December 7, 2020
Guidance for SAR data re-use on depopulated variants from a reference model
This notice advises that ISED may permit SAR data re-use or test reduction for depopulated variant model(s) based on SAR test data from a reference model and highlights the requirements to do so.
To initiate this process, the applicant shall submit an inquiry to obtain pre-approval from ISED prior to submitting depopulated variant model(s) for certification. Such a request shall be sent to ISED Certification and Engineering Bureau at the following email address: email@example.com
The applicant shall fully test the reference model to ascertain compliance with all applicable requirements set forth in applicable Radio Specifications Standard(s) (RSS).
The reference model shall be certified in Canada.
Compliance data shall not be re-used for the certification of a variant model if the test report submitted to demonstrate the compliance of the reference model is more than 1 year old and/or if more stringent requirements (e.g. change in limit, change in measurement procedure) have come into force after the certification of the reference model.
The reference model’s certification number shall be clearly identified in the variant model’s technical brief.
The acceptance of data re-use will be dependent on spot checks being performed for conducted power and SAR.
Simultaneous transmission shall be considered when demonstrating overall compliance.
For standalone transmission, the following conditions shall be met:
The conducted power of the variant model(s) shall be within the manufacturer’s tune-up tolerance. If tune-up tolerance(s) are exceeded, ISED shall be consulted.
If the worst-case reported SAR value in the reference model’s original RF technical brief is less than or equal to 1.2 W/kg, spot checks must be performed on each depopulated variant for:
The configuration yielding the wort-case SAR identified for the reference model.
Where the worst-case SAR value for the spot check is above 30% of the worst-case SAR value in the original SAR report for the reference model, additional testing shall be performed (refer to c.i).
If the worst-case reported SAR value in the original RF technical brief of the reference model is above 1.2 W/kg, spot checks must be performed on:
The worst-case test configurations identified for the reference model for each antenna, each frequency band, and each technology.
If any of the worst-case SAR values for the spot checks are above 30% of the SAR values in the original SAR report for the reference model, full testing is required.
Notwithstanding the above conditions, ISED may request full testing of variant models if deemed necessary.
For reporting purposes, the final reported SAR value(s) of a variant model shall be the worst-case value(s) from either the reference model or from the spot-check testing.
Should you have any questions, please use our General Inquiry form.
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