MoTeC GPS-G1 - Manual (Page 5)

MoTeC Using the GPS 3
Data Logger Configuration
Software Version
The Data Logger must be running the following software version (or higher)
SDL Version 1.3 or higher
ADL2 Version 4.4 or higher
ACL Version 1.1 or higher
Setup Requirements
• In the communications setup
o Select RS232 in the list then select GPS - Standard RMC GGA
template
o Change the baud rate to 19200 for GPS-G1
Change the baud rate to 38400 for GPS-G1(T)
• In the logging setup
o The following channels must be logged:
GPS Latitude, GPS Longitude, GPS Speed.
The other GPS channels are optional.
o The Logging Rate for all GPS channels should be set to 20 Hz
(even though the GPS is 5 Hz)
GPS Operation
In normal use the GPS unit should start operating within 15 to 45 seconds of
power up, however during first start-up or if the GPS has been moved to a
new location it may take up to 5 minutes before it gains satellite lock and
starts transmitting data.
To check that the GPS is operating correctly check the number of satellites
being received using the logging device Manager software.
The GPS requires a minimum of 4 satellites to function however normally the
GPS should see at least 7 satellites. If the GPS sees more satellites it will
improve accuracy and minimise satellite drop out.
Loss of signal may occur when the satellites are obscured by trees, buildings
or a bridge. The GPS will take a second or two to recover from this situation.