Javad DELTAGNSS Receiver Operator's Manual page 73

The measuring is conducted near obstructions (tree canopy, tall buildings, etc.).
• Check that the Multipath Reduction boxes have been enabled.
• Connect your receiver and a computer and start TriVU. See "Connecting the Receiver
and a Computer" on page 25.
• Click Configuration
and click Apply.
• Move to an area free of obstructions, if applicable.
The receiver cannot obtain Code Differential and/or RTK solutions.
Incorrect Base coordinates entered
• Specify the correct coordinates for the Base station using TriVU or another suitable field
data collection software.
The receiver is not configured as a Base or Rover.
• If the receiver should function as a Base, ensure it has the proper configuration. See
Chapter 3 for details.
• If the receiver should function as a Rover, ensure it has the proper configuration. See
Chapter 3 for details.
The corresponding receiver options may be disabled or expired.
• See "Managing Receiver Options" on page 60 for details on how to check current options.
• Order a new OAF with the desired options activated to enable or extend validity of the
corresponding receiver options. Contact your dealer or visit the JAVAD GNSS website for
details.
• Refer to the TriVU Software Manual for a detailed description of options.
There are not enough common satellites. In order to obtain a fixed solution, the Base and Rover
should track at least five common satellites.
• Ensure that both the Rover and Base receivers use the same, and updated, almanac. See
"Collecting Almanacs and Ephemerides" on page 28.
• Check the elevation masks of the Rover and Base receivers; they should be the same. See
"TriPad Configuration" on page 43 for information on setting the elevation mask.
A discrepancy exists between the differential standards used at the Base and Rover receivers.
Ensure the Base and Rover receivers use the same corrections input/output format:
1. Connect your receiver and a computer and start TriVU. See "Connecting the Receiver and
a Computer" on page 25.
2. Click and the Ports tab. Use the same input/output format for both receivers.
Poor satellite geometry (PDOP/GDOP values are too high).
• Conduct your measuring when PDOP values are low.
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Advanced and the Multipath Reduction tab. Enable the two boxes
Troubleshooting
Receiver Problems
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