Manuali utente per ADC Telecommunications Inc. SP0700LH

Sommario

• 6.8.1 Optical Connections Without WDM System

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  • Use the following procedure to connect the optical fibers when there is no WDM installed with the HU:

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    • 1. Obtain two patch cords that are of sufficient length to reach from the HU to the fiber distribution panel.

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    • 2. Designate one of the patch cords as the forward path link and the other as the reverse path link and attach an identification label or tag next to the connector.

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    • 3. Remove the dust caps from the HU SeRF SFP optical ports and from the patch cord connectors that will be connected to the SeRF SFP optical ports.

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    • 4. Clean each patch cord connector following the patch cord supplier’s recommendations.

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    • 5. Insert each patch cord connector into the appropriate optical port as shown in Figure 13 and as specified by the following:

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    • PORT 1 FWD - Forward path patch cord

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      • 6. Route the patch cords from the HU to the fiber distribution panel.

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      • 7. At the fiber distribution panel, identify the OSP cable optical fiber terminations that correspond to the forward and reverse paths.

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      • 8. Remove the dust caps from the OSP cable optical fiber adapters and from the patch cord connectors.

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      • 9. Clean each patch cord connector (follow patch cord supplier’s recommendations) and then mate the connector with the appropriate OSP cable adapter.

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        • Figure 13. Fiber Optic Cable Connections To Host Unit

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      • 10. Repeat this procedure for the remaining SeRF SFPs in the HU.

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      • 11. Store any excess patch cord slack at the fiber distribution panel or storage panel.

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  • 6.8.2 Optical Connections For Systems With a WDM

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    • Use the following procedure to connect the optical fibers when a WDM module is installed with the HU:

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      • 1. Obtain a patch cord that is of sufficient length to reach from the WDM module to the fiber distribution panel.

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      • 2. Remove the dust cap from WDM Port or Port 4 on the WDM module and from the patch cord connector that will be connected to the WDM module.

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        • Figure 14. Fiber Optic Connections To WDM Module

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      • 3. Clean the patch cord connector (follow patch cord supplier’s recommendations).

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      • 4. Insert the connector into the WDM module optical WDM port (port 4).

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      • 5. Route the patch cord from the WDM to the fiber distribution panel or storage panel.

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      • 6. Identify the OSP cable optical fiber termination that corresponds to the RU.

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      • 7. Remove the dust cap from the OSP cable optical adapter and from the patch cord connector.

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      • 8. Clean the patch cord connector (follow patch cord supplier’s recommendations) and then mate the connector with the appropriate OSP cable adapter.

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      • 9. Store any excess patch cord slack at the fiber distribution panel.

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      • 10. Obtain two patch cords that are of sufficient length to reach from the WDM module to the HU.

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      • 11. Designate one of the patch cords as the forward path link and the other as the reverse path link and attach an identification label or tag next to the connector.

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      • 12. Remove the dust caps from the HU SeRF SFP optical ports and from the patch cord connectors that will be connected to the SeRF SFP optical ports.

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      • 13. Clean each pigtail connector (follow the procedures provided with the WDM module) and then insert the connector into the appropriate optical port on the HU as shown in Figure 13 and as diagramed in Figure 14.

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• 6.9 EXT REF Connections

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  • 1. Connect one end of the EXT REF interface cable (accessory) to either the IN or OUT port on HU #1 as shown in Figure 15.

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    • Figure 15. EXT REF Connections

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  • 2. Route the EXT REF interface cable to HU #2 and connect the cable’s free end to the port that is the logical opposite of the EXT REF interface connection at HU #1.

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  • 3. If a third HU will be connected to the network, connect a second EXT REF interface cable to the remaining network port on HU #2.

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  • 4. Route the second EXT REF interface cable to HU #3 and connect the cable’s free end to the port that is the logical opposite of the EXT REF interface connection at HU #2.

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  • 5. Repeat steps 3 and 4 for each additional HU that is added to the network. A diagram of typical EXT REF interface connections is shown in Figure 16.

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    • Figure 16. Configuring EXT REF Connections with Multiple Host Units

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• 6.10 Computer Connection (CRAFT)

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  • 1. Connect one end of the service interface cable (accessory) to the CRAFT port as shown in Figure 17.

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  • 2. Route the service interface cable to the computer and connect the free end of the cable to the computer’s port. Refer to the user manual provided with the computer to locate and configure the specified port.

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    • Figure 17. Craft Interface and Network Interface Connections

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• 6.11 Network Connection

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  • 1. Connect one end of the cable (accessory) to the NETWORK port as shown in Figure 17.

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  • 2. Route the cable to the computer and connect the free end of the cable to the computer’s port. Refer to the user manual provided with the computer to locate and configure the specified port.

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• 6.12 System Alarm System Connections

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  • The alarm interface between the HU and an alarm system is supported by twelve-terminal plug (with screw-type terminals) that con...

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    • 1. Obtain the required length of category 3 or 5 cable.

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    • 2. Route the cable between the HU System card and the alarm system (if not already routed) and then cut to the required length. Allow sufficient slack for dressing and organizing the cable at the HU.

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    • 3. Strip back the outer cable sheath and insulation to expose the wires at both ends of the cable and strip back 0.2 inches (5 mm) of insulation from each wire.

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    • 4. Connect the Major alarm wire pair to the MAJOR COM/NC or MAJOR COM/NO terminals (whichever is required by the alarm system) on the HU System card alarm terminal connector (supplied with HU System card) as shown in Figure 18.

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    • 5. Connect the Minor alarm wire pair to the MINOR COM/NC or MINOR COM/NO terminals (whichever is required by the alarm system) on the HU System card alarm terminal connector (see Figure 18 and Table 4).

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    • 6. Connect the Major and Minor alarm wire pairs to the appropriate terminals on the external alarm system.

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    • 7. Dress and secure cable per standard industry practice.

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    • Table 4. System Card Alarm Pin Designations

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      • Figure 18. Alarm System Connections

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• 6.13 Power Connections

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  • 6.13.1 DC Power Connections

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    • Use the following procedure to install the power wiring:

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      • 1. Obtain the items listed below:

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      • 2. Turn power switch on power supply OFF.

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      • 3. Connect the wires to the designated terminals on the fuse panel.

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      • 4. Dress and secure the wires to the rack following local practice. Route wiring away from sharp edges and secure in place to prevent chaffing and provide strain relief.

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      • 5. Route the wires to the terminal block (Figure 19) on the HU Power Supply and cut them to length, allowing sufficient length for termination.

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      • 6. Loop both power wires around and through the Ferrite as shown in Figure 19.

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      • 7. Strip 1.27 cm (0.5 inch) of insulation from the end of each wire.

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      • 8. Insert one end of each wire into the terminal block, one into + and the other into the - position.

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      • 9. The terminal block must plug into the three-pin receptacle on the front of the HU Power Supply.

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      • 10. Install fuses in the fuse panel. Update office records as required.

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      • 11. Turn power switch on power supply ON.

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      • 12. The procedure for checking the voltage level and verifying that the HU is ready to power up is provided in the applicable System Operation and Maintenance Manual (see Related Publications section).

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        • Figure 19. DC Power Connections

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• 6.14 Installation Complete

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• 7 Maintenance

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  • Figure 20. Host Unit Card Locations

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• 7.1 Host Unit Fan Replacement Procedure

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  • The HU is equipped with a fan assembly consisting of two cooling fans which is located on the left side of the HU enclosure. The...

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    • 1. Before working on the HU or handling a fan, slip on an Electro-Static Discharge (ESD) wrist strap and connect the ground wire to an earth ground source. Wear the ESD wrist strap while completing each section of the fan installation procedure.

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    • 2. Notify the NOC or alarm monitoring system operator that the fan is being replaced.

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    • 3. Loosen the two thumb screws that secure the fan/grill assembly to the front of the HU enclosure as shown in Figure 21.

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    • 4. Carefully withdraw the fan/grill assembly from the enclosure.

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    • 5. Slide the new fan assembly into the HU chassis until it is firmly seated.

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    • 6. Secure the fan/grill assembly to the front of the enclosure (see Figure 21) using the two screws loosened in Step 3.

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    • 7. Verify that the fans run properly following power-up.

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    • 8. Notify the NOC or alarm monitoring system operator that the fans are back in operation.

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      • Figure 21. Host Unit Fan Assembly Removal

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• 7.2 Power Supply Replacement Procedure

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  • 1. Before working on the HU or handling a power supply, slip on an Electro-Static Discharge (ESD) wrist strap and connect the ground wire to an earth ground source. Wear the ESD wrist strap while completing each section of the fan installation procedure.

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  • 2. Turn power switch to the OFF position.

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  • 3. Unplug power plug by applying pressure to the left and right side of the connector and pulling it straight out.

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  • 4. Loosen the two thumb screws that secure the Power Supply to the front of the HU enclosure. See Figure 22.

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  • 5. Carefully withdraw the Power Supply from the enclosure.

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  • 6. Slide replacement Power Supply into the HU chassis until it is firmly seated.

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  • 7. Secure the Power Supply to the front of the enclosure using the two thumb screws loosened in Step 4.

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  • 8. Plug power plug into the power connector on the front of the Power Supply. Make certain that it is fully seated.

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    • Figure 22. Power Supply Replacement

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  • 9. Turn power switch to the ON position.

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  • 10. Notify the NOC or alarm monitoring system operator that the system is back in operation.

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• 7.3 System Card Replacement Procedure

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  • 1. Before working on the HU or handling a System Card, slip on an Electro-Static Discharge (ESD) wrist strap and connect the ground wire to an earth ground source. Wear the ESD wrist strap while completing each section of the fan installation procedure.

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  • 2. Notify the NOC or alarm monitoring system operator that the System Card is being replaced.

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  • 3. If used, disconnect EXT REF cables from the front of the System Card.

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  • 4. Remove alarm plug from the front of the System Card by pressing on the lock tabs.

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  • 5. Loosen the two thumb screws that secure the System Card to the front of the HU enclosure. See Figure 23.

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  • 6. Carefully withdraw the System Card from the enclosure.

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  • 7. Slide replacement System Card into the HU chassis until it is firmly seated.

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  • 8. Secure the System Card to the front of the enclosure using the two thumb screws loosened in Step 5.

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  • 9. If used, connect EXT REF cables to the front of the System Card.

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  • 10. Plug alarm plug into the connector on the System Card.

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  • 11. On the Power Supply turn the power switch OFF and then back ON to reset the System Card.

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  • 12. Notify the NOC or alarm monitoring system operator that the system is back in operation.

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    • Figure 23. System Card Replacement

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• 7.4 SeRF Card Replacement Procedure

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  • 1. Before working on the HU or handling a SeRF Card, slip on an Electro-Static Discharge (ESD) wrist strap and connect the ground wire to an earth ground source. Wear the ESD wrist strap while completing each section of the fan installation procedure.

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  • 2. Remove Network and Craft RJ-45 plugs from the front of the SeRF Card.

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  • 3. Remove fiber pigtails from the SFP’s. Note the location of the pigtails.

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  • 4. Loosen the two thumb screws that secure the System Card to the front of the HU enclosure. See Figure 24.

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    • Figure 24. SeRF Card Replacement

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  • 5. Use the two handles to carefully withdraw the SeRF Card from the enclosure.

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  • 6. Slide replacement SeRF Card into the HU chassis until it is firmly seated.

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  • 7. Secure the SeRF Card to the front of the enclosure using the two thumb screws loosened in Step 4.

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  • 8. If necessary install new SFP’s or remove them from the SeRF card removed in Step 5 and install them in the new SeRF Card.

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  • 9. Plug fiber pigtails back into the SFP’s.

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  • 10. Plug Network and Craft RJ-45 plugs into the connector on the SeRF Card. Make certain the pigtails are inserted in the correct SFP.

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  • 11. Notify the NOC or alarm monitoring system operator that the system is back in operation.

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• 7.5 DART Card Replacement/Installation Procedure

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  • 7.5.1 Replacement

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    • 1. Before working on the HU or handling a DART Card, slip on an Electro-Static Discharge (ESD) wrist strap and connect the ground wire to an earth ground source. Wear the ESD wrist strap while completing each section of the fan installation procedure.

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    • 2. Notify the NOC or alarm monitoring system operator that the DART Card is being replaced.

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    • 3. Disconnect REF IN and OUT cables from the front of the DART Card.

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    • 4. Loosen the two thumb screws that secure the DART Card to the front of the HU enclosure.

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    • 5. Carefully withdraw the DART Card from the enclosure.

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    • 6. Slide replacement DART Card into the HU chassis until it is firmly seated.

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    • 7. Secure the DART Card to the front of the enclosure using the two thumb screws loosened in Step 4.

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    • 8. Connect REF IN and OUT cables to the front of the DART Card.

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    • 9. Notify the NOC or alarm monitoring system operator that the system is back in operation.

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      • Figure 25. DART Card Replacement/Installation

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  • 7.5.2 Install New DART Card

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    • 1. Before working on the HU or handling a DART Card, slip on an Electro-Static Discharge (ESD) wrist strap and connect the ground wire to an earth ground source. Wear the ESD wrist strap while completing each section of the fan installation procedure.

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    • 2. Notify the NOC or alarm monitoring system operator that another DART Card is being added the HU.

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    • 3. Determine slot location of the new DART Card. Remove blank panel from the front of the HU.

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    • 4. Slide DART Card into the HU chassis until it is firmly seated.

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    • 5. Secure the DART Card to the front of the enclosure using the two thumb screws.

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    • 6. Obtain the required lengths of high performance, flexible, low loss 50-ohm coaxial communications cable (RG-400 or equivalent) for all coaxial connections.

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    • 7. Route the forward and reverse path coaxial cables between the HU and the BTS interface (per system design plan) and cut to th...

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    • 8. Terminate each cable with an QMA-type male connector following the connector supplier’s recommendations.

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    • 9. If required, install an external attenuator in the forward path.

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    • 10. Connect the forward path cable to the FWD RF IN connector on the HU DART front panel as shown in Figure 12.

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    • 11. Connect the reverse path cable to the REV RF OUT connector on the HU DART front panel (see Figure 12).

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    • 12. Dress and secure cables at the right side of the HU.

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    • 13. Complete all remaining coaxial connections as specified in the system design plan.

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    • 14. Notify the NOC or alarm monitoring system operator that the DART Card is in operation.

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• 8 Customer Information and Assistance

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