DIGITAL DISTRIBUTING FRAME (DDF) INSTALLATION PROCEDURES FOR PANELS AND MODULES

DIGITAL DISTRIBUTING FRAME (DDF) INSTALLATION PROCEDURES FOR PANELS AND MODULES CommScope 365-301-136-1 Instruction Sheet Issue 10, February 2004 Material ID 847 591 963 General The Digital Distributing Frame (DDF) is a 75-ohm frame system that serves as an equal level cross-connect point for signals conforming to the DS3 (44.76 Mb/s), CEPT-1 (2.048 Mb/s), CEPT-2 (8.448 Mb/s), CEPT-3 (34.368 Mb/s), CEPT-4 (139.264 Mb/s), and STM-1 (155.52 Mb/s) signal formats. The modules allow access to all equipment terminated at the frame and provide a flexible cross-connect between two Network Elements. Equipment Description The DDF system consists of individual DDF modules mounted in a panel. There are three types of DDF modules: the Rear/Front DDF Dual Monitor (R/F-DDF-DM), the DDF Performance Module (DDF-PM), and the Rear/Rear DDF Dual Monitor (R/R-DDF-DM). The DDF-DM modules have two protected monitor-level ( 20 db) jacks to provide nonservice interrupt monitoring of all circuits. The DDF-PM modules have a single protected monitor level jack. The Rear/Front DDF Dual Monitor (R/F-DDF-DM) module, shown in Figure 1, is equipped with six BNC connectors. Four BNC connectors are located on the front of the module: MON-O (Monitor Out), MON-I (Monitor In), OUT, and IN. Two BNC connectors are located on the rear of the module: TX and RX (Out transmit and In receive, respectively). MON-O MON-I 0.75" (19 mm) OUT 3.6" (92 mm) 0.8" (21 mm) TX Out (transmit) IN 0.75" (19 mm) 1" (25 mm) RX 0.62" (16 mm) Front Side Rear Fig01DDF-DM.wmf Figure 1. Digital Distribution Frame Dual Monitor (DDF-DM) The Rear/Rear Dual Monitor (R/R-DDF-DM) module (shown in Figure 2) is equipped with six BNC connectors. Four BNC connectors are included on the front of the module: OUT, IN, TX (Out transmit), and RX (In receive). This module is snapped into panels from the rear for rear cross-connect applications. The DDF Performance Module (DDF-PM) is equipped with five BNC connectors. Three BNC connectors are located on the front of the module: MON, OUT, and IN. Two BNC connectors are located on the rear of the module: TX and RX (Out transmit and In receive, respectively). 2007 CommScope, Inc. All Rights Reserved Printed in U.S.A. Page 1

Instruction Sheet OUT IN MON-O TX MON-I RX Fig02RR-DDF-DM.wmf Figure 2. Rear/Rear Digital Distribution Frame Dual Monitor (R/R-DDF-DM) Module The R/F panels are available in both 32-module and 24-module arrangements and mount horizontally in either a 23-inch (600 mm) wide bay frame (32-module version) or a 19-inch (500 mm) wide bay frame (24 module version). The 24-module Rear/Rear panel includes adapter brackets for mounting in a 23-inch (600 mm) wide bay frame. The 32-module R/F-DDF panel, shown in Figure 3, mounts horizontally in a 23-inch (600 mm) wide network bay frame. A 7-foot (2.1 m) bay frame can accommodate up to 12 panels for a total of 384 circuits, or if the optional horizontal trough is used, up to nine panels for a total of 288 circuits. 22.2" (566 mm) 6.8" (175 mm) Figure 3. DDF 32-Module Panel With Optional Horizontal Trough Fig03DDF 32-Mod.wmf Page 2

Issue 10, February 2004 The 24-Module R/F DDF panel, shown in Figure 4, mounts horizontally in a 19-inch (500 mm) wide network bay frame. A 7-foot (2.1 m) bay frame can accommodate up to 12 panels for a total of 288 circuits, or if the optional horizontal trough is used, up to nine panels for a total of 216 circuits. Figure 4. DDF 24-Module Panel With Optional Horizontal Trough Fig04DDF 24-Mod.wmf The 24-module R/R DDF panel shown in Figure 5 mounts horizontally in a 19-inch (500 mm) wide network bay frame; or, if the supplied adapter brackets are used in a 23-inch (600 mm) wide network bay frame. A 7-foot (2.1 mm) bay frame can accomodate up to 15 panels for a total of 360 circuits. 18.3" (465 mm) 4.0" (101.6 mm) Fig05 24-Mod RR DDF.wmf Figure 5. 24-Module R/R DDF Panel The DDF system may be configured for front or rear cross-connect and interconnect applications. A complete line of network bay frames, framework hardware, and patch and test cords are available to support installation, cable management, and operations. Page 3

Instruction Sheet Features of the DDF include the following: Compatible with DS3, CEPT-1, CEPT-2, CEPT-3, CEPT-4, and STM-1 signal rates. BNC connectors are equipped with a locking mechanism for both the patch cords (in cross-connect arrangements). Recommended front cross-connect arrangement allows easy access for patching around faulty equipment. Ground-isolated modules (no separate grounding required at the DDF). Test cords are equipped with easy to use, push-on BNC connectors. Patch cords are equipped with locking BNC connectors. Standard BNC connectors are available from a variety of sources for any coaxial cable type. Two standard panel sizes are available, while other panel sizes are available upon request. R/F Panels include a heavy-duty hinge incorporated into the bottom, which allows it to swing forward for easy access to the rear of the panel. This feature is especially useful when mounting in a cabinet. How to Contact Us To find out more about Carrier Apparatus products, visit us on the web at: http://cw.commscope.com/ For technical assistance regarding Carrier Apparatus products: contact your local CommScope account representative or CommScope technical support at 1-800-344-0223. Report any missing or damaged parts to CommScope customer service in Omaha, Nebraska, at 1-866-539-2795. References 860220078 Digital Distributing Frame (DDF) System Reference Guide More product documentation for Digital Distributing Frames is available at the following CommScope web address: http://cw.commscope.com/eng/index.html click Support & Documentation. Tools Required Flat-blade 0.2-inch (5 mm) wide, 6-inch (152 mm) long screwdriver Page 4

Issue 10, February 2004 Ordering Information Table 1: DDF Panel and Module Ordering Information Apparatus Code Material ID Description Patch and Test Cords DDF-WCA1-02-PBNC 107 200 545 Test Cord, single push-on BNC to BNC, 6 feet 6 inches (2 m) Long DDF-WCA1-03-PBNC 107 200 552 Test Cord, single push-on BNC to BNC, 9 feet 10 inches (3 m) Long DDF-PC1A-00-BNC 107 200 560 Locking U-link Cord, single BNC to BNC, 4 inches (100 mm) Long DDF-PC1A-01-BNC 107 200 578 Patch Cord, single BNC to BNC, 3 feet 2 inches (1 m) Long DDF-PC1A-02-BNC 107 200 586 Patch Cord, single BNC to BNC, 6 feet 6 inches (2 m) Long DDF-PC1A-03-BNC 107 200 594 Patch Cord, single BNC to BNC, 9 feet 10 inches (3 m) Long DDF-PC1A-04-BNC 107 200 602 Patch Cord, single BNC to BNC, 13 feet 1 inches (4 m) Long DDF-PC1A-06-BNC 107 200 628 Patch Cord, single BNC to BNC, 19 feet 7 inches (6 m) Long DDF-PC2A-01-BNC 107 200 651 Patch Cord, duplex BNC to BNC, 3 feet 2 inches (1 m) Long DDF-PC2A-02-BNC 107 200 669 Patch Cord, duplex BNC to BNC, 6 feet 6 inches (2 m) Long DDF-PC2A-03-BNC 107 200 677 Patch Cord, duplex BNC to BNC, 9 feet 10 inches (3 m) Long DDF-PC2A-04-BNC 107 200 685 Patch Cord, duplex BNC to BNC, 13 feet 1 inches (4 m) Long DDF-PC2A-06-BNC 107 200 701 Patch Cord, duplex BNC to BNC, 19 feet 7 inches (6 m) Long Modules DDF-1B-01 107 538 597 Single DDF-PM assembly DDF-1B-24 107 538 605 Package of 24 DDF-PM modules DDF-DM-1B-01 107 917 163 Single DDF-DM assembly. Rear/Front cabled DDF-DM-1B-24 107 922 171 Package of 24 DDF-DM Rear/Front cabled modules DDF-DM-1B-32 107 922 189 Package of 32 DDF-DM Rear/Front cabled modules DDF-DM-NE-1B-01 107 922 197 Single DDF-DM assembly. Rear/Rear cabled. DDF-DM-NE-1B-24 107 922 205 Package of 24 DDF-DM Rear/Rear cabled modules Panels DDF-1B500-24/4BNC 107 538 548 Hinged, cross-connect/interconnect panel equipped with 24 single monitor modules for 19-inch (500 mm) bay and cabinets. DDF-1B600-32/EMP 107 538 563 Hinged, empty panel that can accommodate up to 32 modules, for 23- inch (600 mm) bay. DDF-1B600-32/4BNC 107 538 571 Hinged, cross-connect/interconnect panel equipped with 32 single monitor modules for 23-inch (600 mm) bay. DDF-1B600-SHLF 107 665 440 Horizontal trough for use with 23-inch (600 mm) panel, includes circuit identification label. DDF-1B500-SHLF 107 665 432 Horizontal trough for use with 19-inch (500 mm) panel, includes circuit identification label. DDF-DM-1A600-32/6BNC 107 970 543 Hinged, cross-connect/interconnect panel equipped with 32 dual monitor R/F modules for 23-inch (600 mm) bay. DDF-DM-1A600-32/6EMP 107 991 358 Hinged, empty panel that can accomodate up to 32 modules, for 23-inch (600 mm) bay. DDF-DM-1A500-24/5BNC 108 387 192 Hinged cross-connect/interconnect panel equipped with 24 dual monitor modules for 19 inch (500 mm) bay. Page 5

Instruction Sheet Apparatus Code Material ID Description DDF-DM-NE-1A500-24/ 4EMP DDF-DM-NE-1A500-24/ 4BNC 760 012 054 Empty panel for rear/rear applications that can accomodate up to 24 modules for 19-inch (500 mm) or 23-inch (600 mm) bays. 760 011 064 Cross-connect/interconnect panel equipped with 24 dual monitor R/R modules for 19-inch (500 mm) or 23-inch (600 mm) bays. Panel Installation Configurations AD-8C500-50 Group 5 AD8C50050G5 For Rear/Rear Applications: 7-foot (21 mm) high, 23-inch (600 mm) wide, unequal flange, Network Bay Frame with 5-inch guard rail cover on open duct side. AD-8C501-50 Group 1 AD8C50150G1 For All Rear/Front Applications: 7-foot (2.1 m) high, 23-inch (600 mm) wide, unequal flange, Network Bay Frame with 5-inch guard rail cover on closed duct side. ED-6C157-30 Group 12 ED6C15730G12 One 8x8 inch lower express trough and extension bracket ED-6C157-30 Group 16 ED6C15730G16 One 8x10 inch upper horizontal express trough ED-6C157-30 Group 36 ED6C15730G36 Single full vertical trough. Includes label set, label holder, cover, and mounting hardware. ED-6C157-30 Group 37 ED6C15730G37 Single half vertical trough. Includes label set, label holder, cover, and mounting hardware. ED-6C157-30 Group 51 ED6C15730G51 5-inch bay spacing hardware ED-6C157-31 Group 5 ED6C15731G5 For Rear/Front Cross-Connect Application Only: Bay hardware. Includes upper and lower express troughs, six rear cable brackets, bay spacing hardware, guard rail extension kit, rear cable cover kit, two jumper retainers, and mounting hardware. ED-6C157-31 Group 6 ED6C15731G6 For Rear/Front Interconnect Application Only: Interconnect bay hardware. Includes six rear cable brackets, rear cable cover kit, and mounting hardware. ED-6C157-31 Group 7 ED6C15731G7 For Cross-Connect Application Only: Full vertical troughs. Includes 12 full vertical troughs, 12 label sets, 24 label holders and covers, and mounting hardware. ED-6C157-31 Group 8 ED6C15731G8 For Cross-Connect Application Only: Half vertical troughs. Includes 12 half vertical troughs, 12 label sets, 24 label holders and covers, and mounting hardware. Page 6

Issue 10, February 2004 PANEL INSTALLATION FOR R/F PANELS ON 5-INCH (127 mm) CENTERS Rear/Front cabled panels should be installed on 5-inch (127 mm) centers if the optional horizontal troughs are not used, as shown in Figure 6. Panels should be installed on 7-inch (178 mm) centers if the optional horizontal troughs are used as shown in Figure 7 on page 8. 1. Mount the framework hardware and panels in the locations shown in Figure 6. Note: Figure 6 shows an upper and lower express trough and vertical trough used in Front-Cross Connect applications only. Disregard this information if using Interconnect application. Panels are mounted on top of the vertical troughs and the upper and lower express troughs are used to route and manage cross-connect cords running between adjacent bays. 2. Route Network Element cabling into the bay frame from either the top or bottom (depending upon site requirements). Fig06 installation for 5-inch panels.wmf Hole #73 12 Upper express trough 14" (356 mm) Hole #67 11" (279 mm) Hole #69 11 Hole #62 10" (254 mm) 10 9 8 Hole #57 Hole #52 Hole #47 Hole #59 10" (254 mm) Hole #49 7 6 Hole #42 Hole #37 10" (254 mm) Hole #39 5 H ole #32 10" (254 mm) 4 3 H ole #27 H ole #22 Hole #29 10" (254 mm) 2 H ole #17 Hole #19 REAR CABLE BRACKET 1 H ole #12 Vertical trough Lower express trough H ole #7 11" (279 mm) H ole #8 H ole #6 10" (254 mm) Rear cable enclosure Rear cable cover Front view 4" (102 mm) Rear view Figure 6. Panel Installation for Panels on 5-Inch (127 mm) Centers Page 7

Instruction Sheet PANEL INSTALLATION FOR R/F PANELS ON 7-INCH (178 mm) CENTERS Rear/Front cabled panels should be installed on 7-inch (178 mm) centers if optional horizontal troughs are used as shown in Figure 7. Panels should be installed on 5-inch (127 mm) centers if optional horizontal troughs are not used, as shown in Figure 6. 1. Mount the framework hardware and panels in the locations shown in Figure 7. Note: Figure 7 shows an upper and lower express trough and vertical trough used in Front-Cross Connect applications only. Disregard this information if using Interconnect application. Panels are mounted on top of the vertical troughs and the upper and lower express troughs are used to route and manage cross-connect cords running between adjacent bays. 2. Route Network Element cabling into the bay frame from either the top or bottom (depending upon site requirements). Fig07 installation for 7-inch panels.wmf Hole #73 Upper express trough 11" (279 mm) 15" (381 mm) 9 Hole #69 H ole #65 8 H ole #62 14" (356 mm) 7 H ole #55 H ole #51 6 H ole #48 14" (356 mm) 5 H ole #41 H ole #37 4 H ole #34 14" (356 mm) 3 H ole #27 H ole #23 2 HOLE #20 Rear cable bracket 1 HOLE #13 H ole #7 H ole #8 H ole #6 Rear cable enclosure Lower express trough 11" (279 mm) 10" (254 mm) Rear cable cover Front view 4" (102 mm) Rear view Figure 7. Panel Installation for Panels on 7-Inch (178 mm) Centers Page 8

Issue 10, February 2004 WATERFALL CABLING FOR REAR/FRONT CABLED PANELS Cabling for equipment terminated on Panels 1 through 12 uses the waterfall cabling method. A DDF system comprised of 12 panels and using waterfall cabling is shown in Figure 8. 1. Cable the equipment terminated on Panel Position No. 1 in the left most slot (as viewed from rear of bay frame) of the rear cable brackets. Cabling for other panels are routed in their respective bracket slots, continuing from the left. As an example, cabling for Panel No. 2 is routed in the second slot from the left. This cabling scheme continues until cabling for Panel No. 12 is routed in the right-most slot. 2. Secure cabling to the rear cabling brackets with cable ties or lacing material, depending on local practices. 3. Route cables to the bottom of the panel and spread across the rear of the panel. 4. Install BNC connectors and connect cables as follows: Transmit from N.E. No. 1 to upper BNC port on rear of module. Receive from N.E. No. 1 to lower BNC port on rear of module. Equipment cabling Panel # 12 Panel # 11 Panel # 10 Panel # 9 Panel # 8 N.E. # 1 -Transmit Panel # 7 Panel # 6 Panel # 5 Module (Rear View) N.E. # 1 - Receive Panel # 4 Panel # 3 Panel # 2 Rear cable bracket Panel # 1 DDF Panel Rear cable enclosure Rear cable cover Rear view Fig08 waterfall cabling for rear-front panels.wmf Figure 8. Waterfall Cabling for Rear/Front Cabled Panels Page 9

Instruction Sheet PANEL INSTALLATION FOR R/R PANELS ON 4-INCH (102 mm) CENTERS Panels should be installed on 4-inch (102 mm) centers as shown in Figure 9. 1. Mount the framework hardware and panels in the locations shown in Figure 9. Note: The upper and lower express troughs are used to route and manage cross-connect cords running between adjacent bays. 2. Route Network Element cabling into the bay frame from either the top or bottom (depending upon site requirements). Fig09 insatallation for 4-inch RR panels.wmf Upper Express Trough 15 14 (15) 4-Inch Panels (Typical) 13 12 11 10 9 8 7 Towel Bracket Vertical Trough 6 5 3 2 4.00" (101.60 mm) 4.00" (101.60 mm) 1 Label Holder 13.00" (330.10 mm) 13.00" (330.10 mm) Lower Express Trough Front View Rear View Figure 9. Panel Installation for R/R Panels on 4-Inch (102 mm) Centers Page 10

Issue 10, February 2004 CONNECTING R/F DDF MODULES FOR FRONT CROSS-CONNECT APPLICATION The front cross-connect configuration requires two DDF modules to complete a circuit. The module allows easy access to jumpers for circuit rearrangements during installation of new network elements and/or restorations. The circuit may be monitored in both directions of transmission. The connections at the module and a functional schematic of the application are shown in Figure 10. Monitor N.E. #1 (Transmit) N.E. #2 (Receive) N.E. #1 (Receive) N.E. #2 (Transmit) Fig10 connecting RF DDF module.wmf N.E. #1 DDF-DM Monitor Transmit (N.E. #1) Receive (N.E. #1) N.E. #2 Monitor Jumpers DDF-DM Transmit (N.E. #2) Receive (N.E. #2) Figure 10. Connecting R/F DDF Module for Front Cross-Connect Application Page 11

Instruction Sheet CONNECTING R/F DDF MODULE FOR INTERCONNECT APPLICATION The interconnect application requires one Dual Monitor module to complete a circuit. This configuration is as flexible as the cross-connect application. The circuit may be monitored in both directions of transmission. The connections at the module and a functional schematic of the application are shown in Figure 11 for the Rear/ Front cabled module. Monitor N.E. #1 (Transmit) Test cord (Push-on type) N.E. #2 (Receive) N.E. #1 (Receive) N.E. #2 (Transmit) Fig11 DDF module for interconnect.wmf N.E. #1 DDF-DM Monitor (Out) Monitor (In) N.E. #2 Dual monitor Figure 11. Connecting R/F DDF Module for Interconnect Application Page 12

Issue 10, February 2004 CONNECTING R/F DDF MODULES FOR REAR CROSS-CONNECT APPLICATION The rear cross-connect configuration requires two DDF modules to complete a circuit. The module allows easy access to jumpers for circuit rearrangements during installation of new network elements and/or restorations. The circuit may be monitored in both directions of transmission. The connections at the module and a functional schematic of the application are shown in Figure 12. N.E. #2 (Receive) N.E. #2 (Transmit) N.E. #1 (Transmit) N.E. #1 (Receive) Fig12 DDF module for rear cross-connect.wmf Rear/Rear DDF-DM Monitor N.E. #1 (Receive) Jumpers N.E. #1 N.E. #1 (Transmit) Rear/Rear DDF-DM Monitor N.E. #2 (Transmit) N.E. #2 (Receive) N.E. #2 Figure 12. Connecting R/F DDF Module for Rear Cross-Connect Application Page 13

Instruction Sheet CONNECTING R/R DDF MODULE FOR INTERCONNECT APPLICATION The interconnect application requires one Dual Monitor module to complete a circuit. This configuration is as flexible as the cross-connect application. The circuit may be monitored in both directions of transmission. The connections at the module and a functional schematic of the application are shown in Figure 13 for the Rear/ Front cabled module. N.E. #2 (Receive) N.E. #2 (Transmit) N.E. #1 (Transmit) N.E. #1 (Receive) Fig13 RR DDF module for interconnect.wmf Rear/Rear DDF-DM N.E. #2 Monitor N.E. #1 Rear/Rear dual monitor Figure 13. Connecting R/R DDF Module for Interconnect Application Page 14

Issue 10, February 2004 INSTALLING AND REMOVING THE DDF MODULE Installing DDF Module in Panel 1. Position the module at an angle to the panel so that the bottom of the module is close to the tab molded into panel. Place bottom of module onto tab, as shown in Figure 14. 2. With the bottom of the module on the tab, swing the module up until it contacts the panel and continue pushing until it locks into place. The module is now ready to attach patch cords. Removing DDF Module From Panel 1. Swing the panel forward to allow access to the rear of module (Rear/Front panels only). 2. Using a flat screwdriver or other blunt tool, press the latch at the top of the module. 3. Swing the module down and lift it out of panel. Fig14 installing and removing DDF module.wmf Push module forward until it snaps in place Latch on module Swing panel forward to gain access to rear of module Press latch on module Position module at an angle on tab Tab in panel Swing module down and lift out Installing DDF module Removing DDF module Figure 14. Installing and Removing the DDF Module Page 15

Instruction Sheet PATCH AND TEST CORDS There are four types of cords used with the DDF: Single push-on BNC BNC test cord Locking U-link BNC BNC patch cord Single BNC BNC patch cord Duplex BNC BNC patch cord The duplex BNC BNC patch cords are constructed with one white coaxial cable and one blue coaxial cable encased in a white outer jacket. The different colored coaxial cables allow easy identification of Transmit and Receive and help to maintain circuit integrity from one panel to another. The patch cords and test cords are shown in Figure 15. Strain relief Push-on BNC Length Single Push-On BNC-BNC Test Cord Strain relief Locking BNC 100 mm Locking U-Link Cord Strain relief Locking BNC Length Single BNC-BNC Patch Cord Blue coaxial cable White outer jacket Locking BNC Strain relief White coaxial cable Length Duple/BNC-BNC Patch Cord Fig15 patch and test cords.wmf Figure 15. Patch and Test Cords Page 16