Install Guide

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Table Of Contents

Installing the Base Station Outdoor Unit (ODU)

Ensemble Communications Inc.

Installing the Base

Station Outdoor

Unit (ODU)

This chapter details how to install the base station Outdoor

Unit (ODU). Before beginning the process, review the

preinformation in Chapter 3.

Chapter Topics Ancillary Materials 4-2

Antenna Installation 4-6

Antenna Polarization 4-6

Azimuth Alignment 4-7

Bracket Mounting 4-3

Cable Terminations 4-8

Elevation Alignment 4-7

Ground Mast 4-3

IF Cable Installation 4-8

Lightning Suppressor Installation 4-4

ODU Components 4-2

ODU Installation 4-3

Redundant ODU Installation 4-7

Tools for Installation 4-2

Unpacking and Inventory 4-2

Summary of content (8 pages)

PAGE 1
Installing the Base Station Outdoor Unit (ODU) 4 4 This chapter details how to install the base station Outdoor Unit (ODU). Before beginning the process, review the preinformation in Chapter 3.
PAGE 2
4-2 Operator’s Guide to the Fiberless System Unpacking and Inventory • Unpack the equipment on a flat, clean surface at the installation site. • Check the items received against the packing list and a copy of the purchase order to ensure that the order is complete. • Check that the ODU has the frequency band and polarity ordered. This information is on the manufacturer label. • Inspect all components to determine that they are not damaged.
PAGE 3
Installing the Base Station Outdoor Unit (ODU) 4-3 ODU Installation Note Ground Mast Bracket Mounting Installers are responsible for supplying mounting bolts. All steel mounting structures attached to the building and the antenna mast must be connected to the building grounding system. If no grounding system or ring is available, ground the antenna mounting structures to the nearest structural beam. The grounding conductor should be at least a # 2 (AWG) solid tinned copper wire.
PAGE 4
-4 Operator’s Guide to the Fiberless System (5) Alignment Bracket (4) Mounting Rack (3) Mounting Clamps (6) Elevation Markers Vertical Alignment Bolt (2) Mounting Bolts (7) Azimuth Alignment Bolt (1) Mast Figure 4-1. Pole Mount Assembly Lightning Suppressor Installation Caution It is not possible to guarantee that lightning protection will be 100 percent effective against a direct lightning strike. Note A lightning suppressor is not shipped with the ODU.
PAGE 5
Installing the Base Station Outdoor Unit (ODU) • 4-5 Install 75 ohm TNC male connectors on each end of an 18-inch RG-6-type coax jumper cable using Ensemble-approved cable and crimp type connectors. Suppressor Grounding stud Ground strap Figure 4-2. Lightning Suppressor Assembly Ensemble Communications Inc.
PAGE 6
4-6 Operator’s Guide to the Fiberless System • Connect jumper cable to ODU (A) and suppressor “Protected” connector (B) as shown in Figure 4-3. • Connect the RG-6-type coax cable from the Fiberless indoor unit to the connector (C) on the suppressor labeled “Surge.” • Weatherize all connections. • Tie RG-6-type cables to the mast. Outdoor Unit From Indoor Unit Figure 4-3.
PAGE 7
Installing the Base Station Outdoor Unit (ODU) Azimuth Alignment 4-7 1. As needed, use a ratchet wrench and a 7/16-inch socket to loosen the azimuth alignment bolt (7 in Figure 4-1). 2. Verify the mounting bracket is aligned with the correct azimuth according to your site design plan. Note If necessary, consult an USGS geographic map to identify distinctive landmarks to get a precise bearing. 3. Point the base station ODU in the appropriate azimuth direction.
PAGE 8
4-8 Operator’s Guide to the Fiberless System IF Cable Installation Caution If the base station has been powered up, power it off before connecting or disconnecting the RG-6 cable at either end because the cable may have –48 VDC across the connector. 1. Run RG-6 coaxial cable between the base station and the ODU. The maximum permissible individual cable run length is 1,000 feet (300 meters). Ensure there is an 18-inch (45 cm) service loop at each end of the cable.