Isolated USB To Serial Gateway for use with NMEA 0183, RS422 and RS232.
The USG-2 ensures safety and reliability when connecting a PC to your NMEA 0183 network.
The USG-2 converts a USB port into a bi-directional serial port suitable for connecting to a marine standard NMEA 0183 data bus.
It provides a far safer connection when compared to standard USB to serial converters.
Electrical isolation is provided by the ISO-Drive™ output and OPTO-isolated input making installation simple and free from ground loops.
The input uses the Actisense OPTO-isolation circuitry to protect any connected equipment from the most common system faults. The input can receive very low-level signals that are often too small to be received by a PC serial port.
The USG-2 is the safest way to connect a boat’s data network to an on-board PC.
Use case
A USG-2 is the safest and most reliable method of connecting NMEA 0183 instruments to a PC. The device offers full isolation and protection for both the PC and the connected device.
Many marine applications utilise NMEA 0183 as the data format rather than NMEA 2000. A perfect example of this is OpenCPN, where the user needs to get GPS data into the application for an accurate location fix. The USG-2 makes this very easy by creating a Com Port on the PC for the USB connection, which can then be opened by the application at the same baud rate as the GPS (typically 4800 baud). The USG-2 is very simple and quick to wire up, saving time and money.
The cheaper serial to USB converters on the market do not offer the same level of protection to the connected devices, meaning the USG-2 offers a much safer connection.
FEATURES
• NMEA 0183, RS422 & RS232 compatible
• ISO-Drive™ technology
• Pluggable screwless connector with locking latch & strain relief
• Encapsulated electronics
• High retention USB socket
• Diagnostic & power LEDs
• Baud rates from 300 to 230400 bps
• Bulkhead mount, with optional DIN rail mount kit
• Pluggable screwless connector
benefits
• Inputs & outputs protected against over voltage, ESD & short circuits
• Simple installation
• Protects PC from damage
• Eliminates ground loops
Technical Specifications
Power Supply (USB)
Power Source: Bus powered
• Maximum Bus Current: 50mA
NMEA 0183 Port – Talker & Listener
• Number of Listener/Input Ports: One isolated NMEA 0183 Listener
• Number of Talker/Output ports: One isolated NMEA 0183 Talker
• Compatibility: Fully NMEA 0183, RS422 & RS232 compatible. RS485 Listener compatible
• Galvanic Isolation: NMEA 0183 Talker and Listener Isolation
• Speed/ Baud Rate: 4800 to 230400 bps / baud
• Connectivity: Pluggable screwless connector with locking latch and integrated push-button. Utilises cage clamp for 12 to 24 AWG wires (both solid and stranded)
• Talker output voltage drive: >2.0V (differential) into 100Ω
• Talker output current drive: 20mA max.
• Talker output protection: Short circuit and ESD
• Listener input voltage tolerance: -15V to +15V continuous
• Listener input protection: Current limited, overdrive protection to 40V DC and ESD protection
USB Port
• Compatibility: USB 1.1, 2.0 and 3.0
• Speed/ Baud Rate: 300 to 230400 Baud
• Connectivity: High retention type-B receptacle (supplied cable includes a custom USB Type-B sealing plug)
• Withdrawal Force: 1.5Kg
• Drivers (Latest OS): Windows XP, Vista, 7, 8, 10, 11 & MAC OS X supplied on CD & Actisense website
Mechanical
• Materials: Housing – ABS (PA-765), flame retardant to UL94 V-0; PCB encapsulant – polyurethane, flame retardant to UL94 V-0; Pluggable screwless connector – PPA-GF with CrNi spring and tin plated Ecu contacts
• Mounting: Bulkhead mount (s/s self tapping screws included) or optional DIN rail mount kit available
• Weight: Main body 65g, USB cable 70g
• USB cable length: 2.0m shielded USB Type-A to Type-B cable including custom USB Type-B sealing plug
Approval & Certifications
• EMC: EN 60945 (sections 9 & 10)
• Environmental protection: IP67 (Encapsulated electronics)
• Operating temperature: -25°C to +70°C
• Storage temperature: -40°C to +85°C
• Relative Humidity (RH): 0 to 93% RH
• Guarantee: 3 years (5 Years if registered)
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