AutoGRAPH-GSM • USER MANUAL
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TechnoKom © 2015
Connection of GSM Antenna
The AutoGRAPH-GSM controllers are supplied with a flat GSM antenna. The antenna has an
adhesive coating for it to be stuck to the window.
The GSM antenna is connected to the connector in the lower-left part of the controller.
The position of the GSM antenna is critical to good performance of the GSM and GPRS
communication; therefore it is highly recommended to plan the antenna’s position on a vehicle
before installation.
The antenna should be located in an open area, which shall ensure free GSM signal
transmission.
Wipe the window surface with the cloth supplied with the antenna before you attach the
GSM antenna. If antenna is supplied without a cloth, clean the window surface with any cloth
damped with alcohol-based liquid before sticking the antenna.
When locating the antenna make allowance for the length of its cable. When laying the cable, avoid
sharp edges. Cable bend radius should be at least 10 cable diameters (about 3-5 cm).
Do not fix antenna before you make settings and configure your system, it is highly recommended
to determine its final position and install only when you are absolutely sure that the system is
configured and operates properly.
i
NOTE
Do not splice or cut the antenna cable.
In order to avoid cross-talk effects place the GSM and GPS/GLONASS antennas at least 50 cm away from
each other.
IMPORTANT
IMPORTANT