Javad Maxor User Manual page 113

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Problem
The receiver cannot obtain Code Differential and/or RTK solutions.
Causes
Incorrect Base
coordinates entered.
The receiver is not
configured as a Base
or Rover.
The corresponding
receiver options may
be disabled or expired.
There are not enough
common satellites. In
order to obtain a fixed
solution, the Base and
Rover should track at
least five common
satellites.
Poor satellite
geometry (PDOP/
GDOP values are too
high).
The elevation mask is
above 15 degrees.
The receiver and the
antenna have a poor
connection.
The Base and Rover
modems are set to
different radio
channels.
Solutions
Specify the correct coordinates for the Base station using
PCView or other suitable field data collection software.
• If the receiver should function as a Base, ensure it has
the proper configuration. See "Surveying with the
Maxor" on page 3-7 for further information.
• If the receiver should function as a Rover, ensure it has
the proper configuration. See "Surveying with the
Maxor" on page 3-7 for further information
• See "Checking an OAF" on page 4-11 for details on how
to check current options.
• Enable or prolong the validity of the corresponding
receiver options by ordering a new OAF with the desired
options activated.
• Ensure that both the Rover and Base receivers use the
same, and updated, almanac. See "Collecting Almanacs"
on page 2-34.
• Check the elevation masks of the Rover and Base
receivers; they should be the same.
Conduct your survey when PDOP values are low.Use the
Standalone Mission Planning tool (www.javad.com) to
track DOP values.
Lower the elevation mask.
• Ensure the cable is undamaged.
• Check the cable connector attachment to the receiver.
Remove and reattach the cable connector to ensure a
secure connection.
• Set the Base and Rover receivers to the same radio
channel.
• See "Radio Configuration" on page 2-21.
TR O U B L E S H O O T I N G
Receiver Problems
Maxor User's Manual 5-5