Racelogic LabSat 3, User Manual

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Record operation
LabSat 3 uses SD card and HDD memory for storage and playback of GNSS data. It is important to note that Class 10
or higher cards must be used to sustain the transfer speeds required. When recording two constellation types, the data
rate is approximately 8.2MB (Mega Bytes) per second. To ensure that data is collected without error, the card should be
able to sustain 10MB per second. Spare cards and HDDs may be purchased from Racelogic.
It is important that cards are formatted as FAT32. LabSat 3 is able to format cards and HDDs in FAT32 with the optimum
configuration for high speed recording. When a card or HDD is formatted by LabSat 3, it will also carry out a
performance test to determine whether or not the media can sustain the required bandwidth and inform the user if this is
not the case
For record capable systems, the LabSat will be supplied with a magnetic mounting GNSS antenna. The antenna is an
active device with approximately 28dB of gain. The LabSat provides a 2.85V DC bias for antenna power on the centre
pin of the RF IN connector. It is also possible to use third party antennas providing they are compatible with the 2.85V
bias. If connecting LabSat to an antenna which requires a higher bias voltage (e.g. 12v), the antenna bias must be
supplied by the user and an appropriate DC block (such as DCB from
http://gpsnetworking.com/attenuators.asp )
must be inserted at the LabSat 3 RF IN connector to avoid damage to the LabSat.
There are a number of GNSS systems currently in operation or in a test phase. These operate on 3 main frequency
bands.
These are:-
https://racelogic.support/03LabSat_GPS_Simulators/LabSat_3/LabSat_3_User_Manual/
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