Westell DBMA200-01 User manual

Equipment Issue 1
030-101598 Rev. D, August 2010
SectionDBM-A20-001-201
R
E2010 Westell, Inc. All rights reserved.
*CLEI is a trademark of Telcordia Technologies. Westellris a trademark of Westell, Inc.
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WestellrDBMA200-01 Single-Position DS3 Mounting
CLEI* 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 WestellrDBMA200-01 Single-
Position DS3 Mounting, shown in Figure 1. See Table 1 for
information concerning other models in the same product fami-
ly.
- NOTE -
Hereafter, the DBMA200-01 Single Position Mounting will be
referred to as the 200-01 Mounting".
1.2 Document Status
Revision B changed the module type from a 200 MECHAN-
ICSrto a Slim Mechanics module. Revision C updated the
CPR and bar code. Revision D clarifies the product’s ability to
support 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 Models
522-XX. The mounting provides an automatic cut-thru feature that
maintains transmission continuity when a module is removed from
its slot. The unit is mounted for front access, utilizing minimal wall
space. Input and output connections to/from the unit are made via
BNC 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 a
22 to 56Vdc power source (-48V is typical, but +24Vdc also may
be used to power the mounting). See Paragraph 3.4 for connec-
tions. Connections are also provided for a back-up power
source. An Alarm output is provided for external reporting of a
power alarm condition.
Figure 1. Front View of DBMA200-01L4 Mounting
1.4 Product Mounting
The mounting, along with the appropriate plug-in, provides an
interface between a DS3 facility and customer or network equip-
ment. When installed on a customer premises, the 200-01
Mounting is typically located after a DS3 Multiplexer system, on
the network side of the demarcation point between the network
and Customer Premises Equipment (CPE). The automatic cut-
thru feature allows addition or removal and replacement of
modules while maintaining service continuity.
- NOTE -
Please refer to the appropriate DS3 NIU Technical Practice for
additional application and operational details.
1.5 Product Features
The 200-01 Mounting offers the following features.
SSingle-position chassis for one Slim Mechanics (front
panel is half the width of a standard 400-type mechanics
unit) DS3 NIU or DSX-3 plug-in card
SAutomatic cut-thru on card removal
SCovered network connections
SPower alarm contacts

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SFront access to plug-in modules
SSee-through cover with optional lock
SElectrostatic Discharge (ESD) Jack
SPowered from a 22 to 56Vdc external power source
SMeets FCC Part 15, Class A requirements
SANSI/UL 60950-1 1st Edition
SCAN/CSA C22.2 NO. 60950-1-03
SNEBS Level 3
2. APPLICATIONS
The 200-01 Mounting holds a single BroadTermtplug-in mod-
ule for transport of wideband DS3 services. The mounting, along
with the appropriate plug-in, provides an interface between a
DS3 facility and customer or network equipment.
3. INSTALLATION
Installation consists of inspecting the equipment for damage,
following proper safety precautions, mounting the 200-01
Mounting on a wall or on an equipment backboard, verifying the
presence of power and signaling as indicated by the status LEDs
on 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 inspect
the unit for damages prior to installation. If the equipment has
been damaged in transit, immediately report the extent of the
damage to the transportation company and to Westell (see Part
6 for telephone number).
CAUTION - STATIC-SENSITIVE
This product contains static-sensitive components! Proper
electrostatic discharge procedures must be followed to
maintain personal and equipment safety. Do not store units
near magnetic, electromagnetic or electrostatic fields. Always
store or ship units in the original static-protective packaging
from 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 jack
is specifically designed for wet locations.
Never touch uninsulated telephone wires or terminals unless
the telephone line has been disconnected at the network
interface.
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 risk
of 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 the
200-01 Mounting.
SScrew Drivers (Phillips or Slot)
SDrill and assorted cement or wood-type drill bits or Awl
SDepending 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 ground
connection, shown in Figure 3. There are four BNC connectors
for making DS3 connections to the unit.

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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. The
type 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 assembly
from the shipping carton.
2. Loosen cover. Loosen the top cover screw or, if lockable, in-
sert key and rotate key to the left (counterclockwise) and
remove 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 unobstructed
access to it and which has adequate room to allow the cover
to be removed, and that adequate horizontal and vertical
space be left between multiple installations to allow for
proper cable access and ventilation.
4. Mark the mounting hole locations to be drilled. Using the
assembly itself as a template, have one person lift the as-
sembly to the exact installation location on and against the
wall while another person levels the assembly and then
marks the exact mounting ear hole locations to be drilled
for the mounting hardware. See Figure 2.
5. Drill holes. Gently set aside the assembly and drill appro-
priately-sized holes to accommodate the mounting screws
or fastening hardware. The size of the holes and the fasten-
ing hardware varies according to the wall type, as listed
below. Do not make the holes too large.
SPlywood or wood studs (preferred): Choose a drill bit
with a slightly smaller diameter than the wood mount-
ing screws and drill all holes to a depth just shy of the
screw length.
SDrywall: Use the chosen toggle bolt periodically as a
guide to check the hole diameter. The correct hole size
is obtained when the toggle bolt, in the closed position
(with wings folded), fits very snugly into the hole. Re-
peat for each hole.
SConcrete: Using a concrete drill bit with a diameter
that will enable the concrete wall fastener to fit very
snugly into the finished hole, drill each hole to the
depth of the fastener.
6. Partially install the mounting screws. Verify that the
mounting screw head (or toggle bolt head) can fit through
the center, largest part of the mounting hole in the mount-
ing ear. If the head fits through the hole in the ear, find the
wall type below and follow those instructions.
SWood - Insert and install all mounting screws until only
¼" of the screws are protruding from the wall surface.
SDrywall - Verify that the shaft of the toggle bolt is long
enough to accommodate the length of the wings in the
folded position plus a length equal to the width of the
drywall plus a length needed to hold onto the bolt. This
is so that when the toggle bolt is inserted into the hole,
that the wings are free to open on the other side of the
drywall and the installer may still hold the bolt (if the
toggle bolt does not have a washer). Once verified, fold
the wings, insert the toggle bolt into the hole, continue
to hold the bolt head, and insert into the hole until the
wings 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.
SConcrete - Remove the screw from the fastener and in-
sert the fastener into the hole, tapping in place with a
hammer, as necessary. Once the fastener is flush
against the wall and secure, insert the screw into the
fastener until only ¼" of the screw is protruding from
the 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, then
carefully hang the assembly on the screws. The screw heads
should fit through the center of the mounting holes on the
ears, and when all screw heads have protruded through the
mounting ear holes, the assembly can be gently and slightly
lowered until the top edge of each mounting ear hole stops
at and rests on the protruding screws. While holding the as-
sembly in place, immediately finish driving all screws the
remaining distance into the wall to firmly secure the assem-
bly until it is snug against the wall. Do not turn the screws too
tight.
If Step 6 was not completed because the screw heads would not
fit through center of mounting ear holes, have one person lift
the assembly, align the holes in the mounting ears with the

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Ground Lug
Figure 3. Ground Lug Location
drilled holes in the wall, and hold the assembly firmly in
place while the other person inserts the mounting screws in
the drilled holes or the installed wall fasteners (top holes
first), depending on the wall type, while following Step 5 as
much as possible. Tighten all screws. Do not turn the screws
too tight.
- GROUNDING NOTE -
Always follow the National Electrical Code (NEC) rules, local safety pre-
cautions, and standard operating procedures for grounding the equipment
when 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 is
shown in Figure 3. This lug will accomodate up to a #6 AWG
ground wire, and #6 wire is recommended for this connection.
The 200-01 mounting also has a jack on the chassis that can be
used for connecting a static discharge wrist strap. It is shown in
Figure 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 power
source. This type of connection allows for fail-safe operation in
the event a loss of power occurs.
Power connections are made as follows:
1. Using the terminal for supply A, loosen the two screws and
connect the negative lead of the main DC supply to the mi-
nus (-48V A) screw terminal and the positive lead to the
plus (+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 positive
lead to the +" screw and the negative lead to the −"
screw.
2. For connecting a back-up power source, repeat Step 1 using
the terminal for supply B.
3. Connect the Frame or Chassis Ground wire to the Frame
Ground 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 be
installed 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 Power
Connection
Backup Power
Connection
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 the
unit installed in the mounting. The alarm terminal provides both
a normally open (NO) and a normally closed (NC) connection,
sown in Figure 6. Alarm contacts close/open in the event the
fuse 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.
SFROM NETWORK: Connection from network to card.
STO NETWORK: Connection from card to network.
SFROM CPE: Connection from CPE to card.
STO CPE: Connection from card to CPE.
3.6 Module Installation
The 200-01Mounting provides a thumb screw on the top of the
metal chassis to secure the module in the mounting when con-
nectors are removed from the front panel of the unit. To insert
a module into the mounting, loosen the thumb screw and seat
the 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 or
assembly card guides above and below the unit and insert as far
as it will go into the slot connector.
- NOTE -
Refer to the appropriate documentation for the unit being
installed in the assembly for details.
- CAUTION -
Use care when installing and removing modules - do not force
a module into place. If a module resists insertion, remove it
and check for obstructions in or near the module’s or shelf’s
connectors and mounting slots. The module may then be
carefully aligned and gently re-inserted.
4. TESTING & TROUBLESHOOTING
4.1 Testing
This equipment should not be field repaired. If the equipment
is suspected of being faulty, replace it with another unit, op-
tioned identically, and retest. If the replacement unit appears to
operate correctly, the original unit may be faulty and should be
returned to Westell for repair or replacement (Paragraph 6.2).
4.2 Troubleshooting
If trouble is encountered, verify all installer connections to the
assembly and check that the CO power fuse is not blown. Also
verify all module connections and option switch settings, and
verify the modules are making a positive connection with the
shelf connector. If trouble persists, replace the suspect unit and
repeat procedures outlined. These procedures are not designed
to effect repairs or modifications. Any tests beyond those out-
lined herein, or repairs made beyond replacing a faulty unit, are
not recommended and may void the warranty.
5. CUSTOMER & TECHNICAL SERVICES
5.1 Customer Service & Technical Assistance
If technical or customer assistance is required, contact Westell
by calling or using one of the following options:
Voice: [phone]
email: [email protected]
Visit the Westell World Wide Web site at http://www.Westell.com
for 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 model
number (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 of
shipment. Westell also warrants this product to be fully function-
al for the time period specified by the terms and conditions
governing the sale of the product. Any attempt to repair or

Section DBM-A20-001-201 030-101598 Rev. D R
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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 equipment
without cost during the warranty period if the unit is defective
for any reason other than abuse, improper use, or improper
installation. To return defective equipment, first request a Re-
turn Material Authorization (RMA) number from Westell by
calling or using one of the options shown below. Once an RMA
number is obtained, return the defective unit (freight prepaid),
along with a brief problem description, to the address we will
provide to you when you contact us.
Voice: [phone]
email: [email protected]
Replacements will be shipped in the fastest manner consistent
with the urgency of the situation. Westell will continue to repair
or replace faulty equipment beyond the warranty period for a
nominal 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:
SMeets FCC Part 15, Class A requirements
SANSI/UL 60950-1
SCAN/CSA C22.2 NO. 60950-1-3
SNEBS Level 3
7.2 Ordering Specifications
To order units, call the telephone number shown in Paragraph
5.1 and please specify a specific model number shown in Table 1.
Model # Description
DBMA200-01
DBMA200-01 Single-Position DS3 Mounting.
CLEI* Code: NCM2WX0DRA. Barcode/ECI: 445093. CPR:
206730.
DBMA200-01L4
DBMA200-01 Single-Position DS3 Mounting
w/Locking front cover.
CLEI Code: NCM22X0DRA. Barcode/ECI: 445595. CPR:
206730.
DTMWB4
DTM-WB4 Wall Bracket holds up to four
DBMA200-01 mountings.
CLEI Code: VAMYABTRAA. Barcode/ECI: 441768. CPR:
099999.
DTMWB7
DTM-WB7 Wall Bracket holds up to seven
DBMA200-01 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, and
the physical specifications are shown in Table 2.
A. Power: 22 to 56Vdc (-48V is typical, but +24Vdc may
also 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