Download - GTrek II User Manual

An A-GPS (Assisted GPS) receiver such as your GTrek can address some of these problems by pre-
loading the necessary data into the GPS receiver from an assistance server. Pre-loading this
information can reduce the time-to-first-fix (TTFF) to approximately 15 seconds.
Selecting Update AGPS from the Settings menu opens the utility where this data can be downloaded
from the GTrek servers and up loaded to your GTrek.
The Query button reads the AGPS data from your GTrek and calculates the life (if any) of the data
already downloaded which can be up to 7 days.
The Update button starts the update procedure, an active connection to the internet is required for
this process.
The Exit button terminates the utility.
Use the utility whenever your GTrek has not been used for several days. If the data is not downloaded
you can still use your GTrek but it may take a little longer to obtain a satellite fix and even longer if
you are on the move.

3.7 Download

The Download screen shows the record count and the memory used.
The Erase Logger button when pressed will erase the data logger
memory ready for a new session. A warning message is displayed
requiring the user to confirm the request. This operation can take up to
26 seconds to complete.
Do not switch the GTrek off during this process as the internal
memory will be corrupted. If this occurs use the Configure GTrek
utility to re-initialize the memory.
Your GTrek records location information and real time of day
and date. This time is UTC time and is the same the world
over. UTC is the same as GMT or British Winter time.
To correct for any time difference between UTC time and the
local time a popup dialogue box will be displayed requesting if
the time zone data should be automatically corrected. The
correct time zone information would need to be set on your PC
for the location where the data has been collected to use this
utility. Time zone information can also be set in the analysis screen by selecting Settings->Set Time
Zone and entering the time zone correction in hours and minutes from UTC or GMT.
The Start Download button will initiate the download sequence.
Additional information will be displayed indicating the progress
on the data transfer and elapsed time. When the process has
completed the Download box is removed and replaced by the
data Analysis display. The user will be given the opportunity to
initialize the GTrek memory.
Special Note
If the Data Analysis screen showing the new data is closed
without saving the data the user is prompted to save this new
information. If however the application terminates unexpectedly then that data can be retrieved
manually. Once the data download has been completed a copy of the data is temporarily saved to the
default location (normally MyDocuments\Ski-Log Data Files) with the name Auto-Save.gbf. Copy and
paste this file and rename it for your use.
© GTrek Ltd. 2013 Page 30 of 62 Version 5.4.0