User's Manual

SMR 700 800 HIGH POWER PS NFPA CLASS A SIGNAL BOOSTER
PRODUCT DESCRIPTION AND USER’S MANUAL
Cobham Wireless – Coverage
Date: 22-Dec-16
www.cobham.com/wireless
Doc. No.00068CDUM Rev. 2.3 Page | 7
2.2.2 Enabling Monitoring of Service Antennas
For both indoor and outdoor service antennas:
The Booster supports monitoring of DC Service antennas. This requires a DC path through the transmission
line (and lightning protector) to the Service antennas. If the LAST Service antenna doesn’t provide a DC
return path, install a 1dB attenuator as illustrated in Figure
2-1.
NOTE: It is required to install a
single 1dB attenuator on the last service antenna (or on one of the last
service antennas if a splitter is used). If used on an antenna installed outdoors, be sure provide suitable
weatherproofing over attenuator and connectors or fit inside building.
Figure 2-2. Antenna Connections
2.2.3 Indoor Installations
2.2.3.1 Recommended Antennas
The following describes the requirements for an omni-directional mobile used for indoor applications.
Specifications:
• One or a combination of the following antennas can be used: Ceiling Mount Patch antenna, Wall Mount
Patch antenna, Corner Reflector.
• Omni directional antenna with a 0 to 2 dBi typical gain, or wide beam with up to 10 dBi gain.
• Example of omni-directional antenna specifications:
Gain: 0 to 2 dBi
VSWR: < 2:1
Impedance: 50 ohm
• Choose an antenna with high side lobe attenuation that allows maximum isolation from the service/
mobile antenna.
• A minimum of 5 such antennas must be connected to the Signal Booster with cables and splitters.
• The maximum EIRP from each antenna shall not exceed 3W.