Etesia ET MOWER ETM105 Original User Manual page 52

5• FREQUENT ISSUES AND QUESTIONS
PROBLEMS
The GPS position visualizing through the
'Track&Trace' server is not corresponding
to the exact position of the robot
Unable to open the history log file
downloaded from the Track&Trace server
using the Dealer Tool Suite software
Time mismatch between the SMS
messages and the information which can
be visualize on the 'Track&Trace' server
or in Dealer Tool Suite
Is there some subscription fee to the
'Track&Trace' service?
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Make sure you have selected the correct robot to visualize and the correct time stamp.
The accuracy/inaccuracy of the localization is inherent to the GPS system and can be affected by
following factors :
- trees or buildings reducing the sky visibility
- time and exact location on Earth affecting the number of satellites which can be seen
When the GPS receiving conditions are very bad, the GPS receiver module embedded on the
robot might detect itself poor conditions and not send any GPS information. This is also the case
just after the module has been restarted.
Take contact with your dealer to check the versions compatibility between the firmware
embedded in the robot and the Dealer Tool Suite version you should use.
There are five different 'clock' references involved in the system:
- The clock of the robot that you can define through the keyboard (refer to ETESIA robot user
manual).
- The clock that the 'Track&Trace' module is capturing directly from the GPS satellites.
- The clock that the 'Track&Trace' module keeps updated without the GPS reference.
- The clock of the server.
- The clock of the GSM/GPRS network.
Depending on the information you look at, you will see the different clock references.
Normally, the various clocks should correspond but there might be some differences explaining
the mismatch you are observing. (Example : no automatic summer time change, wrong time zone,
no GPS fix, ...).
In particular, the timing information that you get included in the SMS responses is the GPS clock
acquired by the 'Track&Trace' module. When the 'Track&Trace' module has been switched off
and there is not yet GPS fix, the 'Track&Trace' module clock is starting with the time of the last
GPS fix before the module was switched off. If the module has been kept off for several days, the
time included in the SMS messages might then be very old. This will become correct as soon as
the module has acquired the GPS fix.
There is a yearly renewal of the subscription to be done so you can continue with the service. The
subscription for the first year is included in the installation price. For following years, your dealer
will contact you upfront to make sure you are renewing the subscription and you do not get a
service interruption.
SOLUTIONS