User manual

User Manual
man_905K_1.10.doc Page 23
3 HARDWARE INSTALLATION
WARNING! 110/220/240V mains power must NOT be connected to any input terminal
of the 905K module!
The 905K module is housed in a weatherproof enclosure with external power and input signals
connected via a weatherproof connector at the bottom of the module.
Wires of up to 0.75 sqmm may be connected by soldering to the female connector supplied with
the unit. The antenna/coaxial cable connector is a SMA female at the top of the module. Care
should be taken to ensure that this connection remains weatherproof, as the ingress of water will
decrease radio performance. Wrap both the antenna connection and input signal connector with
weatherproofing tape.
Before installing a new system, it is preferable to bench test the complete system as
configuration problems are easier to recognise when the system units are close together.
Following installation, poor communications can be caused by:
• Incorrectly installed antennas
• Radio interference on the same channel
• Obstructions in the radio path
• Radio path too long
If the radio path is a problem, higher performance antennas or a higher mounting point for the
antenna may help. Alternately, use a 905U module as a repeater.
The foldout sheet 905K Installation Guide is included with the product, with more detailed
information in the following sections: