RS485-1 RS485 to RS232
The RS485-1 is no longer in production.
The Actisense® RS485 to RS232 adapter cable (RS485-1) contains a full RS485 bi-directional, half duplex (automatic change over between receive and transmit) interface, with protection against electrostatic discharge included.
This does not provide the complete protection of the Actisense® Opto-isolator OPTO-1 device, as the ground connection is common, but it will protect a PC against most common noise spikes present on a boat.

Designed primarily for use in re-programming the Actisense® DST-2 modules and the Actisense® Active transducers (TDR).

When new software becomes available on the Actisense® website, this adapter cable enables the flash update ActiPatch software to connect to the sensor and download new software.

No external power supply is required as the cable takes all necessary power from the RS232/PC port. Simple installation requires wiring the open end to the NMEA device, and plugging the D-type connector into the PC serial port.
Geek Mode

Technical Specification

Supply voltage Derived from computer serial port 7 15 V
Supply current Derived from computer serial port 2 5 mA
NMEA in/out        
Input voltage tolerance

Continuous operation

Short term operation (<1 sec)







Differential input voltage Required level for data to be detected 1.8 - V
Output voltage threshold

Logical LOW

Logical HIGH







Output current Dependant on computer serial port - 10 mA
RS232 in/out        
Input voltage tolerance   -15 +15 V
Input voltage threshold

Logical LOW

Logical HIGH







Output voltage range 3K ohm load, "V"=RS232 port voltage -V +V V
Output resistance Output voltage swing +/-2V 200 - ohms
Baud rate   2400 115200 bps
Ambient temperature   -20 +70


RS485-1 RS485 to RS232
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"With a staff of some of the sharpest engineering minds in the industry and a relentless drive to innovate, Actisense has achieved a standard of quality and reliability most companies only hope for. Their innovative designs and top-quality manufacturing result in a broad range of solutions infused with durability and value. We are proud to share in their success and without hesitation, recommend Actisense solutions to all of our customers."
Peter Braffitt, General Manager, GEMECO Marine Accessories
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