GoPass AVL-900, Руководство пользователя

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F. Troubleshooting
1. After AVL-900 installed, why there is no response?
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Check the polarity of power connection to see if a wrong polarity is
connected.
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Check the power is on or not.
2. Why does GSM fail to communicate?
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Check if the SIM card is opened
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Check whether the SIM car has password
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Check if the SIM card is correctly placed.
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Make sure the SIM card does support GPRS function.
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Make sure to cut off power, before pulling out the SIM card.
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If the vehicle is parked in a place where the GSM signal is weak.
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GSM base station of mobile operator is crashing.
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Whether this SIM card is suspended (such as forget to pay the bill…)
3. Why GPS can not calculate the position?
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Check if GPS antenna is correctly installed, or if it is placed in a proper
position.
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Make sure there is not be any metal shield, such as windshield heat insulation
paper with metallic content, above the GPS antenna - which may block the
reception of GPS signal.
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Do not park your vehicle under shielding or under a building.
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If necessary, put the GPS antenna outside the vehicle temporarily.
4. Why does GPS positioning take such a long time?
The time used for positioning is affected by many factors, such as the weather,
distribution of clouds, roadside trees, elevated roads, nearby high buildings,
heat insulating papers containing metal elements, and even the covering of the
hands, may affect the reception effect of satellite signals. Positioning a vehicle
in an idle state take less time than positioning it in motion state.