User's Manual

SMR 700 800 HIGH POWER PS NFPA CLASS B SIGNAL BOOSTER
PRODUCT DESCRIPTION AND USER’S MANUAL
Cobham Wireless – Coverage
Date: 23-Nov-16
www.cobham.com/wireless
Doc. No.00060CDUM Rev. 3.4 Page | 9
2.4 Selecting the Booster Location
When selecting a location, verify the requirements described in this section are met.
2.4.1 Installation Location Criteria and Environment
WARNING!! The signal booster must always be installed vertically with the connectors on the underside for
protection (see 3.3.2.2). Horizontal installation on a bench for long time may cause damage to the signal booster due to
over-heating.
The following criteria should be considered when selecting the Booster site:
• Application type – indoor or outdoor.
• CMRS service - can only be operated indoors.
• BTS location - distance from antenna site and BTS antenna height.
It is recommended that the installation location be as close as possible to the antenna site in order to
maintain the cable loss to a minimum.
• Accessibility - general surroundings and accessibility of location
• Mounting surface – use a suitable mounting surface, such as a flat back rigid wall.
• Plan connection cable clearances - the connections located on the underside of the unit will need at
least 300mm vertical clearance below the unit to enable the connections to be made. The minimum
bend radius for RF cables must not be less than the recommendations made by the cable manufacturer.
Plan the cable runs and ensure adequate space is available.
• Allow for door opening - ensure that there is sufficient space at the front of the unit to allow the door
to be fully opened and for maintenance engineers to get access to the unit with test equipment such as
a spectrum analyzer. Allow an additional 500mm of space in front of the unit when the door is fully
open.
• Allow for heat dispersion - Mount the repeater so that heat can be dispersed from it.
The repeater wall mounting kit ensures an optimum airflow between the wall and the repeater.) Do not
block this air channel as it will cause the MTBF of the repeater to drop dramatically, or even in the worst
case cause the repeater to fail completely.
In outdoor applications it is recommended to install a cabinet or a shielding sunroof for further
protection against weather wear. If possible, use a wall in the shade to minimize the overall sun loading.
If sufficient shielding cannot be obtained, an additional sun shield should be mounted.
Figure 2-5: Example of a sun shield