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Tablet (Tablet) SAR Testing FCC Latest Requirements

See: 24 Time: 2014-11-11

According to the requirements of FCC regulations, product testing methods can be roughly divided into two categories according to the distance between the total diagonals of products, i.e. the testing methods of products with total diagonals less than 20 cm and products with total diagonals greater than 20 cm.

For the test method of Mini-Tablet whose total diagonal distance is less than 20 cm, the test distance is 5 mm, and all the surfaces and edges within 25 mm of the antenna's distance from the surface and edge are tested. If there are multiple transmitters in the product, that is, simultaneous transmission problems, the requirement of simultaneous transmission can be evaluated according to the simultaneous transmission of document KDB648474 D01 V01R05 by multiple antennas of mobile phones. If the product is equipped with a sensor that reduces power with distance, it is necessary to test the state of power reduction at 5 mm distance and the most conservative distance at full power. For example, when the trigger distance of the sensor is (X +Y) mm, the distance of (X-Y) mm in full power state needs to be measured.

According to the requirement of KDB447498 D01 V04, the test distance of Mini-Tablet whose total diagonal distance is more than 20 cm is 0 mm. It is necessary to test the backside and the nearest side within 5 cm from the edge of the antenna. If there are multiple transmitters in the product, that is, when there are simultaneous transmission problems, if the distance edge of the antenna is less than 5 cm, the requirement of simultaneous transmission can be evaluated according to the sum of 1G SAR values and the relationship between peak value and distance. If the antenna distance is greater than 5 cm, the requirement of simultaneous transmission can be evaluated according to KDB 616217.

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