SAR Testing

Daraius Hathiram

Would like to hear from others about their experience getting through FCC/CE Mark relative to SAR (Specific Absorbtion Rate) testing on Bluetooth.

I am interested in portable products that would be located right up against the user's body/ear.

There are of course plenty of BT hands-free devices that sit on your ear. These all tend to be Class 2 (low power) Bluetooth and so they probably get an exemption on SAR testing.

Is it possible to get approved with a Class 1.5 (like CC256x) or Class 1 device ? Can anyone point me to such approved devices. And certainly if you have been through the process please pass along some description of Cost/Time involved.

I believe it should be possible since WiFi on cell phones operate at comparable power levels to Class1 Bluetooth. But being DSS, they perhaps get different treatment in terms of SAR.

Thanks

Daraius

over 11 years ago

0 Sundeep Javvaji over 11 years ago

TI__Mastermind 32615 points

Hi,

Let me check it internally and get back to you on this.

Mean while can you please check the certification Section (under Test & Certification tab) in our main wiki http://processors.wiki.ti.com/index.php/CC256x

0 Sundeep Javvaji over 11 years ago in reply to Sundeep Javvaji

TI__Mastermind 32615 points

Hi,

Please see the response f from the lab:

1.For normal used separation distance from device is higher than 20 cm, SAR is not required.
2. For normal used separation distance from device is less than 20 cm, SAR is required. But if conducted average power is lower than basic power limitation by different country criterion, SAR is not required.

FCC BT SAR Test Exclusion Thresholds:

a) If conducted average power >9.7dbm Head SAR is required.( Head exposure is limited to next to the ear voice mode operations)
b)If conducted average power >12.7dbm body SAR is required.

Formula

Bluetooth®︎

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SAR Testing