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12.4 Position Determination
The GPS receiver can be used to determine the current GPS position. Furthermore, the user
is able to be informed when the product leaves a pre-defined (permitted) area. All functions in
connection with position determination are explained below. First a few technical notes:
• Depending on GPS receiver position, sight connection to the sky and the current weather
situation, it may take up to 5 minutes until a GPS localisation can be performed.
• The time until the first position is recognised may be reduced by optimised receiver position.
• Within the first 30 minutes after position determination, the GPS position data may have a
higher deviation. This is connected with the GPS signal that requires correction data for high
accuracy. They are overlain with the GPS signal and are usually transmitted once every
30 minutes.
12.4.1 GSM Cell Location (CELL)
When the device cannot find any GPS site, there is the option of determining the position using
the GSM cells nearby. However, this is an emergency solution only when actual location
determination via GPS is not (no longer) possible.
Use the following text message command for this:
TEST CELL #1513
• To break down the radio cell codes, contact your mobile phone provider.
• Observe that the query about the current site is not supported by all providers.