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ADCP-75-158 • Preliminary Issue A • June 2003 • Section 3: Host Unit Installation

Page 3-8

5 CHASSIS GROUND CONNECTION

A stud is provided on the rear side of the chassis for connecting a grounding wire to the chassis.

Use the following procedure to connect the grounding wire to the chassis and to route the

grounding wire to an approved earth ground source.

1. Obtain a length of #18 AWG (1.00 mm) insulated stranded copper wire for use as a

chassis grounding wire.

2. Terminate one end of the wire with a ring terminal.

3. Locate the chassis ground stud at the rear of the HU as shown in Figure 3-7.

Figure 3-7. Chassis Ground Stud

4. Attach the ring end of the wire to the chassis ground stud (see Figure 3-7).

5. Route the free end of the chassis grounding wire to an approved (per local code or

practice) earth ground source.

6. Cut the chassis grounding wire to length and connect it to the approved ground source as

required by local code or practice.

6 COAXIAL CABLE CONNECTIONS

The RF interface between the HU and the BTS is supported through two N-type female

connectors mounted on the HU front panel. One connector provides the coaxial cable

connection for the forward path (downlink) signal and the other connector provides the coaxial

cable connection for the reverse path (uplink) signal.

In most installations, it is usually necessary to insert some attenuation in the forward path link

between the HU and the BTS. A signal level that is greater than –9 dBm will overdrive and

Note: Be sure to maintain reliable grounding. Pay particular attention to ground source

connections.

16169-A

FCC ID: F8I-DLC1902A

Summary of content (14 pages)

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FCC ID: F8I-DLC1902A ADCP-75-158 • Preliminary Issue A • June 2003 • Section 3: Host Unit Installation 5 CHASSIS GROUND CONNECTION A stud is provided on the rear side of the chassis for connecting a grounding wire to the chassis. Use the following procedure to connect the grounding wire to the chassis and to route the grounding wire to an approved earth ground source. 1. Obtain a length of #18 AWG (1.00 mm) insulated stranded copper wire for use as a chassis grounding wire. 2.
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ADCP-75-158 • Preliminary Issue A • June 2003 • Section 3: Host Unit Installation possibly damage the HU receiver. Refer to Section 4, Subsection 2.3, before completing the forward path connection at the BTS. If the Conditioning Panel or Duplexing Panel is required, refer to the Digivance 800 and 1900 MHz Interface Panels User Manual (ADCP-75-147) for the installation procedures. The HU should be mounted as close as possible to the BTS to minimize cable losses.
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ADCP-75-158 • Preliminary Issue A • June 2003 • Section 3: Host Unit Installation 7 OPTICAL CONNECTIONS The optical interface between the HU and the RU is supported by two optical ports. Each optical port consists of an SC optical adapter which is mounted on the HU front panel. Port 1 provides the optical fiber connection for the forward path (downlink) signal. Port 2 provides the optical fiber connection for the reverse path (uplink) signal.
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ADCP-75-158 • Preliminary Issue A • June 2003 • Section 3: Host Unit Installation PORT 1 (FORWARD PATH) PORT 2 (REVERSE PATH) 18656-A Figure 3-9. Fiber Optic Cable Connections To Host Unit 7. At the fiber distribution panel, identify the OSP optical fiber terminations that correspond to the forward and reverse path. 8. Remove the dust caps from the from the patch cord connectors. 9.
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ADCP-75-158 • Preliminary Issue A • June 2003 • Section 3: Host Unit Installation HOST UNIT 1 HOST UNIT 2 PORT 1 PORT 2 FORWARD PATH PORT 1 PORT 2 REVERSE PATH 1 HOST UNIT 1 (BI-DIRECTIONAL FIBER LINK WITH REMOTE UNIT) FORWARD PATH 2 3 4 5 6 REVERSE PATH WAVELENGTH DIVISION MULTIPLEXER HOST UNIT 2 (BI-DIRECTIONAL FIBER LINK WITH REMOTE UNIT) X OSP CABLE OPTICAL FIBERS X FIBER DISTRIBUTION PANEL (FDP) 18657-A Figure 3-10. Fiber Optic Connections To WDM Module 3.
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ADCP-75-158 • Preliminary Issue A • June 2003 • Section 3: Host Unit Installation 8 CONTROLLER AREA NETWORK CONNECTIONS Controller Area Network (CAN) interface connections between multiple HU’s are supported by a pair of RJ-45 jacks. One of the jacks is designated as the NET IN port and the other jack is designated as the NET OUT port. The CAN interface allows up to 24 HU’s to be connected together (in daisy-chain fashion) and controlled through a single Digivance EMS computer.
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ADCP-75-158 • Preliminary Issue A • June 2003 • Section 3: Host Unit Installation HOST UNIT 1 NET IN NET OUT HOST UNIT 2 NET IN NET OUT HOST UNIT 3 NET IN NET OUT 16900-B CONTROLLER AREA NETWORK INTERFACE CABLES TO NEXT HOST UNIT (NOTE: LAST HOST HAS NO CONNECTION AT NET OUT) Figure 3-12. Configuring CAN Connections with Multiple Host Units 9 EMS COMPUTER CONNECTION The service interface connection between the HU and the EMS computer is supported by a single DB-9 female connector.
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ADCP-75-158 • Preliminary Issue A • June 2003 • Section 3: Host Unit Installation 10 EXTERNAL ALARM SYSTEM CONNECTIONS The alarm interface between the HU and an external alarm system is supported by a six-terminal plug (with screw-type terminals) that connects to a receptacle mounted on the HU front panel. The terminal plug provides connections to normally open (NO) and normally closed (NC) dry type alarm contacts for both major and minor alarms.
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ADCP-75-158 • Preliminary Issue A • June 2003 • Section 3: Host Unit Installation 6. Connect the Major and Minor alarm wire pairs to the appropriate terminals on the external alarm system. 7. Dress and secure cable per standard industry practice. 11 DC POWER CONNECTIONS The HU is powered by ± 21 to ± 60 VDC power (nominal ± 24 or ± 48 VDC). The power is fed to the HU through a screw-down type terminal strip located on the rear side of the unit.
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ADCP-75-158 • Preliminary Issue A • June 2003 • Section 3: Host Unit Installation 6. Connect the power wires to the appropriate terminals as specified in the fuse panel user manual. 7. Dress and secure the power wiring at the fuse panel and the HU. The procedure for checking the voltage level and verifying that the HU is ready to power up is provided in SECTION 4: OPERATION. Page 3-17 © 2003, ADC Telecommunications, Inc.
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ADCP-75-158 • Preliminary Issue A • June 2003 • Section 3: Host Unit Installation Blank Page 3-18 © 2003, ADC Telecommunications, Inc.
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ADCP-75-158 • Preliminary Issue A • June 2003 • Section 4: Operation SECTION 4: OPERATION Content 1 2 Page BEFORE STARTING OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 1.1 Tools and Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 1.2 Readiness Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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ADCP-75-158 • Preliminary Issue A • June 2003 • Section 4: Operation 1.2 Readiness Check Before starting the turn-up process, inspect the complete Digivance system to verify that all components of the system are ready to be powered-up. This will ensure that no units of the system will be damaged during turn-up and that all existing systems will continue to function properly. 1.2.1 Host Unit Installation Checks Complete the following checks at the HU prior to starting the turn-up process: 1.
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ADCP-75-158 • Preliminary Issue A • June 2003 • Section 4: Operation 2.1 Turn-Up Procedure Each Digivance system should be turned-up separately before being networked together with multiple systems through the CAN interface. Use the following procedure to turn-up each Digivance system: 1. Temporarily disconnect the external alarm system or notify the alarm system provider that testing is in progress. 2.