Javad DELTA - Receiver Problems; General Receiver Issues; Differential;RTK Solution Issues

Troubleshooting
Receiver Problems
36 www.javad.com
Generic problems
• The receiver port used for connection is not in Command mode.
• Connect your receiver and a computer using a free port (see “Connecting the Receiver and a
Computer” on page 19) and start NetView.
• Change the Input for the port used for connection to “Command”.
• The receiver does not lock on to satellites for a long period of time.
• See “Managing Receiver Options” on page 33 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 NetView Software Manual for a detailed description of options.
The receiver tracks too few satellites
• The elevation mask value is too high (above 15 degrees).
• Lower the elevation mask. See “TriPad Configuration” on page 26 for information on setting the
elevation mask.
• 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 using a free port (see “Connecting the Receiver and a
Computer” on page 19) and start NetView.
• Click enable Multipath reduction 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 NetView 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.
• If the receiver should function as a Rover, ensure it has the proper configuration.
• The corresponding receiver options may be disabled or expired.
• See “Managing Receiver Options” on page 33 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 NetView 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.
• Check the elevation masks of the Rover and Base receivers; they should be the same. See “TriPad
Configuration” on page 26 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: