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After site planning has been completed, use the information in this section to determine exactly what equipment and accessories you need to order.
Figure A-1 shows all major components and accessories needed to install your broadband fixed wireless system. Refer to this diagram to determine which items are required for your installation. Some of the items are included with the major components and some must be ordered from Cisco or a third-party vendor.
These are basic configuration facts that should be taken into consideration when determining the equipment to order:
Cisco provides the accessories described in this section to help in the installation of your wireless broadband router system. These items can be found in the equipment and accessory cartons.
This kit contains brackets for installing the power feed panel in a 19-inch rack or attaching it to a wall. It contains the fasteners necessary for attaching the brackets to the unit. Instructions for attaching these brackets and installing the power feed panel can be found in the Cisco uBR7200 Series Wireless Modem Card and Subsystem Installation and Configuration document.
This terminal block is used to wire the DC power supply to the power feed panel, and is inserted into a receptacle in the rear panel of the power feed panel. Instructions for wiring the DC power can be found in the Cisco uBR7200 Series Wireless Modem Card and Subsystem Installation and Configuration document.
Ground lug kits are provided for both the power feed panel chassis and Cisco's wireless transverter. Instructions for using the ground lug kits can be found in the Cisco uBR7200 Series Wireless Modem Card and Subsystem Installation and Configuration document.
This connector is used to attach the control cable to the wireless transverter. Instructions for wiring this connector can be found in the Cisco uBR7200 Series Wireless Modem Card and Subsystem Installation and Configuration document.
This kit contains the hardware necessary to mount the wireless transverter on an antenna mast. Instructions for installing the brackets and the wireless transverter can be found in the Cisco uBR7200 Series Wireless Modem Card and Subsystem Installation and Configuration document.
The following additional items are required to install your wireless broadband router system. For each type of accessory, required or suggested types are listed.
Use coaxial cables for the IF cable connections, the RF cable, and the monitor cable. If your installation includes 10-MHz clock, use a coaxial cable for this connection also.
The IF coaxial cables connecting the power feed panel to the transverter must be large enough to carry 12A short-circuit current at -48 VDC on the inner and outer conductors, as requred by local and national electrical codes.
DC resistance (sum of center conductor and outer conductor): 1.6 ohms maximum
RF loss at 420 MHz (the receive IF): 12 dB maximum
RF loss at 324 MHz (the transmit IF): 12 dB maximum
Table A-1 lists some of the coaxial cabling options with the maximum distance to the wireless transverter for each option.
| Type | Center Conductor Size (in. diam.) | Total Resistance (Ohms/1000 ft) | Attenuation at 420 MHz (dB/1000 ft) | Attenuation at 324 MHz (dB/1000 ft) | Cisco Pt.-Pt. Installation Max. Cable Length (ft)* |
|---|---|---|---|---|---|
Times Microwave LMR-400 | 0.108 | 3.04 | 26 | 23 | 420 |
Times Microwave LMR-500 | 0.142 | 2.08 | 21 | 18 | 520 |
Times Microwave LMR-600 | 0.176 | 1.73 | 17 | 14 | 640 |
Times Microwave LMR-900 | n/a | 1.09 | 11 | 10 | 1000 |
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Andrew 3/8-in. Heliax, | 0.110 | 2.81 | 26 | 22 | 420 |
Andrew 1/2-in. Heliax, | 0.142 | 1.82 | 22 | 19 | 500 |
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Andrew 1/4-in. Heliax, | 0.102 | 2.59 | 25 | 22 | 440 |
Andrew 3/8-in. Heliax, | 0.122 | 1.93 | 22 | 19 | 500 |
Andrew 1/2-in. Heliax, | 0.189 | 1.03 | 15 | 13 | 730 |
Andrew 7/8-in. Heliax, | 0.355 | 0.64 | 8 | 7 | 1000 |
Use the following connectors for coaxial cable:
Cisco strongly recommends that you use some type of cable-connection weatherproofing on all outdoor RF and IF cable connections to protect them against long-term degradation from weather effects. This is typically done by applying a suitable seal to the N-type connectors after they have been connected and verified. Do not use common electrical tape or similar types of tape because the resulting seal is not adequate, these types of tape do not withstand sunlight well, and they leave a gummy residue when removal becomes necessary.
There are several available products for this purpose. Some of the manufacturers/suppliers of these products are listed in Table A-2.
The control cables provide a physical connection for the RF subsystem control channel.
Use plenum rated, shielded, CAT-5, indoor cable to connect the control channel port on the wireless modem card to the power feed panel. For the connection between the power feed panel and the transverter, use weatherized, plenum rated, shielded CAT-5 cable.
Use the following connectors for the control cables:
A -48 VDC, 7A power supply is required to power each wireless transverter. If the wireless transverters are used for diversity, the power supply must be capable of delivering at least 14A at -48 VDC. The power supply must be wired to the power feed panel using 10 AWG (5.26 mm2) or larger wires, as required by local and national electrical codes.
 | Warning Connect the power supply to the power feed panel using 10 AWG (5.26 mm2) or larger wire, as required by local and national electrical codes, to eliminate the risk of a fire due to possible overheating. |
Lightning protectors should be used on both cables, coaxial and control, connecting to the wireless transverter. They should be installed both before the bulkhead and near the transverter. Refer to "Site Planning Considerations," for information regarding lightning protection.
Antenna selection depends on your application. Refer to "Site Planning Considerations," for information regarding antenna selection.
Cisco provides some of the parts and accessories for a typical wireless installation; however, many parts and accessories are obtained from other companies. The Cisco-provided parts and accessories include:
The Cisco-provided parts and accessories are normally available via standard Cisco return merchandise authorization (RMA) processes.
The non-Cisco-provided products must be obtained from other supplier(s). The replacement times for the non-Cisco-provided products will depend on the RMA procedures of the other supplier(s).
Cisco recommends that you design and maintain a spares inventory based on your network availability requirements.
Table A-2 provides information on some of the manufacturers or suppliers, including their web sites, of product offerings required to install a wireless system.
| Products | Manufacturer or Supplier | Web Site |
|---|---|---|
3M Cold Shrink Weatherproofing Kit | Andrew Corporation | www.andrew.com |
10-MHz reference frequency clocks | Hewlett-Packard Company | www.hp.com |
TrueTime Inc. | www.truetime.com | |
Antennas (dish) | Andrew Corporation | www.andrew.com |
Radio Waves, Inc. | www.radiowavesinc.com | |
Antennas (semi-parabolic grid) | California Amplifier | Available from Phillips-Tech |
Conifer Corporation | www.conifercorp.com | |
Cable-connection weatherproofing | (see 3M Cold Shrink Weatherproofing Kit or Coax-Seal) | |
Coax-Seal | Universal Electronics, Inc. | (no web site) |
Coaxial cables (indoor/outdoor) | Andrew Corporation | www.andrew.com |
Times Microwave Systems | www.timesmicrowave.com | |
Coaxial cables (outdoor) | Belden Inc. | www.belden.com |
RFS Cablewave Systems | www.cablewave.com | |
Coaxial cable connectors (indoor/outdoor) | Andrew Corporation | www.andrew.com |
Times Microwave Systems | www.timesmicrowave.com | |
Coaxial cable connectors (outdoor) | Belden Inc. | www.belden.com |
RFS Cablewave Systems | www.cablewave.com | |
Control cables (indoor/outdoor) | Belden Inc. | www.belden.com |
Control cable connectors (indoor/outdoor) | Belden Inc. | www.belden.com |
Lightning protection for coaxial cables | Huber + Suhner AG | www.hubersuhner.com |
Lightning protection for control cables | ITW Linx | www.broadband-guide.com/company/itwlinx.html |
PolyPhaser Corporation | www.polyphaser.com | |
Masts | (see Tripods/masts)
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Pipe-to-pipe clamp sets | Decibel Products | www.decibelproducts.com |
Power supplies | Acopian Technical Company | www.acopian.com |
Punch block surge protectors | ITW Linx | www.broadband-guide.com/company/itwlinx.html |
PolyPhaser Corporation | www.polyphaser.com | |
RF termination devices | M/A-COM | www.macom.com |
Merrimac | www.merrimacind.com | |
Microwave Filter Company | www.microwavefilter.com | |
Mini-Circuits | www.minicircuits.com | |
Narda Microwave Group | www.nardamicrowave.com | |
Weinschel | www.weinschel.com | |
Tripods/masts (non-penetrating) | Microflect Company | www.comtowers-poles.com/main.html |
Rohn Industries, Inc. | www.rohnnet.com | |
Tower Structures | www.tower-structures.com | |
Tripods/masts (penetrating) | Microflect Company | www.broadband-guide.com/company/microfleet.html |
Posted: Mon Aug 28 17:14:14 PDT 2000
Copyright 1989-2000©Cisco Systems Inc.