SAR Test

The SAR test, or Specific Absorption Rate (SAR) test, is a measure of the amount of radiofrequency (RF) dosimetry of the magnitude and distribution of absorbed electromagnetic energy within biological objects exposed to RF fields.

These levels are expressed in watts per kilogram (W / kg). International regulatory agencies require SAR assessments for most portable and mobile wireless technologies.

Parameters that can affect SAR include:

• Radio service types (cellular, PCS, LMR, WLAN, etc.)
• Modulation types (CDMA, GMSK, TDMA, AMPS, etc.)
• Physical orientation to the person (held to the ear, held to the face, belt clip, hug held, etc.)
• RF power level (in Watts or mW)
• Changes to transmitter, antenna (removed / retracted) or accessories (clips, batteries, etc.)

The FCC classifies a wide variety of portable transmitters operating independently as potential candidates for SAR testing. For example, laptops may require SAR testing. SAR testing may be required on handsets, pagers, and other strap-mounted devices. SAR testing may be required when portable transmitter antennas and radiating structures are less than 20 cm from people except extremities (hands, wrists, feet and ankles) and depending on the frequency and threshold levels of the device.

EUROLABhas the accreditation and experience to efficiently and cost-effectively perform Specific Absorption Rate (SAR) Testing up to 6GHz for the US, Canada and Europe.

EUROLAB The SAR facility is fully equipped with the Schmid & Partner Engineering AG (SPEAG™) DASY professional system, which uses an RX 90 robotic arm for comprehensive access capabilities. In addition, our DASY system features multiple twin SAM phantoms and planar phantoms, enabling rapid testing of turnaround times. DASY can evaluate SAR products against all global SAR standards for both head- and body-worn devices.

EUROLABIt tests a range of products such as Cellular/PCS GSM/DCS CDMA/GMSK/TDMA/AMPS phones, PDAs, Laptops, face-to-face devices, W-LAN (2.4GHz and 5GHz) and so on.

Along with SAR testing, EUROLAB also performs Maximum Permissible Exposure (MPE) evaluations for fixed and/or mobile applications. These evaluations are performed on radiating structures intended for use at distances greater than 20 cm from the end user. Typical devices we test are vehicle-mounted antennas operating in the UHF and VHF bands.

The SAR Test Standards we tested:

• IEEE STD 1528 IEEE - Recommended Practice for Measurements and Calculations Concerning Human Exposure to Radio Frequency Electromagnetic Fields, 100kHz - 300GHz.
• FCC OET 65 - Appendix C Assessing Compliance with FCC Guidelines for Human Exposure to Radio Frequency Electrometric Fields.
• IC RSS-102 - Compatibility of Radio Communication Apparatus for Exposure to Radio Frequency RF (All Frequency Bands)
• EN 50361 - Basic Standard for Measuring the Specific Absorption Rate for Human Exposure to Electromagnetic Fields from Mobile Phones (300MHz - 3GHz)
• EN 62311 - Assessment of electron and electrical equipment regarding human exposure restrictions for electromagnetic fields (0Hz - 300GHz)
• IEC 62209-1 - Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices - Human models, instrumentation and procedures. Part 1: Procedure for determining the Specific Absorption Rate (SAR) for portable devices used close to the ear (frequency range 300MHz-3GHz)
• EN 62209-2 - Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices - Part 2: Procedure for determining the Specific Absorption Rate (SAR) for wireless communication devices used in close proximity to the human body (30MHz - 6GHz)
• ACMA - Radio communication (Electromagnetic Radiation - Human Exposure) Standard 2003
• ARIB STD-56 - Specific Absorption Rate (SAR) forecast for mobile phones (Japan, ARIB, Association of radio industries and businesses)
• EN 50360 - Indicates the compliance of mobile phones with the basic restrictions on human exposure to electromagnetic fields (300 MHz - 3 GHz)
• EN 50364 - Limiting human exposure to electromagnetic fields from devices operating in the frequency range of 0 Hz to 10 GHz used in Electronic Article Surveillance (EAS), Radio Frequency Identification (RFID) and similar applications
• EN 50371 - General standard demonstrating the compatibility of low power electronic and electrical equipment with basic restrictions on human exposure to electromagnetic fields (10 MHz - 300 GHz) - General public
• EN 50385 - Product standard for wireless telecommunications systems demonstrating compliance of radio base stations and fixed terminal stations with the basic restrictions or reference levels for human exposure to radio frequency electromagnetic fields (110 MHz - 40 GHz) - R & TTE CAB, a general public Notified Body, It is authorized to review compliance with these standards and other appropriate standards.

EUROLAB, with its highly expert team and internationally accredited laboratories, SAR Test It performs all test, analysis, measurement, evaluation and report generation services completely and reliably.