User Manual

Installation
RFI-9256 Radio Modem User Manual Page 6 of 96
2. Installation
2.1 Radio Frequency Hazard Information
The product described in this manual has been tested to comply with Maximum Permissible Exposure
(MPE) limits.
When operated with the supplied antenna and at maximum transmit power
1
, the antenna should not be
located within 20cm of where people may come in contact.
Antennas of this transmitter must not be co-located or operating in conjunction with any other antenna or
transmitter.
2.2 RFI-9256 Location
There are a number of rules to observe when installing your RFI-9256.
 Placement of the RFI-9256 unit is likely to have a significant impact on its performance. The
higher the placement of the antenna, the better the communication link.
 Antennas should be placed away from walls and poles as these will affect the radiated pattern and
VSWR.
 Antennas in close proximity are potential sources of mutual interference. It is possible that slight
adjustments in antenna placement (as little as 1 meter in either vertically or horizontally) may
solve interference problems.
 The radio should be placed away from computers, telephones, answering machines and other
similar equipment.
 Long RS-232 cable runs (greater than 10 meters) should be avoided in areas with frequent
lightning activity or static electricity build-up. Nearby lightning strikes or elevated levels of static
electricity may lead to voltage spikes on the RS-232 circuits with potential failure of the interface.
RF Innovations supplies a range of external data interface converters for applications requiring
long cable runs.
2.3 Antenna Installation
Use extreme caution when installing antennas and follow all instructions provided.
Any antennas placed outdoors must be properly grounded. The use of external antennas subjects the
transceiver to greater exposure to direct lightning strikes.
RF Innovations recommends use of lightning surge arrestors to protect all antennas and attached equipment
against lighting strike.
1
Transmit power set to 1W (+30dBm) and antenna gain 3dBd (5.15dBi).