1 Issue, April 998 Digital Link Cross Connect (DLx ) System User Manual Content Page TRODUCTION... Revision History... Trademark Information... Admonishments... Compliance Statement... Certification... Standards... List of Terms, Acronyms, and Abbreviations GENERAL DESCRIPTION... 4 A. Chassis Mounting and Cable Management Bracket... 4 B. 6-Circuit Chassis... 5 C. Coax Modules... 5 D. Equipment Rack/Cabinet... 6 E. Accessories... 7 F. Applications... 7 Basic Interconnect... 7 Interconnect with U-Link/Looping Cord (with and without monitor)... 7 Cross-Connect with Monitor... 8 G. Application Features... 9 H. Technical Specifications STALLATION... 0 A. Unpacking and Inspection... 0 B. Installing Chassis Mounting and Cable Management Brackets... C. Installing the Chassis to Rack Ground... 3 D. Installing Chassis... 3 E. Installing Horizontal Cable Trough... 5 F. Installing the Coax Modules... 5 G. Routing and Terminating the Network Element (Equipment) Cables... 5 Basic Interconnect Applications... Cross-Connect and Interconnect with U-Link/Looping Cord OPERATION... 3 A. Installing Cross-Connect Jumpers... 3 B. Installing U-Link/Looping Cords... 4 C. Typical Operational Procedures MATENANCE SYSTEM TEGRATION SERVICES CUSTOMER SUPPORT SERVICES Page 998, ADC Telecommunications, Inc.
2 Issue, April 998 TRODUCTION This manual provides descriptive, installation and operational information for the Digital Link Cross-Connect (DLx) System. Revision History ISSUE DATE REASON FOR CHANGE 4/98 Original Trademark Information ADC and ADC Telecommunications are registered trademarks of ADC Telecommunication Inc. DLX is a trademark of ADC Telecommunications Inc. Admonishments Important safety admonishments are used throughout this manual to warn of possible hazards to persons or equipment. An admonishment identifies a possible hazard and then explains what may happen if the hazard is not avoided. The admonishments in the form of Dangers, Warnings, and Cautions must be followed at all times. These warnings are flagged by use of the triangular alert icon (seen below), and are listed in descending order of severity of injury or damage and likelihood of occurrence. Danger: Danger is used to indicate the presence of a hazard that will cause severe personal injury, death, or substantial property damage if the hazard is not avoided. Warning: Warning is used to indicate the presence of a hazard that can cause severe personal injury, death, or substantial property damage if the hazard is not avoided. Caution: Caution is used to indicate the presence of a hazard that will or can cause minor personal injury or property damage if the hazard is not avoided. Compliance Statement The DLx System has been tested and found to comply with European requirements. Certification CE Approved Standards The following listing is a bibliography of applicable standards documents: ETSI Equipment Engineering (EE); European Telecommunication Standard For Equipment Practice ITU-T Recommendation G.703 Physical/Electrical Characteristics of Hierarchical Digital Interfaces, 99 Page 998, ADC Telecommunications, Inc.
3 Issue, April 998 D 4795 EN EN 550 EN IEC 69- IEC 68- IEC IEC IEC RF Connection.6/5.6; Characteristic Impedance 75 Ohms Product Safety EMC Compatibility EMC Immunity Radio-Frequency Connectors Part: General Requirements and Measuring Methods Basic Environmental Testing Procedures Environmental Testing Procedures Part : Tests Test FC: Vibration Basic Environmental Testing Procedures Part : Tests Test N: Change of Temperature Basic Environmental Testing Procedures P: Tests Test EA and Guidance: Shock List of Terms, Acronyms, and Abbreviations The explanation of terms and acronyms and abbreviations used in this manual are detailed in the following list: ANSI American National Standards Institute AWG American Wire Gauge Chassis A unit which houses individual components in a modular arrangement. Chassis Group A set of two chassis on mounting brackets. CKT Circuit Digital Signal Rates.048 Mbps (E) Mbps (E) Mbps (E3) Mbps (E4) 5.84 Mbps (STS-) 55.5 Mbps (STS-3) DLx Digital Link Cross-Connect DSX Digital Signal Cross-Connect ETS European Telecommunications Standard. ETSI European Telecommunications Standards Institute GND Ground IEC International Electrotechnical Commission Line-Up Racks or cabinets placed side-by-side MON Monitor NE Network Element. Also referenced as office equipment (e.g., channel bank, digital switch, etc.). Patch Cords A plug or multiple of plugs connected via a coax cable used to monitor, access, test, and patch circuits. Receive Transmit Page 3 998, ADC Telecommunications, Inc.
4 Issue, April 998. GENERAL.0 The DLx System provides a circuit access interface for network elements in digital transmission systems. The DLx System concentrates digital system signals in a centralized area providing the flexibility to be distributed in interconnect or cross-connect arrangements as desired by the customer. It also provides technicians the capability to perform circuit maintenance and service provisioning functions at a centralized location.. DESCRIPTION.0 The DLx System provides improved cable management and easy access for circuit monitoring and reconfiguration. The primary components of the system are: Chassis mounting and cable management bracket 6-circuit chassis Coax modules Equipment racks/cabinets A. Chassis Mounting and Cable Management Bracket.0 The chassis mounting and cable management bracket, as shown in Figure, has one 6- circuit chassis attached. The combination of two mounting brackets and two chassis is referred to as a chassis group, providing 3 module positions. Cable management tie bars are provided on the brackets for routing and securing network element cables, separating them from the U-link/looping cords and cross-connect jumpers. This provides efficient management of the coaxial cables and easy access to the coax connectors. Optional cross-connect jumper troughs are available (ordered separately) for cross-connect systems. The trough includes a cable guide plate to aid in the management of cross-connect jumpers between chassis. CABLE MANAGEMENT TIE BARS COAX MOUNTG POSITIIONS MOUNTG BRACKETS CABLE MANAGEMENT RGS MOUNTG SCREWS 04-A Figure. Chassis Group (one chassis shown) Page 4 998, ADC Telecommunications, Inc.
5 Issue, April 998 B. 6-Circuit Chassis.03 Each chassis is designed to house 6 individual circuit modules. Refer to Figure. The chassis provides a common platform such that any module type can be mounted into the same chassis providing flexibility for configuring the system to meet the needs of a variety of network applications. Cable management rings are provided at the top and bottom of the chassis, and a ground post is provided at the rear of the chassis for connecting to a local office ground. C. Coax Modules.04 Each coax module provides two.6/5.6 connectors for terminating cables. Modules with BT 43 and BNC connectors are also available. The modules include a designation card on the front for circuit identification and are fastened to the chassis by a thumb screw on the front of the module. A monitor is also available for some modules providing a permanent monitor port at the front for easy access. The monitor port allows non-intrusive access by providing a signal.5 db below the output signal. Different coax modules are available for a wide range of applications as shown in Table and Figure. Table. Coax Modules DESCRIPTION Basic Interconnect without Monitor Cross-Connect without Monitor Cross-Connect with Monitor CATALOG NUMBER DLX-300 DLX-300 DLX-300.6/5.6 TO.6/5.6 FEED THRU CONNECTOR () 0705-A Basic Interconnect without Monitor.6/5.6 TO.6/5.6 FEED THRU CONNECTOR () 0703-A Cross-Connect without Monitor.6/5.6 TO.6/5.6 FEED THRU CONNECTOR.6/5.6 TO.6/5.6 FEED THRU CONNECTOR W/MONITOR 045-A Cross-Connect with Monitor Figure. Basic Coax Modules Types and Connectors Page 5 998, ADC Telecommunications, Inc.
6 Issue, April For Basic Interconnect applications, only one module is required for connecting two network elements. All other applications require two modules and U-link/looping cords or crossconnect jumpers. It is important to be aware that the,, X- and X- markings on each module will vary according to the specific application as shown in Figure. D. Equipment Rack/Cabinet.06 The DLx System is designed to be installed in equipment racks and cabinets compliant with ETSI as shown in Figure 3. A typical ETSI rack will accommodate five chassis groups for a total of 30 terminations when configured for interconnect, or four chassis groups for a total of 56 terminations when configured for cross-connect. Further details are covered in the installation section of this manual x 5 = 05 5 MM CENTER TO CENTER ALL DIMENSIONS ARE METRIC (MM) X Ø B Figure 3. Typical ETSI Rack Page 6 998, ADC Telecommunications, Inc.
7 Issue, April 998 E. Accessories.07 The following accessories are available and must be ordered separately. Looping Cord. Patch Cords 75 Ohm Termination Plug.6/5.6 Connector Termination Kit U-Link Cross-Connect Jumpers Cross-Connect Jumper Ring Kit F. Applications.08 The following typical circuit arrangements can be achieved depending upon the module type selections: Basic interconnect Interconnect with U-Link/looping cord Interconnect with U-Link/looping cord and monitor Cross-Connect with monitor Basic Interconnect.09 This configuration uses one coax module providing high circuit density. Basic interconnect applications are the minimum required for providing test and access points between two network elements. See Figure 4. A B 0303-A Figure 4. Typical Basic Interconnect Application Interconnect with U-Link/Looping Cord (with and without monitor).0 Interconnect with U-Link/looping cord applications allow for improved cable management while offering easy access for circuit rearrangements. Applications using coax modules with Monitor also provide non-intrusive circuit monitoring. See Figure 5. Page 7 998, ADC Telecommunications, Inc.
8 Issue, April 998 X- X- A X- A X- MON RIGHT SIDE OF WHEN STALLED RIGHT SIDE OF WHEN STALLED X- X- B X- B X- With Monitor MON 0304-A Without Monitor 0305-A Figure 5. Typical U-Link/Looping Cord Applications Cross-Connect with Monitor. This application, as shown in Figure 6, provides a range of features: Improved cable management Easy access to cable for circuit rearrangement Non-intrusive circuit monitoring Less time for circuit rearrangement A REC X- X- NORMAL CIRCUIT DUAL CROSS-CONNECT JUMPER MON REC X- B X- MON 0306-A Figure 6. Typical Cross-Connect with Monitor Application Page 8 998, ADC Telecommunications, Inc.
9 Issue, April 998 G. Application Features. The major DLx system application features are listed in Table. Table. Application Features Application Features Improved cable management Easy access to cable for circuit rearrangement Non-intrusive circuit monitoring High circuit density Less time for circuit rearrangements Basic Interconnect X X Interconnect with U-Link/Looping Cord Interconnect with U-Link/Looping Cord and Monitor Cross-Connect with Monitor X X X X X X X X X H. Technical Specifications.3 The equipment space required for each chassis group is shown in Figure MM 39 MM 347 MM 0745-A Figure 7. Chassis Group Space Requirement Page 9 998, ADC Telecommunications, Inc.
10 Issue, April Specifications for the DLx system are listed in Table 3. Table 3. DLx Specifications PARAMETER Connector Type Electrical Performance Cross Talk Impedance Insertion Loss Monitor Level Return Loss Mechanical Insertion force Withdrawal force Environmental Temperature Operating temperature Non-operating temperature Humidity Other Performance Specifications SPECIFICATION.6/5.6 Connectors Better than 60 db (DC to 300 MHz) 75 ohm nominal Better than Mbps Note: Subject to change when using monitor port with load.5 ±.5 db below signal level 0 db (DC to 400 MHz) N maximum Center contact 50 g minimum Outer contact 70 g minimum 40qC to + 65qC ( 40qF to +49qF) 55qC to +85qC ( 67qF to +85qF 0% to 95% without condensation Available on request 3. STALLATION Warning: To avoid the possibility of severe and potentially fatal electric shock, never install electrical equipment in a wet location or during a lightning storm. 3.0 The installation of the DLx system consists of: A. Unpacking and inspection. B. Installing chassis mounting brackets. C. Installing chassis to rack ground. D. Installing chassis. E. Installing horizontal cable trough. F. Inserting the coax modules. G. Routing and terminating network element cables. A. Unpacking and Inspection 3.0 Remove all material from shipping containers and inspect for damage. If there are any damaged or missing parts, file a claim with the commercial carrier and notify ADC Customer Service. Refer to Section 7 of this manual for repair/replacement procedures. Page 0 998, ADC Telecommunications, Inc.
11 Issue, April 998 B. Installing Chassis Mounting and Cable Management Brackets 3.03 Chassis mounting hardware is provided in a kit that must be ordered separately. One kit is required for each chassis group (two chassis). Determine the mounting arrangement based on type of system, cross-connect or interconnect, and if the rack is on a raised floor or concrete floor. See Figures 8 and 9. CROSS-CONNECT TERCONNECT 3 4 GROUP GROUP GROUP 4 GROUP 5 4 RACK SPACES 8 3 RACK SPACES CABLE ENTRY CABLE ENTRY 045-A Figure 8. Raised Floor Chassis Mounting Positions Page 998, ADC Telecommunications, Inc.
12 Issue, April 998 CABLE ENTRY CABLE ENTRY RACK SPACES 6 RACK SPACES GROUP GROUP GROUP GROUP 4 5 CROSS-CONNECT TERCONNECT 04-A Figure 9. Concrete Floor Chassis Mounting Positions 3.04 Attach chassis mounting brackets for each chassis group as follows:. Locate the chassis mounting kits.. Determine the rack mounting positions for each chassis mounting. Refer to Figure 8 or Install the chassis mounting brackets in the appropriate rack mounting positions using cage nuts and screws provided with kit. See Figure 0. Do not tighten mounting screws at this time. Page 998, ADC Telecommunications, Inc.
13 Issue, April 998 TO GROUND POST TO RACK GROUND 0699-A Figure 0. Chassis Mountings C. Installing the Chassis to Rack Ground 3.05 Chassis and rack ground wire requirements must conform to local regulations. Each chassis is designed to be grounded to the rack. The rack to central exchange ground must be locally provided. A chassis ground post is located on the rear of each chassis. ADC recommends using mm ( AWG) or equivalent wire from the chassis ground post to the rack ground Prepare the chassis ground to rack ground wire as follows:. Prepare an appropriately sized ground wire that will reach from each chassis ground post to the rack ground. Allow enough length to route the wires along the mounting bracket up to the top of each chassis.. Feed the ground wire along the mounting brackets. Refer to Figure 0. The chassis ground wires can be routed both to the left, both to the right or separately to the left and right depending on the location of the rack ground. Secure chassis ground wires to tie lances provided along chassis mounting bracket. 3. Connect the wire at the rack end only at this time, leave the chassis end until the chassis is prepared and ready for mounting. D. Installing Chassis 3.07 For interconnect applications, chassis connecting plates are attached to the bottom of one chassis and the top of the chassis below it. See Figure. For cross-connect applications crossconnect jumper troughs with cable guide plates are available and must be ordered separately. Refer to Figure. When the cross-connect jumper troughs are used, the chassis connecting plates provided are not used. Page 3 998, ADC Telecommunications, Inc.
14 Issue, April Prepare and mount the chassis as follows:. Ensure the chassis mounting screws are backed out far enough for the chassis to hang on them. Refer to Figure 0.. Align keyholes at rear of chassis over mounting screws, place chassis on screws and tighten screws. Note: Always install chassis furthest from cable entrance first. Refer to Figures 8 and Repeat Steps through for remaining chassis. 4. Skip step 4, for cross-connect applications. For interconnect applications attach the chassis connecting plate between adjacent chassis as shown in Figure A or B. Only attach plates to connect adjacent chassis. Do not install plate on last chassis group. Note: It may be necessary to loosen chassis mounting screws to align mounting holes. 5. Connect the chassis end of the rack ground to the ground post located on the rear of the chassis. See Figure. 6. Return to all chassis mounting bracket screws and tighten securely. FOR TERCONNECT APPLICATIONS STALL CONNECTG PLATES FOR TERCONNECT APPLICATIONS STALL CONNECTG PLATES FOR CROSS-CONNECT APPLICATIONS STALL TROUGH AND CABLE GUIDE PLATE FOR CROSS-CONNECT APPLICATIONS STALL TROUGH AND CABLE GUIDE PLATE 047-A 44-A Figure A. Chassis Preparation Raised Floor Figure B. Chassis Preparation Concrete Floor Page 4 998, ADC Telecommunications, Inc.
15 Issue, April 998 REAR VIEW GROUND POST 0409-A Figure. Chassis Ground Wire Connection E. Installing Horizontal Cable Trough 3.09 For cross-connect applications attach horizontal cable troughs with cable guide plate to the bottom of each chassis as shown in Figure A or B. When placed between two chassis, attach bottom of trough to top of chassis below. Note the orientation of the cable guide plate for raised floor and concrete floors. Note: It may be necessary to loosen chassis mounting screws to align mounting holes for cable trough. F. Installing the Coax Modules 3.0 The coax modules are shipped separately. Assignment of each module to chassis position must be done locally. The circuit designations must be available when installing the modules. Select an appropriate coax module, fill in the designation label and insert in the module. Place the module in its designated chassis position. Do not tighten module fastener at this time. G. Routing and Terminating the Network Element (Equipment) Cables 3. Network element and cables must be 75 ohm coax type. The cable size and type will determine the distance from the network element to the coax module. The recommended lengths for RG59 and 735 cable types used for each application are as shown in Figures 3, 4 and 5, and Tables 3, 4 and 5. The lengths are based upon typical attenuation values for the cable at each frequency (digital signal rate). Page 5 998, ADC Telecommunications, Inc.
16 Issue, April 998 EQUIPMENT CABLES CROSS-CONNECT JUMPERS () (NE) () X- X- COAX TOTAL LOSS BUDGET COAX X- X- () (NE) () 0700-A Figure 3. Cross-Connect Applications EQUIPMENT CABLES () () (NE) () COAX (NE) () TOTAL LOSS BUDGET 070-A Figure 4. Basic Interconnect Applications EQUIPMENT CABLES U-LK/ LOOPG CORD A COAX X- X- B COAX X- X- TOTAL LOSS BUDGET 0707-A Figure 5. Interconnect with U_Link/Looping Cord Applications Page 6 998, ADC Telecommunications, Inc.
17 Issue, April 998 Table 3. Coax Cable Lengths for.048 and Mbps LOSS BUDGET (DB) CABLE LENGTH (METERS) APPLICATION TOTAL LOSS BUDGET EQUIPMENT CABLES DLX COAX CROSS- CONNECT JUMPERS CABLE TYPE EQUIPMENT CABLES Basic 6 db.9 0. RG m Interconnect m BT m Interconnect 6 db.9 0. RG m with U-Link m BT m Interconnect 6 db.9 0. RG m U-Link & m CROSS- CONNECT JUMPERS Monitor BT m Cross-Connect 6 db RG m 8 m with Monitor m 8 m BT300 Cross- Connects BT m 8 m Table 4. Coax Cable Lengths for , 5.84 and Mbps LOSS BUDGET (DB) CABLE LENGTH (METERS) APPLICATION TOTAL LOSS BUDGET EQUIPMENT CABLES DLX COAX CROSS- CONNECT JUMPERS CABLE TYPE EQUIPMENT CABLES CROSS- CONNECT JUMPERS Basic db RG m Interconnect m Interconnect db RG m with U-Link m Interconnect db RG m U-Link & Mon m Cross-Connect db RG 59 4 m 8 m with Mon m 8 m Page 7 998, ADC Telecommunications, Inc.
18 Issue, April 998 Table 5. Coax Cable Lengths for 55.5 Mbps LOSS BUDGET (DB) CABLE LENGTH (METERS) APPLICATION TOTAL LOSS BUDGET EQUIPMENT CABLES DLX COAX CROSS- CONNECT JUMPERS CABLE TYPE EQUIPMENT CABLES CROSS- CONNECT JUMPERS Basic.7 db RG m Interconnect m Interconnect.7 db RG m with U-Link m Interconnect.7 db RG m U-Link & Mon m Cross-Connect.7 db RG m 8 m with Mon m 8 m Table 6. Cable Dimensions CABLE TYPE 735A RG 59 BT003 BT300 Center Conductor Diameter 0.40 mm 0.58 mm 0.6 mm 0.35 mm Dielectric Diameter.93 mm 3.7 mm 3.7 mm.95 mm Dielectric Material polyethelyne polyethelyne polyethelyne polyethelyne Sheath Diameter 3.3 mm 6.5 mm 6.7 mm 3.55 mm 3. The DLx System is designed to route network equipment cables to the left side, as viewed from the front, of each chassis and U-Link/looping cords or cross-connect jumpers connected to the right side. For basic interconnect applications, the right-hand side is also used for routing network equipment cables. Page 8 998, ADC Telecommunications, Inc.
19 Issue, April The routing of network element cables to each chassis group depends upon system configuration, interconnect or cross-connect, and rack floor mounting, raised floor or concrete floor. See Figure 6. When network element cables enter the rack from the bottom (raised floor), the cables are routed to chassis group (top) first and then work down. When the network element cables enter the rack from above, the network element cables are routed to chassis group (bottom) and then work up. Route cables to chassis using the recommended pattern for each chassis. See Figures 7 and 8. TOP CABLE ENTRY GROUP GROUP 4 CABLES GROUP GROUP 3 GROUP 3 GROUP GROUP 4 CABLES GROUP BOTTOM CABLE ENTRY RAISED FLOOR CONCRETE FLOOR 0706-A Figure 6. Network Element Cable Routing Page 9 998, ADC Telecommunications, Inc.
20 Issue, April 998 GROUP GROUP GROUP 4 LEGEND: 3 CABLES TO EACH Network element and cables to chassis group Reserve for cross-connect jumpers GROUP A Figure 7. Raised Floor Network Element Cable to Chassis Group Routing Page 0 998, ADC Telecommunications, Inc.
21 Issue, April 998 LEGEND: 3 CABLES TO EACH Network element and cables to chassis group Reserve for cross-connect jumpers GROUP GROUP GROUP GROUP 0395-A Figure 8. Concrete Floor Network Element Cable to Chassis Group Routing Basic Interconnect Applications 3.4 For basic interconnect applications the network element cables are routed to both sides of the chassis for connections to the coax modules. See Figure 9. Always route cables to chassis group, furthest from the cable entry, first and work towards the last chassis group. Cross-Connect and Interconnect with U-Link/Looping Cord 3.5 For these applications the network element and cables always connect to the left side of the module. The cross-connect jumpers and U-Link/looping cord always connect to the right side of the module. See Figures 0 and. Page 998, ADC Telecommunications, Inc.
22 Issue, April Recommended cable connections on each module type for typical arrangements are shown in Figures 9, 0 and. Each module must be at the out stop position when making network element connections. Then tie the cable bundles off at the succeeding chassis group mounting bracket, refer to Figure 7 or 8. This will provide slack for sliding the coax module in and out of the chassis. CABLES CABLES CABLES U-LK/LOOPG CORD X- X- 034-A 03-A Figure 9. Basic Interconnect without Monitor Figure 0. Basic Cross-Connect without Monitor CABLES CROSS-CONNECT JUMPERS OR U-LKS/LOOPG CORDS X- X- 033-A Figure. Cross-Connect With Monitor Page 998, ADC Telecommunications, Inc.
23 Issue, April OPERATION 4.0 Operation of the DLx system consists of establishing circuits with cross-connect jumpers, looping cords or interconnection of network element cables at the coax module. In addition to establishing normal circuit connections, maintenance test setups can be performed at the coax module. A. Installing Cross-Connect Jumpers 4.0 Cross-Connect jumpers always connect to the right side of the coax module. The connections between origination and destination chassis must follow basic rules to maintain good cable management. All jumpers leaving a chassis or chassis group must follow a path that only changes directions at a cable ring. See Figure. CABLE RE COLUMN A B ORIGATG GROUP DESTATION GROUP CABLE RE COLUMN A CABLE RE COLUMN B GROUP Down Up Down Down 3 Down Down 4 Down Down GROUP Up Up Down Up 3 Down Down 4 Down Down GROUP 3 3 Up Up 3 Up Up 3 3 Down Up 3 4 Down Down GROUP 4 4 Up Up 4 Up Up 4 3 Up Up A B CABLE RE COLUMN 4 4 Down Up 077-A. Start at originating chassis group.. Route cable either up or down to destination module as indicated by Cable Route Column A. 3. Route cable horizontally to right column of chassis, Cable Route Column B. 4. Route cables either up or down to destination module as indicated by Cable Route Column B. Figure. Cross-Connect Jumper Routing Page 3 998, ADC Telecommunications, Inc.
24 Issue, April 998 B. Installing U-Link/Looping Cords 4.03 U-link/looping cords are used in an interconnect application only. U-link/looping cords always connect to the right side of the coax module. An interconnect application provides greater density per frame because there are no horizontal troughs, allowing room for an additional chassis group (five in total), as shown in Figure 3. GROUP GROUP GROUP 3 GROUP 4 GROUP 5 47-A Figure 3. Interconnect Application C. Typical Operational Procedures 4.04 The following procedures illustrate typical operational arrangements. Page 4 998, ADC Telecommunications, Inc.
25 Issue, April 998 PROCEDURE TEST SET CONNECTION This procedure illustrates connecting test set to monitor ports for non-intrusive testing of crossconnected circuits. STEP PROCEDURE Connect appropriate test equipment to the Monitor ports and perform test. Remove test equipment when testing is complete A X- X- NORMAL CIRCUIT DUAL CROSS-CONNECT JUMPER MON TEST EQUIPMENT X- B X- MON 048-A Page 5 998, ADC Telecommunications, Inc.
26 Issue, April 998 PROCEDURE BYPASS A FAILED A CROSS-CONNECTED CIRCUIT This procedure is used to bypass a failed network element. This illustration represents a near-end office cross-connect application. STEP PROCEDURE Select a standby network element to which communications between two interrupted sites will be rerouted At both sites interrupted by the failed network element, patch the network element to the standby network element as follows: a. Remove the cross connect jumpers from network elements A and B coax modules. b. Place temporary patch cords between network element B and standby network element C coax modules c. Place 75 ohm termination plugs on the network element A coax module connectors 3 Service is now temporarily restored between the interrupted sites. 4 After the failed network element is repaired, reconnect the cross-connect jumpers between network element A and B coax modules. a. Remove 75 ohm termination plugs on network element A coax module. b. Remove the temporary patch cords between standby network element C coax module and network element B coax module. c. Reconnect normal cross-connect jumpers between network elements A and B coax modules. TEMPORARY TERMATION PLUGS FAILED A X- X- NORMAL CIRCUIT DUAL CROSS-CONNECT JUMPER MON B X- X- TEMPORARY PATCH CORDS MON STANDBY C X X MON 040-A Page 6 998, ADC Telecommunications, Inc.
27 Issue, April 998 PROCEDURE 3 BYPASS A FAILED A BASIC TERCONNECT CIRCUIT This procedure is used to bypass a failed network element. This illustration represents a near-end office interconnect application. STEP PROCEDURE Select a standby network element to which communications between two interrupted sites will be rerouted At both sites interrupted by the failed network element, patch the network element to the standby network element as follows: a. Remove the failed network element B cables from the coax module. b. Place temporary patch cords between coax module and standby network element C. c. Place 75 ohm termination plugs on the network element B cables. 3 Service is now temporarily restored between the interrupted sites. 4 After the failed network element is repaired, reconnect the normal circuit connections between network element A and B coax modules. a. Remove 75 ohm termination plugs on network element B coax module. b. Remove the temporary patch cords between standby network element C coax module and network element A coax module. c. Reconnect normal circuit connections between network elements A and B coax modules. NORMAL CIRCUIT CONNECTIONS A FAILED B TEMPORARY PATCH CORDS TEMPORARY TERMATION PLUGS STANDBY C 04-A Page 7 998, ADC Telecommunications, Inc.
28 Issue, April 998 PROCEDURE 4 BYPASS A FAILED A TERCONNECT CIRCUIT WITH U-LK/LOOPG CORD This procedure is used to bypass a failed network element. This illustration represents a near-end office interconnect application. STEP PROCEDURE Select a standby network element to which communications between two interrupted sites will be rerouted At both sites interrupted by the failed network element, patch the network element to the standby network element as follows: a. Remove the U-Link/Looping cords from network elements A and B coax modules. b. Place temporary patch cord between network element B coax module X- and standby network element C coax module X-. c. Place temporary patch cord between network element A coax module X- and standby network element C coax module X-. d. Place 75 ohm termination plugs on the network element A coax module X- and network element B coax module X- connectors 3 Service is now temporarily restored between the interrupted sites. 4 After the failed network element is repaired, reconnect the U-Link/Looping cords on network element A and B coax modules as follows: a. Remove 75 ohm termination plugs on network element A and B coax modules. b. Remove the temporary patch cords between standby network element C coax module and network elements A and B coax modules. c. Reconnect normal U-Link/Looping cords on network elements A and B coax modules. FAILED X- TEMPORARY TERMATION PLUG A X- NORMAL CIRCUIT LOOPG CORDS B X- X- TEMPORARY TERMATION PLUG TEMPORARY LOOPG CORDS X- C X A Page 8 998, ADC Telecommunications, Inc.
29 Issue, April 998 PROCEDURE 5 LOOP BACK S This procedure illustrates a loop back test setup for a near-end office cross-connect application. STEP PROCEDURE Remove the cross-connect jumpers from network element A and B coax modules. Connect looping cords to network element A and B coax modules 3 Remove looping cords when testing is complete 4 Reconnect cross- connect jumpers to network element A and B coax modules A X- X- NORMAL CIRCUIT DUAL CROSS-CONNECT JUMPER MON X- TEMPORARY LOOPG CORDS B X- MON 04-A Page 9 998, ADC Telecommunications, Inc.
30 Issue, April 998 PROCEDURE 6 LOOP BACK S This procedure illustrates a loop back test setup for a near-end office interconnect application STEP PROCEDURE Remove the looping cords from network element A and B coax modules. a. Connect looping cord between network element A coax module and network element B coax module. b. Connect looping cord between network element A coax module and network element B coax module. 3 Remove looping cords when testing is complete 4 Reconnect looping cords to network element A and B coax modules TEMPORARY A LOOP BACK X- A X- NORMAL CIRCUIT LOOPG CORDS X- B X- TEMPORARY B LOOP BACK 043-A Page , ADC Telecommunications, Inc.
31 Issue, April MATENANCE 5.0 If replacement of jack to cable connectors is required, refer to Installation Section E Routing and Terminating Network Element (Equipment) Cables for detailed connector installation instructions. 6. SYSTEM TEGRATION SERVICES 6.0 ADC offers the following system integration services. For calls originating in the U.S.A. or Canada, dial , extension For calls originating outside the U.S.A. or Canada, dial Technical Assistance Center Product Management Project Engineering Project Administration Network Design Broadband Design (RF Design and Strand Mapping) Integration Network Testing Network Monitoring (Upstream or Downstream) Power Monitoring Remote Surveillance System Turn-Up and Test Service/Maintenance Agreements Technical Training Product Technology Custom Designed Training Technical Operations Detail Engineering End-to-End Installation Drafting Services 7. CUSTOMER SUPPORT SERVICES 7.0 ADC offers the following customer support services. For calls originating in the U.S.A. or Canada, dial , then request the extension listed. For calls originating outside the U.S.A. or Canada, dial or BCG Technical Assistance Center Technical Information Extension 3475 System/Network Configuration Product Specification Product Application Training Installation and Operation Assistance Troubleshooting and Repair Field Assistance Sales Administration Quotation Proposals Extension 3000 Ordering Delivery General Product Information Product Return Department ADC Return Authorization number and instructions Extension 3000 must be obtained before returning products Product information and service can also be obtained by writing ADC Telecommunications, Inc., P.O. Box 0, Minneapolis, Minnesota , U.S.A. Page 3 998, ADC Telecommunications, Inc.
32 Issue, April 998 Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In no event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits and ADC further disclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of liability applies to all products, publications and services during and after the warranty period. This publication may be verified at any time by contacting ADC s Technical Assistance Center at , extension 33 (in U.S.A. or Canada) or (outside U.S.A. and Canada), or by writing to ADC Telecommunications, Inc., Attn: Technical Assistance Center, Mail Station #77, P.O. Box 0, Minneapolis, MN , U.S.A. 998, ADC Telecommunications, Inc. All Rights Reserved Printed in U.S.A. Page 3
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