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PRX4SERL Four-Zone Receiver Decoder
Overview
PRX4SERL
:
Up to four capcode ranges (either alphanumeric or numeric) can be used to latch four
corresponding relays and their respective front panel LEDs. The relays can be globally reset either using a
preset over the air capcode or by depressing the Reset switch. Optional software is available which only
latches the relays for 3 seconds (for 1200 baud TX systems only). Ask our technical sales team for further
details. The PRX4SERL has the added facility of an RS232 serial port, providing a data logging function
(text only). The unit can optionally be configured to send Scope protocol for onward transmission (using a
Scope transmitter on a different frequency).
Power input for both units is 12V dc @ 0.5A, via the blue latching connector provided.
Section 1: Installation
Certain precautions in sighting of the unit apply. As with all radio equipment, attention must be given to
the aerial selected and where the unit is mounted in relation to the transmitter being monitored. If the
unit is to be used with a second transmitter, it should be sited as centrally as possible within the secondary
area to be covered, although it must of course be within adequate distance of the originating transmitter.
The unit should be at least two meters away from any transmitter.
It is therefore essential that adequate signal reception is checked before fitting the unit in the desired
location. Using a Yaesu VR-120D Communications Receiver programmed to the required frequency, a
signal strength of 5 or greater is deemed to be sufficient to provide a reliable consistent link. Readings
below this level may lead to poor reception in adverse atmospheric conditions.
Ranges of up to 1 mile can be achieved, except where signal paths are severely obstructed due to reflections
or physical obstacles in the way. Such conditions may be experienced where there are a large number of
metallic structures around the site, or where the receiver is sited in a hollow, i.e. below the level of the
transmitter or its aerial.
