Sar Testing Laboratory Only Necessary For Communication Product Safety Testing

What is SAR testing? Is it only necessary for communication products?

What is SAR testing?

Specific Absorption Rate (SAR) testing is a radio frequency (RF) dosimetry method that quantifies the magnitude and distribution of electromagnetic energy absorbed within biological objects exposed to RF fields. Overexposure to radio frequency (RF) energy can damage human tissue. To prevent this As a result, many countries around the world have introduced standards that limit the amount of RF exposure allowed from all types of transmitters. Environmental Testing can help determine whether your product meets these requirements. We perform the necessary testing on a variety of portable and mobile telecommunications equipment. Environmental Testing is one of the few that can test your products against RF exposure standards as well as electrical safety standards and FCC requirements. One of the organizations that tests and certifies products.

RF exposure is assessed using a "phantom" that simulates the electrical properties of the human head or body. The RF energy passing through the "phantom" is monitored by a precisely positioned probe that measures SAR in Watts/kg of tissue, Federal Communications Commission Under 47 CFR Part 2, Section 2.1093, which regulates SAR, general use products must achieve a SAR limit of 1.6 mW/g averaged over 1 gram of tissue in the head or any part of the body, and over 10 averaged over the hands, wrists, feet, and ankles. 4 mW/g.

In the EU, Council Recommendation 1999/519/EC establishes RF exposure limits. Harmonized standards cover the most common products, such as mobile phones and RFID devices. The limits and methods for RF exposure assessment in the EU are similar but not identical to those in the United States. .

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

Parameters that can affect SAR include:

1. Type of radio service (cellular, PCS, LMR, WLAN, etc.)

2. Modulation type (CDMA, GMSK, TDMA, AMPS, etc.)

3. Orientation to the person's body (keep ear to ear, stay opposite, belt clip, lap, etc.)

4.RF power level (watts or milliwatts)

5. Changes in transmitter, antenna (extraction/retraction) or accessories (clips, batteries, etc.)

Maximum allowed exposure (MPE)

When the user is typically positioned away from the radio transmitter, typically more than 20cm, the RF exposure assessment method is called Maximum Permissible Exposure (MPE), and in many cases the MPE can be calculated based on transmitter output power and antenna type. In some cases, MPE must be measured directly in terms of electric or magnetic field strength or power density, depending on the operating frequency of the transmitter.

About Us

Shenzhen LCS Compliance Testing Laboratory Ltd., abbr. for LCS, was founded in 2004 in Shenzhen, LCS is now growing into an independent comprehensive third-party institution which focuses on test & certification. Profound technical background and diligent working attitude decided LCS with an outstanding high starting point from the outset，pioneering spirit and consciousness of keeping pace with the times which predestined the thoroughly tempered course of LCS.

Our Labs

LCS Founding Members have engineering background and had gradually built up Safety Lab, EMC Lab, RF Lab, SAR & HAC Lab, Reliability Lab, Lighting Electrical Lab, LED Lighting Performance Lab, Energy Efficiency Lab, Electronic Cigarette Testing Lab, Chemistry Lab, BQTF, Environmental and Occupational Evaluation Lab, Battery Lab, Toy Lab, Textile Lab, Food and Food Grade Material Lab. The establishment of our comprehensive labs ensure our test and certification scope covers almost all fields, such as Reliability and Safety test, EMC test, Chemical Hazardous Substances test, Material Analysis, Food Contact Material test, Bluetooth Test & Certification, Environment and Occupational Health, Performance test of spare parts of Automobile and so on.

Authorization

Moreover, LCS won many authorized qualifications both domestic and overseas. LCS is recognized as IEC/ISO17025 laboratories accepted by CNAS and NVLAP, accredited by CPSC, CMA, accredited for CQC, ISTA, CBTL, SASO, SABS. Meanwhile LCS become laboratory authorized by TUV, BQTF issued by the SIG. LCS had also signed cooperation agreements with FCC, ISED, ETL, CEC, UL, E-Mark, CETECOM, KTC, SAA Approval and many other authoritative institutions, hence we can provide our clients with efficient and professional service for product test and certification.

Experience

Our RF experience ranges from WLAN (802.11b/g/n/a/ac), Wi-Fi 6E, Bluetooth (802.15.1), ZigBee (802.15.4), Z-Wave, UWB (802.15.3), WiMAX (802.16), SRD, DECT, RFID, NFC, GSM, WCDMA (+HSDPA/HSUPA), LTE, 5G (NR/VoNR/eMTC/eMBB/URLLC),UHF/VHF, WHDI, AM, FM, DAB, DVB, GPS, GNSS, COMPASS, GLONASS and more. The products we are mostly working with are basestations, client adapters, laptops, cordless phones, baby monitors, cellulars, radars, sensors, scanners, receivers, immobilizers, remote controls, etc. Modern products incorporate not often one, but a variety of co-existing technologies.

Welcome

LCS is a reliable party. With more than 20 years hands-on experience in the field of Radio, Telecom, EMC and Safety certification, including country approvals worldwide, we will guide you with our knowledge. You are very welcome!

We will be pleased to assist you with your questions or inquiries, please contact us.