User's Manual

Troubleshooting
GeoExplorer 2005 Series Getting Started Guide 79
GPS / real-time correction issues
Problem Cause and Solution
No GPS
position
The integrated GPS receiver is not activated
Use the application’s Connect or Activate GPS command to open the
GPS COM port and activate the integrated GPS receiver. For more
information, see Using GPS, page 21.
Incorrect configuration of serial COM port
When supplying GPS to an external device using the COM 1 serial clip,
set the baud rate to the high-speed TSIP setting: 38400, 8, 1, Odd.
GPS COM port is already in use
Only one application at a time can have the port open (unless you
have configured NMEA on COM 2 to be assigned to a COM port using
the GPS Connector utility). Exit the program that is using the GPS
COM port and then retry in your program.
Using wrong GPS COM port
Connect to COM2 if the application uses NMEA messages, or COM3
for TSIP messages. For information on which protocol to use, check
the documentation for the application.
Not enough satellites are visible
Move to a location where the receiver has a clear view of the sky and
ensure the antenna is not obstructed.
Alternatively, adjust the GPS settings to increase productivity. For
more information, refer to the Help provided with your GPS
Controller or TerraSync software, or the GPScorrect or GPS Analyst
extension.
External antenna connected but not receiving data
The handheld can take up to two seconds to detect that an optional
external antenna has been connected or disconnected
Not receiving
SBAS real-time
corrections
SBAS satellite is obstructed from view
Check the location of the SBAS satellite in the Skyplot section of the
GPS Controller or TerraSync software, or the GPScorrect or GPS
Analyst extension, and move to a different location if possible.
You are outside the WAAS, EGNOS, or MSAS coverage area
WAAS corrections are available in the Northern hemisphere between
40° West and 180° West. EGNOS corrections are available in the
Northern hemisphere between 30° West and 60° East. MSAS
corrections are available between 120° E and 165° E. If you have
selected satellites not available at your location, you cannot use SBAS
corrections.