Manual

14
Buoy Transceiver
Overview
The transceiver consists of the following items.
l A microprocessor that is programmed to take sensor readings at given intervals
l A radio module that transmits the sensor readings to the host computer
l A desiccant pack
In between the readings, the radio module operates in sleep mode, enabling the buoy
to operate with lower power consumption.
Figure 6.1 Transceiver interior
1 Probe power connection—red wire
2 Probe RS485 - connection—green wire
3 Probe RS485 + connection—blue wire
4 Probe return ground—black wire
5 Probe shield ground—silver wire
6 Motor power +
7 Motor power -
8 Power 9-18 volts DC+
9 Power 9-18 volts DC-
10 Transceiver addressing dip switches
11 Radio module with integrated antenna
Addressing
Each transceiver radio is programmed with a different address that identifies the buoy
when communicating with the host computer.
A switch module on the transceiver board sets the buoy address. The switch has the
following characteristics.