Specifications

文档编号：
15
8.4 Antenna installation and precautions
1）Before installing the antenna, wipe the installation surface clean without dust.
It is best to install it on the surface of iron plate, which can be absorbed. In order to be
firm and reliable, double-sided adhesive can also be added;
2）High power magnetic field shall be avoided around the antenna to prevent
electromagnetic interference from affecting the receiving effect of GSM signal;
3）The antenna shall be installed in a closed metal protection or shelter to avoid
affecting the receiving effect of GSM antenna;
4）Use 0.9N.m torque wrench to fasten GSM and GPS antennas respectively;
5）In order to achieve the best positioning performance, the flat bottom of the
antenna shall be installed as flat as possible, and the inclination shall not exceed 45 °;
6）It should be noted that if the installation position of the antenna is deep (low),
the angle of receiving the satellite signal will be small and good positioning effect
cannot be obtained.