48 Troubleshooting GeoExplorer Series Getting Started Guide
Not receiving
WAAS/EGNOS
real-time
corrections
(continued)
You are outside the WAAS and EGNOS coverage areas
WAAS corrections are available in the Northern hemisphere
between 30° West and 180° West. EGNOS corrections are
available in the Northern hemisphere between 30° West and 90°
East. If you are outside these areas, you cannot use WAAS or
EGNOS corrections.
Not receiving
real-time
corrections from
external source
No physical connection
Connect the external real-time source to COM1 or a Bluetooth port
on the handheld.
Not connected to GPS COM port correctly
In the Real-time section in GPS Controller, TerraSync, or GPScorrect,
select the serial (COM) or Bluetooth (BSP) port that the real-time
source is connected to.
If you are using a non-Trimble application, use GPS Connector to
create a connection between the COM or BSP port and the
integrated GPS receiver’s real-time GPS COM port (COM4).
Incorrect port settings
Change the port settings to match those used by the external
source.
No GPS positions
You cannot use real-time corrections until the GPS receiver is
computing positions. In the application, make sure that the
integrated GPS receiver is activated, enough satellites are available,
and the satellite geometry (PDOP) is good enough to compute
positions.
No Bluetooth connection to external correction source
The Bluetooth external correction source is more than ten meters
from the handheld, or is obstructed. Move the devices closer
together, in a direct line of sight, to re-connect.
Integrated WAAS selected as second real-time choice
If the WAAS/EGNOS status is Waiting, the integrated GPS receiver
may incorrectly change the status of the preferred real-time choice
to Waiting as well. To avoid this, select Wait for real-time or Use
uncorrected GPS as your second choice.
NMEA data
includes
autonomous
positions
Integrated GPS receiver outputs autonomous positions when
real-time corrections are unavailable.
Configure your NMEA application to filter out non-DGPS positions.
Problem Cause and Solution
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