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GPS Tracker |
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AVL-900 |
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Q:
After AVL-900 installed, why there is no response?
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Q:
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…)
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Q:
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
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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.
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Q:
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.
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Q:
Does the weather affect GPS operation?
GPS system is able to overcome weather problem in its initial design. GPS satellite positioning signals consist of short waves; the transmission of short waves will not be affected by weather conditions. GPS signals may produce error factors during transmission, such as solar wind, earth rotation, variation of aerosphere density, building reflection, etc. All of which may cause deviations to GPS short wave affect signals. But weather factors will not affect the normal function of GPS.
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Q:
Why can not it monitor?
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Check the microphone connector whether it
was connected properly or not.
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Check the memory for SMS messages in the SIM
card, to see if it is full or not.
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Can not receive GSM signal in the place
where you locate.
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