USG-1: Serial Gateway

Connect your data network to your PC or Mac USB port with full electrical isolation.

The USG-1 allows easy connection of a PC or Mac to an NMEA 0183 (RS422) network while keeping it totally protected and isolated. Our industrial option, the USG-1-485, will connect a PC to an industry standard RS485 / IEC 61162-2 half-duplex system. No marine PC should be without one of these world-first products.

• Full galvanic Opto-isolation on NMEA 0183 input; or RS485 input
• Full galvanic isolation on NMEA 0183 / ISO-Drive output; or ISO-Drive RS485 output
• Capable of very high Baud rates (up to 115200 bps)
• USB v1.1 and v2.0 compatible

The Actisense® USG-1 interface is an easy, safe and low-cost method of connecting your marine system to a USB equipped PC. While protecting the most vital and expensive devices in the system, it also creates a virtual serial port that allows connection to an NMEA 0183 (RS422) marine bus link; or to an RS485 industrial bus link.

Total galvanic isolation is assured using an ISO-Drive output and the use of the trusted Actisense OPTO isolated input circuitry, or transceiver circuitry in the case of USG-1-485.

The ISO-Drive output offers total galvanic isolation from the input and can "float" safely up to 1500 VDC from ground. Its sophisticated circuitry is 100% compatible with the NMEA 0183 RS422, industrial RS485, and single-ended PC RS232 "COM" ports.

The USG-1 provides comprehensive isolation of the expensive PC hardware when connecting to an NMEA 0183 (RS422) bus that may have picked up potentially hazardous voltages around the electrically noisy environment of a vessel or factory, and makes installation simple due to the isolation of the PC ground from the NMEA 0183 or RSG485 data network ground, often the biggest cause of data errors and one of the biggest safety hazards in any electronic installation.

No external power supply is required as the cable takes all necessary power from the USB port. Simple installation using plug & play USB drivers supplied on CD allows the PC to start sending and receiving data to your network within minutes of installation.