Westell DBMA Position DS3 Mounting Assembly

Transcription

1 ection DBM-A Equipment Issue Rev. B, August 2010 Westell DBMA Position D3 Mounting Assembly CLEI* Code: NCM2YY0DRA CONTENT PAGE # 1. GENERAL APPLICATION INTALLATION TETING & TROUBLEHOOTING CUTOMER & TECHNICAL ERVICE WARRANTY & REPAIR PECIFICATION GENERAL 1.1 Document Purpose Figure 1. Isometric Front View of DBMA helf This document describes the Westell DBMA200-24, shown in Figure 1. ee Table 5 for information concerning other models in the same product family. Hereafter, the DBMA Position D3 Mounting Assembly may be referred to as the " or mounting." 1.2 Document tatus This practice replaces practice , updates the company contact information, and removes the DBMA200-24L4 model. Revision B clarifies the product s ability to support a +24Vdc power source. Whenever this practice is updated, the reason will be stated in this paragraph. 1.3 Product Purpose and Description The mounting is a rack-mountable, 24-position, mounting assembly for lim Mechanics D3 modules, such as the Westell Model 522-XX series. The mounting provides an automatic cut-thru feature that maintains transmission continuity when a module is removed from its slot, making it highly efficient as a cross-connect shelf. Input and output connections to and from the units are made via BNC-type connectors on the back panel. Power, ground, and chassis connections are also made to the back panel. Power for the assembly and the units installed is derived from a 22 to 56Vdc power source (-48V is typical, but +24Vdc also may be used to power the mounting). The shelf is designed to allow either split or backup power feeds. An alarm output is provided for external reporting of a fuse alarm condition. 1.4 Product Mounting The is typically mounted on 19" or 23" equipment racks. The can be mounted to a wall with the DBMAWB-24 Wall Mounting Bracket. When installed at a customer premises, the mounting is typically located after a D3 Multiplexer system, on the Network side of the demarcation point between the Network and Customer Premises Equipment (CPE). In Central Office (CO) applications, the mounting can interface customer co-located terminating equipment or intraoffice network equipment. The automatic cut-thru feature allows a single DX-3 card to be used in a any slot for testing or cross-connecting. Continuity through the shelf is maintained even when the card is removed. Please refer to the appropriate D3 module practice for additional application and operational information. 1.5 Product Features The mounting offers the following features: Reversible mounting ears for 19" or 23" equipment rack installations Covered Network connections Power alarm connections Locking see-thru cover available (see Table 5) All connections made on the back of the assembly Powered from a 22 to 56Vdc external power source Electrostatic Discharge (ED) Jack Meets FCC Part 15, Class A requirements ANI/UL CAN/CA C22.2 NO NEB Level Westell, Inc. All rights reserved. *CLEI is a trademark of Telcordia Technologies. Westell is a registered trademark of Westell, Inc. Page 1 of 5

2 ection DBM-A Rev. B 2. APPLICATION The mounting holds up to 24 BroadTerm lim Mechanics plug-in modules for transport of wideband D3 services. These modules may be any mix of DX-3 cards (jack access) or network interface units. The mounting, along with the appropriate plug-ins, provides an interface between a D3 facility and customer or network equipment. 3. INTALLATION The mounting can be installed in a 19- or 23-inch rack. The plug-in modules and mounting are designed for hot insertion and removal, meaning the shelf can be powered while inserting or removing circuit cards. When a card is removed, the shelf provides a metallic cut-thru between the CPE and the network connections. The following paragraphs provide detailed instructions for performing these procedures. - INPECTION 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 5 for telephone number). CAUTION - TATIC-ENITIVE 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 TATEMENT - 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 Important afety Instructions (Please ave) 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 following: 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. lots and openings in the cabinet and the back or bottom are provided for ventilation. To protect it from overheating, these openings must not be blocked or covered. This product should never be placed near or over a radiator or heat register. This product should not be placed in a built-in installation unless proper ventilation is provided. E. This product should be operated only from the type of power source indicated on the marking label. F. Never push objects 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 liquid of any kind on the product Gathering Tools and upplies The following tools and supplies are required to mount the mounting. crew Drivers (Phillips Head and Flat Head) crews are provided for equipment rack installations. 3.2 Mounting the Assembly The Mounting comes equipped with adjustable rack mounting brackets which can be installed so the mounting can be installed in either a 19- or 23-inch relay rack, or cabinets with 18-5/16" or 22-5/16" hole spacing. In addition, the versatile mounting is designed to accommodate several mounting orientations or projections, as determined by the depth-placement of the mounting brackets when they are secured to the side of the mounting. 1. Attach mounting brackets. Verify the mounting brackets are in the proper position on the and that they are firmly secured to the using the screws provided. 2. Determine mounting location in rack/cabinet. Ensure the will be mounted in a location with unobstructed access to it, that has adequate room to allow the front door to be opened, that adequate vertical space be left between multiple installations to allow for proper cable access and ventilation, and that the proper shelf projection within the rack is achieved, per local practice. 3. Attach mounting to rack/cabinet channels. Position the assembly into the appropriate or assigned mounting space within the rack or cabinet. Align the holes of the mounting ears with the holes in the channels. ecure the assembly to rack using the screws provided. When installing the shelf in a 19" or a 23" rack, the shelf requires four units of rack height (7 inches or 18 cm). 3.3 Power Connections A seven position terminal block is provided for making power connections to the shelf (Figure 2). These terminals may be connected in several ways to provide the type of power connections required for your application as described in the 2

3 Rev. B ection DBM-A The -48 Vdc input return terminal is an isolated DC return (DC-I). The -48 Vdc input return terminal is not internally connected to the chassis framework. Jumper - GROUNDING NOTE - Always follow the National Electrical Code (NEC) rules, local safety precautions, and standard operating procedures for grounding the equipment when installing, upgrading, repairing or maintaining equipment. Any instructions or information contained herein is subordinate to local codes, operating procedures or practices. Figure 2. helf Power Connections following figures and tables. Choose the one that is appropriate for your application. The use of #18 to #12 AWG size wire is recommended for making power connections. Refer to Table 4 for Westell power supply information and connection. - CAUTION - Do not attempt to operate units in the assembly without an approved safety ground connected to the Frame Ground lug. tandalone AC/DC Power upplies have a Ground Reference, which is different from a Frame (aka Chassis or Earth) ground. To avoid a floating ground reference, tie the Ground Reference (green wire) and the positive lead TOGETHER on the +/GND terminal of the mounting s power strip. This will assure a constant negative voltage is applied to the mounting. DO NOT use this Ground Reference as the Frame or Chassis Ground. tep tep Action Make sure the P/ Bridge jumper is in place. (ee Figure 2.) Connect the frame or chassis ground wire to the frame ground lug. A #6 AWG wire is recommended for this connection. Connect the negative lead of the power supply to the -VA terminal. Connect the positive lead of the power supply to the GNDA terminal. This completes the connections for a single power source. Table 1. ingle Power Connections Action Connect the primary power supply as shown in teps 1 through 4 for the single power connection. Connect the negative lead of the backup power supply to the -VB terminal. Connect the positive lead of the backup power supply to the GNDB terminal. This completes the connections for a backup power source. Table 2. Backup Power Connections tep Action 1. Remove the P/ Bridge jumper from the terminal block. 2. Connect the frame or chassis ground wire to the frame ground lug. 3. Connect the negative lead of the A" power supply (slots 1-12 in the DBMA200-24) to the -VA terminal. 4. Connect the positive lead of the A" power supply to the GNDA terminal. 5. Connect the negative lead of the B" power supply (slots in the DBMA200-24) to the -VB terminal. 6. Connect the positive lead of the B" power supply to the GNDB terminal. 7. This completes the connections for a split power source. Table 3. plit Power Connections using Two eparate Power ources for lots 1-12 and The screw terminal with the frame ground symbol, shown in Figure 2, must be connected to earth ground to ensure FCC compliance. D3 helf # of NIU lots Max. Current Draw (Amps) uggested Fusing from a Panel uggested -48Vdc Power upply* DBMA Vdc = Vdc = 1.32 * +24Vdc source is customer provided. Table Vdc = 5 Amps -48Vdc = 3 Amps Westell D3 NIU helf Powering 2560I1 power supply (2.5A) 1800I1 wall-mounting for 2560I1, A power supply (1.25A) 3

4 ection DBM-A Rev. B 3.4 Alarm Connections An Alarm terminal (Figure 3) is provided for an alarm indication from the units installed in the mounting. The alarm terminal provides both a Normally Open (NO) and a Normally Closed (NC) connection. Alarm contacts close/open in the event the fuse on an NIU opens. An #18 to #12 AWG size wire is recommended for alarm connections. 3.5 tatic Discharge Protection (ED) The mounting has a jack in the lower left corner of the front that can be used for connecting a static discharge wrist strap (Figure 4). 3.6 Chassis/Frame Ground Connections The mounting provides a chassis ground lug to accept up to a #6 AWG copper ground wire. This lug is located on the rear of the mounting at the top center of the unit, as shown in Figure Facility/Network Interface Connections D3 connections are made to the unit via coaxial cable connectors at the rear of the mounting. The mounting comes with a removable, protective plate to keep the network connections from being accidentally removed or changed. RECEIVE FROM NETWORK: Connection from Network to card. RECEIVE FROM CPE: Connection from CPE to card. TRANMIT TO CPE: Connection from card to CPE. TRANMIT TO NETWORK: Connection from card to Network. 3.8 Module Installation The mounting provides a locking bar (see Figure 4) to secure the modules in the shelf. To insert modules into the shelf, loosen the screws on each end of the locking bar and remove it. Insert the modules required and replace the locking bar by inserting the two tabs into their slots and tighten the end screws. Installation is complete. Before installing the module, set any option switch(es) to the desired 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. - CAUTION - Be sure to replace the locking bar so that cards do not accidentally get removed during test procedures. Figure 3. helf Alarm Connections - 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. et any/all manual option switches prior to installing units. Locking Bar 4. TETING & TROUBLEHOOTING 4.1 Testing This equipment should not be field repaired. If the equipment is suspected of being faulty, replace it with another unit, optioned 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). ED Jack Figure 4. Front View Detail 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 4

5 R RCV from Network ection DBM-A Rev. B XMT to Network Chassis GND Alarm Connections RCV from CPE Power Connections XMT to CPE Figure 5. Rear View of the Mounting 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 outlined herein, or repairs made beyond replacing a faulty unit, are not recommended and may void the warranty. 5. CUTOMER & TECHNICAL ERVICE 5.1 Customer ervice & Technical Assistance If technical or customer assistance is required, contact Westell by calling or using one of the following options: modify the equipment by anyone other than an authorized Westell representative will void the warranty. 6.2 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 Return 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: (800) global_support@westell.com Visit the Westell World Wide Web site at for additional information about Westell. 5.2 Part Numbers This equipment is identified by a product number (DBMA200-24), which consists of two parts: the assembly type (DBMA - Digital Broadcast Mounting Assembly) and model number (200-24). Repair and Return Voice: (630) rgmdept@westell.com 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. PECIFICATION 7.1 Regulatory/Agency pecifications 6. WARRANTY & REPAIR The mounting is designed to meet the following regulatory, safety, or environmental specifications or requirements: 6.1 Warranty Meets FCC Part 15, Class A requirements ANI/UL st Edition CAN/CA C22.2 NO NEB Level 3 Westell warrants this product to be free of defects at the time of shipment. Westell also warrants this product to be fully functional for the time period specified by the terms and conditions governing the sale of the product. Any attempt to repair or 5

6 ection DBM-A Rev. B 7.2 Ordering pecifications To order units, call the telephone number shown in Paragraph 5.1 and please specify a specific model number shown in Table Electrical and Physical pecifications The electrical and signaling specifications are listed below, and the physical specifications are shown in Table 6. Part # DBMA Description 24-position, D3 Mounting. CLEI* Code: NCM2YY0DRA; Barcode/ECI: CPR: Optional Equipment for use with the DBMA DBMAWB-24 Model DBMAWB-24, D3 Wall Mounting Bracket Locking cover for DBMA or DBMA A Power supply, 1.25A, -48Vdc 2560I1 Power supply, 2.5A, -48Vdc 1800I1 ingle slot mounting for 2560I1 power supply *CLEI is a trademark of Telcordia Technologies. Table 5. Ordering and Option Information A. Power: 22 to 56Vdc (-48V is typical, but +24Vdc also may be used to power the mounting) Physical Feature U.. Metric Height 6.75 in cm Width 19 in cm Depth 10.1 in cm Weight (approx.) 11 lbs kg Operating Temp. -40 to 149 F -40 to 65 C Humidity Table 6. 0 to 95% (non-condensing) Physical pecifications 6