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A discrepancy exists between the differential standards used at the Base and Rover
receivers.
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Ensure the Base and Rover receivers use the same corrections input/output format:
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Connect your receiver and a computer and start NetView&Modem.
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Click the Ports tab. Use the same input/output format for both receivers.
Poor satellite geometry (PDOP/GDOP values are too high).
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Conduct your measuring when PDOP values are low.
The transmitting and/or receiving antenna may be improperly connected.
•
Check that the radio modem’s antenna is securely and properly connected to the
antenna connector.
•
Check that the radio modem’s antenna is undamaged. If damaged, contact your JAVAD
GNSS dealer to replace the antenna.
The specified baud rate is incompatible with the baud rates the receiver supports.
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The baud rate is the rate at which the receiver transmits differential messages to the
receiver and vice versa. Change the baud rate to that which your receiver supports.
The Base and Rover receivers use different radio link parameters.
•
Configure the Base and Rover radio receivers according to the procedures listed in the
applicable section.
The distance between the Base and Rover is too far.
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Close the distance between the Base and Rover.
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Use repeaters to increase radio coverage.
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There may be a source of radio interference that disrupts radio communications.
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Change the RF channel (if possible).
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Use a spectrum analyzer to detect the radio characteristics of the interfering signal and
change your system’s configuration accordingly.
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Remove the source of jamming signal or relocate your radio antennas (if possible).
The receiver does not start data logging.
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The memory option is disabled or expired.
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Check that the memory option is enabled.
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The receiver’s memory has no free space.
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Download and/or delete data files to free up space for new files.
