Installation Manual

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Channelized Amplifier Installation Instruction

1. INTRODUCTION

This document provides installation instructions for the Midway Airport Air Interface System

(MAAIS). This system shall be used as an air interface for the new Midway Airport Terminal

Development Program, Passive Radio Support System.

2. EQUIPMENT

2.1 Channelize Amplifier Racks

The engineers/technicians must read the RF Radiation Hazard section before they proceed any

installation work. Install both channelize amplifier racks in the MDF room of area 10–153. Each

equipment rack has been pre-assembled the internal cabling among all the modules and there are

four interconnect RF cables between these two racks and Figure 1, 2, 3 and 4 have indicated. The

interconnections are listed in the following:

a. The first cable is from the bottom of rack #1’s combiner (VHF Downlink Port) to

rack #2’s VHF D/L Combiner (Downlink Port).

b. The second cable is from the bottom of rack #1’s combiner (VHF Uplink Port) to

rack #2’s VHF U/L Splitter (Uplink Port).

c. The third cable is from the rack #1’s UHF Duplexer/CBC (Downlink Port) to rack

#2’s UHF D/L Combiner (Downlink Port).

d. The fourth cable is from rack #1’s UHF Duplexer/CBC (Uplink Port) to rack #2’s

UHF U/L Splitter (Uplink Port).

The bottom floor panel of raise floor beneath the rack will need to be removed for routing the six

(6) antenna feeder cables. The cable connecting ports are shown in Figure 1, 2, 3 and 4. The

cable connections between the antenna and equipment racks are listed in the following:

a. The UHF 1 antenna’s downlink cable will connect between the UHF 1 D/L outdoor

antenna and rack #1’s UHF D/L Splitter.

b. The UHF 1 antenna’s uplink cable will connect between the UHF 1 U/L outdoor

antenna and rack #1’s UHF U/L Combiner.

c. The UHF 2 antenna’s downlink cable will connect between the UHF 2 D/L outdoor

antenna and rack #2’s UHF D/L Splitter.

d. The UHF 2 antenna’s uplink cable will connect between the UHF 2 U/L outdoor

antenna and rack #2’s UHF U/L Combiner.

e. The VHF antenna’s downlink cable will connect between the VHF D/L outdoor

antenna and rack #2’s VHF D/L splitter.

Summary of content (7 pages)

PAGE 1
Channelized Amplifier Installation Instruction 1. INTRODUCTION This document provides installation instructions for the Midway Airport Air Interface System (MAAIS). This system shall be used as an air interface for the new Midway Airport Terminal Development Program, Passive Radio Support System. 2. EQUIPMENT 2.1 Channelize Amplifier Racks The engineers/technicians must read the RF Radiation Hazard section before they proceed any installation work.
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f. The VHF antenna’s uplink cable will connect between the VHF U/L outdoor antenna and rack #2’s VHF U/L Combiner. The existing passive combiners currently in place shall be relocated into the channelize amplifier equipment rack so all cable feeding these units shall also be relocated to the new equipment rack. Note, there will not be access to the equipment rack from above so all cable will need to enter the rack from below. 2.
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Where the equipment is used near power lines, or in association with temporary masts not having lightning protection, the use of a safety earth connected to the case-earthing bolt is strongly advised.
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3 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 UHF U/L COMBINER 50-030510 UHF D/L SPLITTER 50-030507 UHF DUPLEX CM 50-030512 UHF DUPLEX CM 50-030512 UHF DUPLEX CM 50-030512 UHF DUPLEX CM 50-030512 UHF DUPLEX CM 50-030512 UHF DUPLEX CM 50-030512 UHF D/L COMBINER 50-030508 UHF U/L SPLITTER 50-030511 UHF DUPLEXER/CBC 50-030509 UHF DUPLEXER/CBC 50-030509 Figure 1 – Rack #1 Layout M 479.2-480.8MHz L 476.2-477.8MHz K 476.
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43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 UHF U/L COMBINER 50-030510 UHF D/L SPLITTER 50-030507 UHF DUPLEX CM 50-030512 UHF DUPLEX CM 50-030512 UHF DUPLEX CM 50-030512 UHF DUPLEX CM 50-030512 UHF DUPLEX CM 50-030512 UHF D/L COMBINER 50-030508 UHF U/L SPLITTER 50-030511 VHF D/L SPLITTER 50-030502 VHF U/L COMBINER 50-030503 VHF SIMPLEX CM 50-030506 VHF SIMPLEX CM 50-030506 VHF DUPLEX CM 50-030505 VHF DUPLEX CM 50-030505 VH
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UHF1 U/L UHF1 D/L 1/2" jumper 7/8" Cable 1/2" jumper Grounding Bar 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 D/L U2 U/L U2 VHF D/L VHF U/L DN LCX UP LCX Figure 3 – Cable Connection for Rack # 2
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Outdoor Antennas UHF2 U/L UHF2 D/L VHF D/L 1/2" jumper 1/2" jumper 7/8" Cable 7/8" Cable Grounding Bar 1/2" jumper 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 1/2" jumper V U/L V D/L VHF U/L U1 U1 U/L D/L Figure 4 – Cable Connection for Rack # 2