User's Manual

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Ensemble Communications Inc.

CPE Site Setup 6

This chapter details how to install and commission the CPE

site. Before beginning the process, review the information in

“Preinstallation”, page 3-1.

Chapter Topics Antenna Alignment 6-12

Antenna Alignment Completion 6-14

Antenna Mounting 6-4

Cable Terminations 6-8

CPE Indoor Access Requirement 6-9

CPE Indoor Grounding 6-10

CPE Indoor Installation 6-9

CPE Indoor Power 6-10

CPE Indoor Procedure 6-11

CPE Indoor Temperature 6-10

CPE LEDs 6-14

CPE Software Configuration 6-14

CPE Subscriber Interface Cards (SICs) 6-14

DC Voltage Measurement 6-12

Ground Mast 6-4

Horizontal Antenna Polarization 6-7

IF Cable Installation 6-8

Indoor Equipment Components 6-2

Indoor Equipment Placement 6-9

Installation Materials 6-2

Lightning Suppressor Installation 6-5

Main Lobe Location 6-14

ODU Components 6-2

ODU Installation 6-4

Receive Signal Levels for Various Voltages 6-13

Sighting Tools 6-3

Test Equipment 6-3

Unpacking and Inventory 6-2

Vertical Antenna Polarization 6-7

Voltage Readings 6-13

Summary of content (14 pages)

PAGE 1
CPE Site Setup 6 6 This chapter details how to install and commission the CPE site. Before beginning the process, review the information in “Preinstallation”, page 3-1.
PAGE 2
6-2 Operator’s Guide to the Fiberless System Unpacking and Inventory • Unpack the Fiberless 320 CPE and CPE ODU 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 you have received your complete order. • Check that the CPE ODU has the frequency band that was ordered. This information is on the manufacturer label and should match the network plan.
PAGE 3
CPE Site Setup • RG-6 Belden 82248 for indoor plenum use • Ratchet wrench • 7/16-inch socket • 1/2-inch socket • TNC crimp connectors • Black nylon wire ties for outdoor use Note Sighting Tools Test Equipment 6-3 For a complete list of recommended ancillary equipment, see Table 3-3, “Ancillary Equipment Requirements,” on page 10.
PAGE 4
6-4 Operator’s Guide to the Fiberless System ODU Installation Note Ground Mast Antenna 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 set at least a # 2 (AWG) solid tinned copper wire.
PAGE 5
CPE Site Setup (4) Mounting Rack (3) Mounting Clamps 6-5 (5) Alignment Bracket (6) Elevation Markers (2) Mounting Bolts (7) Azimuth Alignment Bolt Vertical Alignment Bolt (1) Mast Figure 6-1. CPE Pole Mount Assembly 6. Attach the antenna to the mounting plate, orienting it for proper polarization (see the next sections) and LOS alignment with the base stations. 7. After aligning the antenna, tighten the mounting clamps.
PAGE 6
-6 Operator’s Guide to the Fiberless System Note Connect the supplied ground strap from the ODU housing to the pole mount (antenna ground points), ensuring there is contact on the pole. Suppressor Grounding stud Ground strap Figure 6-2. Lightning Suppressor Assembly Outdoor Unit To TNC IF Connector From Indoor Unit Figure 6-3. Lightning Suppressor Assembly Closeup Ensemble Communications Inc.
PAGE 7
CPE Site Setup Vertical Antenna Polarization 6-7 • For a vertical polarized antenna, mount the unit with its two cable connectors facing down and the “V” is up as shown in Figure 6-4. • Line up the bolts in the antenna with the four holes in the mounting bracket as shown in Figure 6-4. . Antenna Ground Points Drain hole BNC alignment connector TNC IF connector Drain hole Figure 6-4.
PAGE 8
6-8 Operator’s Guide to the Fiberless System IF Cable Installation WARNING The RG-6 cable may have -48 VDC across the connector when it is connected to the CPE. So if for some reason the CPE has been powered up, power it off before connecting or disconnecting the RG-6 cable at either end. Note Belden 9248 (for outdoor) or Belden 82248 (for plenum indoor) are the only approved RG-6 cable types. 1. Run RG-6 coaxial cable between the CPE and the CPE ODU.
PAGE 9
CPE Site Setup 6-9 5. Waterproof the connector using a sealing type of heat shrinkable tubing, cold shrink tubing, or 3M type 66 vinyl tape with a coating of 3M electrical coating. Note Waterproofing is not required for connectors that terminate inside. 6. At the CPE indoor equipment, install a TNC connector on each IF cable. 7. Following the system design plan, connect the cable from each antenna unit to a specific ODU connector on the CPE.
PAGE 10
6-10 Operator’s Guide to the Fiberless System CPE Indoor Temperature The location should meet these temperature allowances, including enough ventilation to dissipate heat loads of 150 Watts: 50° to 86° F (10° to 40° C) CPE Indoor Power CPE Indoor Grounding The CPE indoor unit is normally shipped for use with 120/220 VAC power. When possible, it should be plugged into a dedicated 15 Amp circuit. You may install a small PC-style UPS if desired.
PAGE 11
CPE Site Setup CPE Indoor Procedure 6-11 • Select an environment that is dirt and dust free for the CPE. • Situate the CPE box in a rack, shelf mount or on a table top. Connect the power cable to the power connector on the back of the CPE indoor equipment. WARNING The cable may have -48 VDC across the connector when connected to the CPE. Therefore, DO NOT apply power to the CPE before connecting or disconnecting the RG-6 cable at either end. Note The CPE requires a nominal of 110/220 VAC, 10 Amps.
PAGE 12
6-12 Operator’s Guide to the Fiberless System Caution If you power off the CPE, wait five seconds before turning on the power again. Antenna Alignment The following sections describe how to align the antenna. Figure 6-8 illustrates the assembly and its alignment rods. Vertical alignment rod Horizontal alignment rod Figure 6-8. Antenna Adjustments DC Voltage Measurement Ensemble Communications Inc. • Connect a BNC cable to the ODU alignment port (BNC connector) as shown in Figure 6-9.
PAGE 13
CPE Site Setup Digital Voltage Multimeter 6-13 CPE ODU (rear view) BNC Alignment Connector Figure 6-9. Digital Voltage Multimeter (DVM) Connection Note Receive Signal Levels for Various Voltages The alignment port is factory configured to provide a voltage of 0 - 5 VDC. Any received signal level (RSL) of less than 0.5 VDC is translated as 0 and the readout displays a blinking 0. Table 6-1: RSL and Voltages Rx pwr (dBm) -75 1.08 -70 1.39 -65 1.71 -60 2.04 -55 2.35 -50 2.69 -45 3.
PAGE 14
6-14 Operator’s Guide to the Fiberless System 2. Note the peak voltage variances, and sweep the antenna in the other direction. Main Lobe Location 3. Move the antenna to the strongest signal reference of the two. 4. Repeat steps 1-3 for the vertical alignment. Antenna Alignment Completion 5. When alignment is completed, disconnect the BNC cable at both the ODU BNC connector and the DVM. 6. Recap the ODU BNC connector and stow all tools. CPE Software Configuration See page 7-65.