Raven Envizio Pro, Installation & Operation Manual

Page: 182 / 232

Chapter 11
172 Envizio Pro and Envizio Pro II Installation and Operation Manual
GPS Error Messages
Issue Possible Cause Solution
Guidance Not
Available
• Displays when starting a
job without a GPS signal
• Make sure a GPS receiver is connected to the field
computer and that the receiver is powered up, then select
Auto-Detect.
• Make sure the correct GPS Source is selected (Tools
Menu>GPS menu>Source)
No Differential
• Differential GPS has not
been detected by the
field computer
• Check the GPS receiver to make sure that it has the
differential correction function. Contact the manufacturer for
additional information.
No GPS
• Field computer does not
detect a GPS signal
• Make sure that the GPS receiver is turned on and receiving
a signal.
• Make sure that the port setting for the field computer and
the GPS receiver match.
• Make sure that the required NMEA messages are turned on
in the GPS receiver.
High HDOP
• Satellite constellation
issue
• There is no issue with the DGPS system or cabling. Wait for
the constellation issue to resolve before continuing job.