
10
CyScan Positioning System • Installation and Maintenance Guide r1.1
GCS
GCS
The Data Converter
The Data Converter is necessary to translate between the RS485 signals used by the
CyScan sensor (and the DP system) and the RS232 signals used by the notebook compu-
ter. The Data Converter is contained within a watertight enclosure, however, it is usually
mounted on the bridge near to the CyScan notebook (refer to mounting template in
Appendix 4). The Data Converter requires a DC power supply between 7 and 35V – this
can be derived either from the CyScan Power Supply Unit or from the vessel’s bridge, as
required.
2TX
2RX
1TX
1RX
PWR
Signal
TX
NC
RX
NC
RTS
GND
7-35VDC
OV
Connector
1
2
3
4
5
6
7
8
Signal
GND
NC
RXB
RXA
TXB
TXA
Connector
6
5
4
3
2
1
DIP Switch
1
2
3
4
Position
OFF
OFF
ON
OFF
CyScan Notebook &
Power Connections
Console Signals
from PSU Unit
Data Converter Signal Crossover
The RS485 connection
between the CyScan PSU
and the Data Converter
requires a crossover in order
that transmit and receive
signals are correctly routed.
Ensure that the crossover is
correctly performed as the
cable from the Data Con-
verter is wired into the PSU.
RXA
TXB
TXA
RXB
GND
RXA
TXB
TXA
RXB
GND
CyScan
PSU
Data
Converter
The Data Converter is supplied with a single cable 2 metres in length that has a 9 pin
female D-Type connector for attachment to the CyScan notebook computer’s serial port.
A second cable gland allows entry for a cable to connect with the CyScan Power Supply
Unit.
Notebook computer
The CyScan notebook computer is supplied with a battery charger and mains plug. This
should be connected when in use. A footprint of 400 x 400 mm should be allowed for
the console notebook computer. The notebook charger is typically 200 x 70 x 50mm and
will require mounting close to a mains supply.