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IEEE (The Institute of Electrical and Electronics Engineers Inc.), through periodic and thorough evaluation of scientific studies. These guidelines establish permitted levels of radio wave exposure for the general population. The levels include a safety margin designed to assure the safety of all persons, regardless of age and health, and to account for any variations in measurements.
Specific Absorption Rate (SAR) is the unit of measurement for the amount of radio frequency energy absorbed by the body when using a transceiver. The SAR value is determined at the highest certified power level in laboratory conditions, but the actual SAR level of the transceiver while operating can be well below this value. This is because the transceiver is designed to use the minimum power required to reach the network.
The GR64 wireless modem device has been approved for applications where the antenna is located >20cm from the body. In all other configurations the integrator is responsible for meeting the local SAR regulations. Integrators of the GR64 wireless modem device are responsible for ensuring that they meet the SAR regulatory requirements of the countries in which they intend to operate the device, and that their documentation contains the relevant SAR declaration, certification information, and user guidance as appropriate.
6.6. Personal Medical Devices
Wireless modem devices may affect the operation of cardiac pacemakers, hearing aids and certain other implanted equipment. If a minimum distance of 15 cm (6 inches) is maintained between the GR64 module’s radiating antenna and a pacemaker, the risk of interference is limited. If the integrator’s application is likely to be situated in the vicinity of personnel, a suitable warning should be contained in the equipment manual to this effect.
7. INSTALLATION OF THE MODEM
This chapter gives you advice and helpful hints on how to integrate the GTR64 Terminal into your application from a hardware perspective.
7.1 Where to install the modem
There are several conditions which need to be taken into consideration when designing your application as they might affect the modem and its function. They are:
7.1.1 Environmental conditions
The modem must be installed so that the environmental conditions stated in the Technical Data chapter, such as temperature, humidity and vibration are satisfied.
Additionally, the electrical specifications in the Technical Data section must not be exceeded.
7.1.2 Signal strength
The modem has to be placed in a way that ensures sufficient signal strength. To improve signal strength, the antenna can be moved to another position. Signal strength may depend on how close the modem is to a radio base station. You must ensure that the location at which you intend to use the modem, is within the network coverage area. Degradation in signal strength can be the result of a disturbance from another source, for example an electronic device in the immediate vicinity. More information about possible communication disturbances can be found in section 7.3.5.
When an application is completed, you can verify signal strength by issuing the AT command AT+CSQ. See “AT+CSQ Signal Strength”.
GTR64 Integrators Manual V.1.2 Pag. 27
Preliminary. Subject to change without prior notice
