unit appears tooperate correctly, the original unit may be faulty and should bereturned to Westell for repair or replacement (Paragraph 6.2).

4.2 Troubleshooting

If trouble is encountered, verify all installer connections to theassembly and check that the CO power fuse is not blown. Alsoverify all module connections and option switch settings, andverify the modules are making a positive connection with theshelf connector. If trouble persists, replace the suspect unit andrepeat procedures outlined. These procedures are not designedto effect repairs or modifications. Any tests beyond those out-lined herein, or repairs made beyond replacing a faulty unit, arenot recommended and may void the warranty.

5. CUSTOMER & TECHNICAL SERVICES

5.1 Customer Service & Technical Assistance

If technical or customer assistance is required, contact Westellby calling or using one of the following options:

Voice: (800) 377-8766email: global_support@westell.com

Visit the Westell World Wide Web site at http://www.Westell.comfor additional information about Westell.

5.2 Part Numbers

This equipment is identified by a product number(DBMA200-1) which consists of three parts: the assembly type(DBMA - Digital Broadband Mounting Assembly) and modelnumber (200-01). If an option is provided(third part), it is indi-cated with a suffix (DBMA200-01L4).

6. WARRANTY & REPAIRS

6.1 Warranty

Westell warrants this product to be free of defects at the time ofshipment. Westell also warrants this product to be fully function-al for the time period specified by the terms and conditionsgoverning the sale of the product. Any attempt to repair or

mailto:global_support@westell.comhttp://www.Westell.com

Section DBM-A20-001-201 030-101598 Rev. D�

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modify the equipment by anyone other than an authorized West-ell representative will void the warranty.

6.2 Repair and Return

Westell will repair or replace any defective Westell equipmentwithout cost during the warranty period if the unit is defectivefor any reason other than abuse, improper use, or improperinstallation. To return defective equipment, first request a Re-turn Material Authorization (RMA) number from Westell bycalling or using one of the options shown below. Once an RMAnumber is obtained, return the defective unit (freight prepaid),along with a brief problem description, to the address we willprovide to you when you contact us.

Voice: (630) 375-4457email: rgmdept@westell.com

Replacements will be shipped in the fastest manner consistentwith the urgency of the situation. Westell will continue to repairor replace faulty equipment beyond the warranty period for anominal charge. Contact Westell for details.

7. SPECIFICATIONS

7.1 Regulatory/Agency Specifications

The 200-01 Mounting is designed to meet the following regula-tory, safety, or environmental specifications or requirements:

� Meets FCC Part 15, Class A requirements

� ANSI/UL 60950-1

� CAN/CSA C22.2 NO. 60950-1-3

� NEBS Level 3

7.2 Ordering Specifications

To order units, call the telephone number shown in Paragraph5.1 and please specify a specific model number shown in Table 1.

Model # Description

DBMA200-01DBMA200-01 Single-Position DS3 Mounting.CLEI* Code: NCM2WX0DRA. Barcode/ECI: 445093. CPR:

206730.

DBMA200-01L4

DBMA200-01 Single-Position DS3 Mountingw/Locking front cover.CLEI Code: NCM22X0DRA. Barcode/ECI: 445595. CPR:

206730.

DTMWB4

DTM-WB4 Wall Bracket holds up to fourDBMA200-01 mountings.CLEI Code: VAMYABTRAA. Barcode/ECI: 441768. CPR:

099999.

DTMWB7

DTM-WB7 Wall Bracket holds up to sevenDBMA200-01 mountings.CLEI Code: VAMYABURAA. Barcode/ECI: 441769. CPR:

099999.

*CLEI is a trademark of Telcordia Technologies.

Table 1. Ordering and Option Information

7.3 Electrical and Physical Specifications

The electrical and signaling specifications are listed below, andthe physical specifications are shown in Table 2.

A. Power: 22 to 56Vdc (-48V is typical, but +24Vdc mayalso be used to power the mounting)

Physical Feature U.S. Metric

Height 11.0 in. 27.94 cm

Width 2.2 in. 5.59 cm

Depth 7.3 in. 18.54 cm

Weight (approx.) 2.5 lbs. 1.13 kg

Operating Temp. -40° to 149°F -40° to 65°C

Humidity 0 to 95% (non-condensing)

Table 2. Physical Specifications

mailto:rgmdept@westell.com

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