I n n o v a t i v e M a r i n e P r o d u c t s f o r t h e I n f o r m e d S e a f a r e r - S i n c e 1 9 9 5
ComNav Vector G2B GNSS Compass with NMEA 0183 Output w/30 Meter Cable - 11220004
The Vector G2 GPS Compass is a state-of-the-art electronic navigation data device. It is capable of providing highly accurate, high-precision position and heading data to a wide variety of marine Navigation equipment, such as autopilots, sonar, radar, chartplotters, AIS receivers & transponders, and many other types of marine devices & systems. The Vector G2 features fast start-up and signal re-acquisition times, heading & position updates at up to 20 times per second, and can operate at sustained turn rates up to 90° per second. The Vector G2 is a complete GPS Compass in a single rugged, marine-grade enclosure. It needs only one single power/data cable, which greatly simplifies installation.
There are two models available – the Vector G2 and the Vector G2B; they are identical, except in their Differential GPS (DGPS) correction features:
The Vector G2 can obtain DGPS information from many Space-Based Augmentation System (SBAS) sources (in areas where compatible ones are available & operational), including WAAS, EGNOS, MSAS, SNAS, GAGAN and others. The Vector G2 can also accept DGPS information from an external data source.
The Vector G2B has an additional integrated beacon receiver module, which allows it to use conventional terrestrial DGPS Radiobeacon signals to obtain DGPS information, in addition to SBAS sources & external DGPS data sources. The Vector G2’s enclosure contains a Hemisphere GPS® Crescent® GPS/SBAS receiver module 1 (containing twin GPS receivers, a single-axis gyro & a tilt sensor), dual GPS antennas and a power supply. The Vector G2B also contains a DGPS Radiobeacon receiver module, and an H-field beacon signals antenna. When using DGPS corrections (SBAS, external, or Radiobeacon), the Vector G2 is capable of one metre precision for position sensing. The GPS antennas inside the G2’s enclosure are separated by 0.5 metres, which provides 0.5 degree precision for heading sensing.
The gyro and tilt sensor improve system performance, and can provide heading information for up to three minutes whenever the G2’s normal GPS-based heading is not available due to signal blockage, or other temporary factors.
The Vector G2 also features Hemisphere’s exclusive COAST™ software, which enables the GPS receiver to utilize old DGPS correction data for 40 minutes or more without significantly affecting the quality of position reports. The COAST feature means that the G2 is less likely to be affected by DGPS signal outages due to signal blockages, weak signals or interference.
If you are new to GPS technology, we recommend that you consult Hemisphere’s GPS Technical Reference manual 2 for further information on the capabilities & general features of their Crescent-based GPS products, before proceeding.
Note: while the Vector G2 & G2B are designed to provide highly accurate GPS position & heading data, even when subject to the pitching, rolling and wide speed range of marine vessels, the use of the G2s is not limited to the marine market. Other excellent applications include machine control, machinery guidance, container tracking, or indeed any application that requires high-precision position and/or heading information in an all-weather outdoor environment.
The Vector G2 is factory-configured for easy use in typical marine situations. The goal when the factory-default settings were being selected was that the G2 could be used “right out of the box” in most marine applications, with no changes required in configuration settings.
ComNav hopes that you will be able to do exactly that … use your new Vector G2 right out of the box! But if not, then the information in this user manual will show you how to adjust your G2 to operate to meet your specific needs.
Beacon Receiver Specifications (G2B)
Gyro: Single axis gyro provides reliable < 1º heading for periods up to 3 minutes when loss of GPS lock has occured
Tilt Sensor: Assists in fast GPS Signal Reacquisition
* Depends on multipath environment, number of satellites in view, satellite geometry, baseline length (for local services),
and ionospheric activity.
** Depends on multipath environment, number of satellites in view, and satellite geometry