© 2015 Active Research Limited
USB to Serial Gateway - USG-2
Page 7
Before getting started
The wire colours used in this user manual are in accordance with the NMEA 0183 specification (v.4.10, June 2012) and
are for illustration purposes only. Please ensure that the wiring colours detailed in the installation instructions of the
device you wish to interface to the USG-2 are understood as they may well be different from those shown.
Connecting to Devices
Strands of wire must not be twisted before inserting in to the screwless connector, this will ensure a much more secure
termination than if the wires are twisted. A small flat headed screwdriver (2-3mm) is needed to press down on the
orange buttons and open the terminal for the wires to be inserted or removed.
Connecting to NMEA 0183 Devices
USG-2 label:
Connects to:
Talker A/+
NMEA 0183 Listener ‘RX A/+’ or ‘NMEA IN A/+’
Talker B/-
NMEA 0183 Listener ‘RX B/-’ or ‘NMEA IN B/-’
Listener A/+
NMEA 0183 Talker ‘TX A/+’ or ‘NMEA OUT A/+’
Listener B/-
NMEA 0183 Talker ‘TX B/-’ or ‘NMEA OUT B/-’
Bi-directional Connections
If connecting an NMEA 0183 Talker as well as an NMEA 0183 Listener to the USG-2, both devices must communicate at
the same baud rate and be connected as above.
Please refer to your device’s user manual for the correct terminations when connecting the USG-2 to RS232
or RS422 devices.
Award Winning
NMEA Specialists
www.actisense.com
Software & Documentation
In the USG-2 Box
Main body
Pluggable screwless
connector
Strain relief clip
Quick Start Guide
Actisense CD
Mounting screws
High-quality
USB lead
