Sony PRS-900 Manual

178

 The SAR value is determined at the highest certified 

power level in laboratory conditions, but the actual 

SAR level of the Reader while it is operating can be 

well below this value.

 This is because the Reader is designed to use the 

minimum power required to reach the network.

 Variation in SAR below the radio frequency exposure 

guidelines do not mean that there are variations in 

safety.

 While there may be difference in SAR levels among 

Readers, all Sony Reader models are designed to 

meet radio frequency exposure guidelines.

 The tests are performed in positions and locations as 

required by FCC for each model.

 This Reader model PRS-900 has been designed to 

comply with applicable safety requirements for 

exposure to radio waves. These requirements are 

based on scientific guidelines that include safety 

margins designed to assure the safety of all persons, 

regardless of age and health.

 The radio wave exposure guidelines employ a unit of 

measurement known as the Specific Absorption 

Rate, or SAR. Tests for SAR are conducted using 

standardized methods with the Reader transmitting 

at its highest certified power level in all used 

frequency bands.

 SAR data information for residents in countries that 

have adopted the SAR limit recommended by the 

ICNIRP, which is 2W/kg averaged over 10g of issue. 

In other countries, such as the US, the adopted limit 

is 1.6 W/kg averaged over 1g of issue.