User's Manual

3.4.4 Switching the GG864-2.4 ON and OFF

3.4.4.1 Switching ON

The GG864-2.4 switches on automatically each time the power supply is connected the first time or re-

connected.

Note- When the power supply cable is disconnected, it is recommended to

wait approximately 5 seconds before applying the power again.

3.4.4.2 Switching OFF

The GG864-2.4 can be switched off either by disconnecting the power supply or by software

command.

It is suitable a software switch-off command before disconnect the power supply cable.

Warning – Please note that hardware power off should be done only after

a proper GSM logoff. Any GSM device is request to issue a “detach”

request at turning off.

3.4.5 Antenna

3.4.5.1 Antenna Output

Warning – BEFORE connecting the GG864-2.4 to a power supply source, suitable

antennas shall be connected and properly installed.

The antenna has to be installed with care to avoid any interference with other electronic devices

and has to guarantee a minimum distance from the body (20 cm). in case this requirement cannot

be satisfied, the system integrator has to assess the final product against the SAR regulation.

For a good efficiency of the antenna and a minimum interference with other electronic systems, a

space of min. 40 cm around the radiating part should be left free of electrically conducting materials.

The less distance and the fewer obstacles between the SWS-GW antenna and the antenna of the

GSM/GPRS network base station, the less power is radiated by the gateway and the better signal

quality is achieved.

3.4.5.2 Antenna Connectors

The GG864-2.4 includes two SMA bulkhead female, class 4 (2W) co-axial connectors for the two

external antennas.

3.4.5.3 GSM Antenna Requirements

The GSM antenna for GG864-2.4 device shall fulfill the following requirements