Receiver Problems
31
P/N: 1005278-01
T
roubles
hoot
ing
No Code Differential and/or RTK Solutions Obtained
•
Incorrect Base coordinates entered.
– Specify the correct coordinates for the Base station using SRU or another suitable field data collection
software.
•
There could be some obstruction to the Long-Range Bluetooth Technology
®
connection.
– Clear all possible obstructions or relocate the Base so there is a “line-of-sight” path to the Rover.
•
The corresponding receiver options may be disabled or expired.
– Order a new OAF with the required options activated to enable or extend validity of the corresponding
receiver options.
– Refer to the
Sokkia Receiver Utility (SRU) Reference 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.
– Check the elevation masks of the Rover and Base receivers; they should be the same. To do this, on
the SRU main window, choose Receiver Settings
Tracking
Obs.
– Verify there is a clear view of the sky to allow sufficient satellite tracking.
•
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:
a. Connect the receiver to a computer and open SRU
(see “Connection” in the
Sokkia Receiver Utility (SRU) Reference Manual
).
b. In SRU, connect to the receiver.
c. On the SRU main window, choose Receiver Settings
Ports.
d. Double-click on the port to be configured and make sure the input mode of the Rover matches the
format of the Base output mode (i.e. RTCM3).
•
Poor satellite geometry (PDOP/GDOP values are too high).
– Conduct the survey where satellite visibility is better (low PDOP value).
– Ensure the elevation mask is less than 15 degrees.
•
The elevation mask is above 15 degrees.
– Lower the elevation mask. To do this, on the SRU main window, choose Receiver
Settings
Tracking
Obs.
– Verify there is a clear view of the sky to allow sufficient satellite tracking.
•
There may be a source of radio interference that disrupts radio communications.
– Change the RF channel (if possible).
– Removing the source of the jamming signal or relocate the radio antennas (if possible).
Receiver Does Not Log Data
•
The receiver’s memory is disabled or expired.
– Make sure the memory option is enabled. For details, see the
Sokkia Receiver Utility (SRU) Reference
Manual
.
– The receiver’s internal memory card does not have free space.
– Download and/or delete data files to free up space for new files. See “Download and Delete Files” on
page 28.
