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3.2 Roof and Trunk version of ATM-02
For ATM-02 there are two assembly situations in the vehicle. Therefore, two versions of the ATM-02 are
used: the roof version and the trunk version.
The roof version is direct mounted with the roof antenna and has a direct connector with it. Also a
internal backup antenna is included in the roof version of ATM-02. RF signals, which are not use from
ATM-02 as DAB or SDARS, go through the ATM-02 to an external connector. Telephone antennas are
connected via a splitter to provide the signal also to the vehicle.
The trunk version is installed in the trunk. In each case spatially separated from the antennas. The main
antennas and the backup antenna are external. The trunk version of the ATM-02 does not contain an
internal backup antenna.
Figure 1: drawing - ATM-02 trunk version (orange) mounting example
Both variants are equipped with the same PCB board based on the same master circuit diagram. The
10-pole and 20-pole connectors to the vehicle infrastructure are identical. Both versions are using
identical materials for the housing and are equipped with the same backup battery type and battery
protection circuits. The internal backup antenna is only assembled in the ATM-02 roof variant.
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