R5
SUPREME Secure W-AIS System
INSTALLATION CONSIDERATIONS
7000 118-524, C1
Page 50
6.2.2
Mode Switch Cables
The optional contacted cables (7000 100-961 and 7000 100-962) have the
following colour coding.
Color
Description
Brown
RS422 Tx B
Red
RS422 Tx A
Orange
RS422 Rx B
Yellow
RS422 Rx A
Green
RS422 GND
Blue
Power
– (GND)
Purple
Power + (8
– 28 VDC)
Grey
NC
6.3
Installing a device to the TX Pulse Output Signal
A device that shall react on a transmission from the R5 SUPREME W-AIS transponder
shall be connected to
the “General I/O 0 – Out signal” on pin 20 in the 26-pole I/O port of
the R5 SUPREME transponder. In the R5 AIS Junction Box this signal is located on
terminal “P10” (GPIO OUT) and labeled “GPIO OUT 0”). The discrete tx pulse output
signal will be active during transmission, including configured prior offset and trailing offset
time periods as described in section 3.4. It is also configurable if the pulse should be
active low or active high. The tx pulse output signal has the following characteristics:
High-level output voltage
(shall be interpreted as logical “1”)
Min 2.48 V
Max 3.38 V
Low-level output voltage
(shall be interpreted as logical “0”)
Max 0.5 V
Maximum Output Current
4 mA
If the connected device requires a higher switching current than 4mA, an external
optocoupler or similar should be installed to the R5 SUPREME transponder tx pulse
signal. An example circuit where a LED is connected to the tx pulse output signal via an
optocoupler is shown below.
