Trimble Outdoors AgGPS 332 - Manual (Page 57)

AgGPS 332 GPS Receiver User Guide 47
Configuring the Receiver 5
5.3
Configuring Differential GPS
For the receiver to output GPS position coordinates of submeter
accuracy, you must first select a differential signal from one of the
following sources:
• SBAS (WAAS/EGNOS) – free service, limited availability
The Wide Area Augmentation System (WAAS) augments GPS
with additional signals for increasing the reliability, integrity,
accuracy, and availability of GPS in the United States. The
European Geostationary Navigation Overlay System (EGNOS) is
the European equivalent of WAAS.
• OmniSTAR – paid subscription, available worldwide
You can use this paid service as an alternative to WAAS/EGNOS.
It provides over-the-air DGPS activation.
For more information, see Differential GPS positioning (DGPS),
page 10.
53.1
OmniSTAR
The AgGPS 332 receiver can use OmniSTAR corrections. To do this, you
need to configure the receiver and purchase an OmniSTAR
subscription.
Note – To track the OmniSTAR satellite, the receiver must be outside with
a clear view of the sky, turned on, and configured to receive OmniSTAR
VBS or HP corrections.
To activate an OmniSTAR subscription:
1. From the Home screen, select Configuration / DGPS Config.
2. Set the Source Select field to one of the following:
– Omnistar HP
– Omnistar VBS
– Omnistar XP