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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” 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 re-
ceiver 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” for information on setting the elevation
mask.
A discrepancy exists between the differential stan-
dards used at the Base and Rover receivers. Ensure the
Base and Rover receivers use the same corrections in-
put/output format:
Connect your receiver and a computer and start
NetView.
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.
The elevation mask is above 15 degrees.
Lower the elevation mask.
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 re-
place the antenna.
The specified baud rate is incompatible with the baud
rates the receiver supports.
The baud rate is the rate at which the receiver trans-
mits differential messages to the receiver and vice ver-
sa. 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 accord
-
ing to the procedures listed in the applicable section.
The distance between the Base and Rover is too far.
Close the distance between the Base and Rover.
Use repeaters to increase radio coverage.
There may be a source of radio interference that dis-
rupts radio communications.
Change the RF channel (if possible).
Use a spectrum analyzer to detect the radio charac-
teristics of the interfering signal and change your sys-
tem’s configuration accordingly.
Remove the source of jamming signal or relocate
your radio antennas (if possible).
The receiver does not start data logging
The memory option is disabled or expired.
Check that the memory option is enabled. For details,
see “Checking an OAF” .
The receiver’s memory has no free space.
Download and/or delete data files to free up space for
new files. Use the AFRM feature.
Technical Support
If the troubleshooting hints and tips in this Operator’s
Manual fail to remedy the problem, contact JAVAD
GNSS Support.
Before contacting JAVAD GNSS Customer support
about any problems with the receiver, see “Check This
First!” for some solutions that may fix the issue.
To contact JAVAD GNSS Customer Support use the
QUESTIONS button available on the www.javad.com.
For quick and effective support, provide a detailed
description of the problem.
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