15 - LabSat3 Troubleshooting
Restart
• Should you need to restart the LabSat 3 unit for any reason please hold down the power button continuously for at
least 30 seconds. Release the button and then press again briefly to switch device on.
Trouble Locking onto Satellites
If the GNSS engine under test is having trouble locking onto satellites when replaying recorded data then please follow
the checklist below for typical solutions:
• During recording of LabSat data, ensure that the antenna is placed in a position where it has an unobstructed view
of the sky. (See ‘GNSS Antenna Placement’ below)
• Check the antenna connection with the LabSat; any small amounts of dirt in the socket can cause a significant
reduction in signal strength. Also check the cable for any damage.
• If possible try another known working antenna, to confirm antenna functionality.
• Perform a Cold Start of the device under test after each start of the data replay. This is because a GNSS receiver
will normally download and store almanac information to help it re-acquire satellite signals from power
up. Therefore, when a recorded GNSS test signal is replayed, it is possible that any almanac data previously stored
in the GNSS engine will cause it to look for the wrong satellite signals.
Please also note that when using any GNSS equipment,
a clear view of the sky, without physical obscuration, is
important. Objects in the surrounding area such as tall
buildings or trees can block the GNSS signal causing a
reduction in the number of satellites being tracked, or
introducing reflected signals that can decrease the
accuracy of the system. Note that clouds and other
atmospheric conditions do not affect the LabSat 3
performance.
https://racelogic.support/03LabSat_GPS_Simulators/LabSat_3/LabSat_3_User_Manual/
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Summary of Contents for LabSat 3
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