User Manual

MM-018965-001
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• Ensure that any future building construction or tree growth will not obstruct the radio path.
• Ensure there is sufficient clearance around the Fresnel Zone so there is minimal interference from
obstacles along the radio propagation path.
• Ensure the installation adheres to any local and national building codes and permits.
• Ensure sufficient electrical power is available at the installation site.
• When using directional antennas, align the antenna to maximize the Received Signal Strength
Indication (RSSI) from the base station.
• Ensure the area around an omnidirectional antenna is clear (at least 30 inches) so as not to distort
the RF pattern.
• Locate the client away from any sources of interference that could degrade the performance of the
equipment. Consult the RF Planning Guide, MM-015601-001 for additional information.
• Ensure the base station and clients are within each other’s maximum RF coverage range.
• Ensure maximum standard Cat-5 cable length connecting the client to the Ethernet LAN is 100
meters (328 ft.).
5.3 ELECTRICAL POWER
The input voltage source required depends on the model being installed. For example, clients use either
11 to 30 Vdc or 24 Vac +/- 10%.
The VM-WM4900-CL001 client supports power over Ethernet (IEEE 802.3-2005 compliant).
Careful consideration should be given regarding the voltage drop across the selected power cabling to
maintain the input power requirements. If a backup power source is desired, it must be provided by an
external backup power source.
DC Power Source Options
We recommend using power supplies that are FCC Part 15 Class A or B compliant. Using power
supplies that are not compliant could be in violation of FCC Regulations. It is the installer’s
responsibility to ensure the installation meets FCC Regulations.
5.4 SITE GROUNDING
Installers should review the recommended grounding procedures in the Site Grounding and Lightning
Protection Guidelines Manual, AE/LZT 123 4618/1 and ensure a suitable ground is installed between the
station ground lug and earth ground. Grounding must also be in compliance with any local and national
electrical codes.