Instrumentation GDD GRx8mini, Instruction Manual

Page: 59 / 141

Instrumentation GDD Inc. 2018-04-06 Page 59
8.4 Raw Data Option
8.4.1 Check GPS
To use the GPS function, your receiver must be equipped with an internal GPS module. This
GPS module is designed for use with applications that require accurate time (getting GPS
timestamps in output files, synchronizing a receiver with a transmitter using GPS signal,
recording raw data without synchronization for post processing, etc.).
The
Check GPS
option is used to verify if a satellite is being tracked by the GPS module.
Connect an external antenna (SMA) to the GPS connector of the GRx8
mini
receiver for more
efficiency.
After turning on the GRx8
mini
receiver, it can take up to 2 or 3 minutes for the GPS receiver to
track and synchronize with a satellite.
Important: the internal GPS module of the receiver can take up to 15 minutes to get the UTC
time. Wait for this time before taking your first reading if your receiver needs to get the
same GPS time than another device.
Select Tools | Raw Data | Check GPS