Global Specialties ARX-WRL, Инструкция по эксплуатации

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7. Background Information
7.1 APC220
Communication between the PC and Asuro may be accomplished by
a APC220 radio data module, which is a transceiver from Appcon
Technologies.
A transceiver is a combination of a transmitter and a receiver in a
single chip, which allows us to transmit and receive signals by using
only one singular device.
The transceiver has been equipped with a UART-interface, which
enables the module to communicate with a PC or a micro-controller.
The module’s energy consumption is low (+/- 30mA) and installation
is rather simple. These features are the basic reasons to choose the
module for wireless communictions.
The communication range at a baud-rate of 9600 bps is specified at
a maximum of 250m and at 1200 bps at 1200 meters. These speci -
fications may be found in the data-sheet.
In a previous project (Wild Thumper) the same APC220-module
was
implemented and extensively tested. In these tests a 200m-
range for reliable communications
was
confirmed.
The disadvantage for this receiver is the missing proprietary protocol
for transmitting data. Therefore we will have to define this protocol
for transmitting data.
Fig. 20 : RF Communication
Fig. 19 : APC-220