随着信息技术的发展，人民大众越来越关注无线通信终端电磁辐射对人体健康的影响，因为手机和平板电脑已成为我们日常生活中不可或缺的一部分，无论是与亲人保持联系、保持工作联系，还是只是在旅途中享受娱乐，这些设备都真正彻底改变了我们的生活方式。所以确保这些设备对于用户友好和使用安全非常重要。这就是信恒检测BTF测试实验室及其在 SAR、RF、T-Coil和Volume control test方面的专业知识发挥作用的地方。
With the development of information technology,the public is increasingly concerned about the impact of electromagneticradiation from wireless communication terminals on human health, because mobilephones and tablets have become an indispensable part of our daily life, whetherit is to keep in touch with loved ones, keep in touch with work, or just enjoyentertainment on the road, these devices have truly revolutionized our way oflife. So it's important to make sure these devices are user-friendly and safeto use. This is where the BTF test lab and its expertise in SAR, RF, T-Coil andVolume control tests come into play.
SAR（比吸收率）测试主要针对便携式设备，例如手机、平板、手表和笔记本等等，SAR测试的意义是单位质量的人体细胞吸收或消耗的电磁功率。信恒检测BTF测试实验室专门从事 SAR 测试，实验室满足测试环境要求，以及设备齐全，确保设备遵守监管机构规定的安全限值。通过进行SAR测试，制造商可以保证其产品不会对用户造成任何健康风险。
SAR (specific absorption rate) testing ismainly for portable devices, such as mobile phones, tablets, watches andlaptops, etc. SAR testing is the meaning of the electromagnetic power absorbedor consumed per unit mass of human cells. Our BTF test laboratory specializesin SAR testing and is fully equipped to meet the requirements of the testenvironment, as well as to ensure that the equipment complies with the safetylimits set by the regulatory authorities. By conducting SAR testing,manufacturers can guarantee that their products do not pose any health risks tousers.
评估限值
Body Position SARValue(W/Kg)
GeneralPopulation/UncontrolledExposure Occupational/Controlled Exposure
Whole-BodySAR(averagedovertheentirebody) 0.08 0.4
Partial-BodySAR(averagedoverany1gramof tissue) 2.0 10.0
SARforhands,wrists,feetand ankles(averagedover any10gramsof tissue) 4.0 20.0
NOTE:General Population/Uncontrolled Exposure: Locations where there is the exposure of individuals who have no knowledge or control of their exposure. General population/uncontrolled exposure limits are applicable to situations in which the general public may be exposed or in which persons who are exposed as a consequence of their employment may not be made fully aware of the potential for exposure or cannot exercise control over their exposure. Members of the general public would come under this category when exposure is not employment- related; for example, in the case of a wireless transmitter that exposes persons in its vicinity. Occupational/Controlled Exposure: Locations where there is exposure that may be incurred by persons who are aware of the potential for exposure, In general, occupational/controlled exposure limits are applicable to situations in which persons are exposed as a consequence of their employment, who have been made fully aware of the potential for exposure and can exercise control over their exposure. This exposure category is also applicable when the exposure is of a transient nature due to incidental passage through a location where the exposure levels may be higher than the general population/uncontrolled limits, but the exposed person is fully aware of the potential for exposure and can exercise control over his or her exposure by leaving the area or by some other appropriate means.
SAR test chart
HAC（Hearing AidCompatibility）这是数字移动电话在进行通信时与附近的助听器之前会不会产生干扰的一种认证，即测试手机和助听器的电磁兼容，分为RF、T-coil和Volume control test三个部分。我们需要对三个量值进行测试和评估，第一个量值是在音频频段中心频率处有意信号(系统信号) 的磁场密度，第二个量值为有意信号在整个音频频段的频率响应，第三个量值是有意信号(系统信号)和无意信号(干扰信号)磁场场强之间的差值。HAC的参考标准是ANSI C63.19（美国无线通讯设备与助听器兼容性测量国家标准方法），根据标准定义用户通过对助听器抗干扰级别和相应的手机信号发射级别来判断某型号助听器与手机的兼容性。
Hearing Aid Compatibility (HAC) This is acertification that digital mobile phones will not interfere with nearby hearingAIDS before communication, that is, to test the electromagnetic compatibilityof mobile phones and hearing AIDS, which is divided into three parts: RF,T-coil and Volume control test. We need to test and evaluate three values, thefirst value is the magnetic field density of the intentional signal (systemsignal) at the center frequency of the audio frequency band, the second valueis the frequency response of the intentional signal over the entire audiofrequency band, and the third value is the difference between the magneticfield strength of the intentional signal (system signal) and the unintentionalsignal (interference signal). The reference standard of the HAC is ANSI C63.19(the National Standard Method for Measuring the compatibility of Wirelesscommunication equipment and hearing AIDS in the United States), according towhich the user defines the compatibility of a certain type of hearing aid andmobile phone through the anti-interference level of the hearing aid and thecorresponding mobile phone signal emission level.
整个测试过程是由以下程序完成，首先测量对助听器T-coil有用的音频频段的磁场场强。第二步测量无线信号磁场分量，用以确定来自无线通信设备显示器和电池电流通路等对音频频段有意信号所造成的影响。HAC测试要求被测手机的限值在 M3（测试结果是分 M1~M4)．除了HAC 之外，T-coil（音频测试）也必须要求限值在T3（测试结果是分T1~T4）范围内。
The entire test process is performed byfirst measuring the magnetic field strength in the audio frequency band usefulfor the hearing aid T-coil. The second step measures the magnetic fieldcomponent of the wireless signal to determine the effect of intentional signalsin the audio frequency band, such as the display of the wireless communicationdevice and the battery current path. The HAC test requires that the limit ofthe tested mobile phone is M3 (the test result is divided into M1~M4). Inaddition to the HAC, the T-coil (audio test) must also require a limit in theT3 (test results are divided into T1 to T4) range.
RFWD RF audio Interference level categoriesin logarithmic units
Emission categories <960MHz Limits for E-field emissions >960MHz Limits for E-field emissions
M1 50 to 55 dB (V/m) 40 to 45 dB (V/m)
M2 45 to 50 dB (V/m) 35 to 40 dB (V/m)
M3 40 to 45 dB (V/m) 30 to 35 dB (V/m)
M4 < 40 dB (V/m) < 30 dB (V/m)
Category Telephone parameters WD signal quality [(signal + noise) – to – noise ratio in decibels]
Category T1 0 dB to 10 dB
Category T2 10 dB to 20 dB
Category T3 20 dB to 30 dB
Category T4 > 30 dB
RF and T-coil test chart
通过将信恒检测BTF测试实验室的专业知识与手机和平板电脑技术的进步相结合，制造商可以生产出不仅提供无缝用户体验而且满足所有安全标准的设备。信恒检测BTF测试实验室与制造商之间的合作可确保对设备的 SAR、RF、T-Coil 和Volume control test合规性进行检测。
By combining the expertise of our BTF testlab with advances in mobile phone and tablet technology, manufacturers canproduce devices that not only provide a seamless user experience but also meetall safety standards. The collaboration between the BTF test lab and themanufacturer ensures that the device is tested for SAR, RF, T-Coil and volumecontrol compliance.
在信恒检测技术(深圳)有限公司，我们致力于为尊贵的客户提供最佳的服务体验，我们严谨的流程，加上我们注重服务细节的团队，确保您及时获得准确可靠的结果。我们诚邀您体验我们卓越的服务，并了解我们为什么我们是满足您所有测试需求值得信赖的选择，如果您有任何疑问，请随时与我们联系：电话:15549955225，邮箱: allen.qin@btf-lab.com
官网地址:http://www.btf-lab.com/。
At BTF Testing Lab (Shenzhen) Co., Ltd., we arecommitted to providing the best service experience for our valued customers.Our rigorous processes, coupled with our team that focuses on service details,ensure that you receive accurate and reliable results in a timely manner. Wesincerely invite you to experience our excellent service and understand why weare a trustworthy choice to meet all your testing needs. If you have anyquestions, please feel free to contact us at: phone: 15549955225, email:allen.qin@btf-lab.com
Official website address:http://www.btf-lab.com/ .
With the development of information technology,the public is increasingly concerned about the impact of electromagneticradiation from wireless communication terminals on human health, because mobilephones and tablets have become an indispensable part of our daily life, whetherit is to keep in touch with loved ones, keep in touch with work, or just enjoyentertainment on the road, these devices have truly revolutionized our way oflife. So it's important to make sure these devices are user-friendly and safeto use. This is where the BTF test lab and its expertise in SAR, RF, T-Coil andVolume control tests come into play.
SAR（比吸收率）测试主要针对便携式设备，例如手机、平板、手表和笔记本等等，SAR测试的意义是单位质量的人体细胞吸收或消耗的电磁功率。信恒检测BTF测试实验室专门从事 SAR 测试，实验室满足测试环境要求，以及设备齐全，确保设备遵守监管机构规定的安全限值。通过进行SAR测试，制造商可以保证其产品不会对用户造成任何健康风险。
SAR (specific absorption rate) testing ismainly for portable devices, such as mobile phones, tablets, watches andlaptops, etc. SAR testing is the meaning of the electromagnetic power absorbedor consumed per unit mass of human cells. Our BTF test laboratory specializesin SAR testing and is fully equipped to meet the requirements of the testenvironment, as well as to ensure that the equipment complies with the safetylimits set by the regulatory authorities. By conducting SAR testing,manufacturers can guarantee that their products do not pose any health risks tousers.
评估限值
Body Position SARValue(W/Kg)
GeneralPopulation/UncontrolledExposure Occupational/Controlled Exposure
Whole-BodySAR(averagedovertheentirebody) 0.08 0.4
Partial-BodySAR(averagedoverany1gramof tissue) 2.0 10.0
SARforhands,wrists,feetand ankles(averagedover any10gramsof tissue) 4.0 20.0
NOTE:General Population/Uncontrolled Exposure: Locations where there is the exposure of individuals who have no knowledge or control of their exposure. General population/uncontrolled exposure limits are applicable to situations in which the general public may be exposed or in which persons who are exposed as a consequence of their employment may not be made fully aware of the potential for exposure or cannot exercise control over their exposure. Members of the general public would come under this category when exposure is not employment- related; for example, in the case of a wireless transmitter that exposes persons in its vicinity. Occupational/Controlled Exposure: Locations where there is exposure that may be incurred by persons who are aware of the potential for exposure, In general, occupational/controlled exposure limits are applicable to situations in which persons are exposed as a consequence of their employment, who have been made fully aware of the potential for exposure and can exercise control over their exposure. This exposure category is also applicable when the exposure is of a transient nature due to incidental passage through a location where the exposure levels may be higher than the general population/uncontrolled limits, but the exposed person is fully aware of the potential for exposure and can exercise control over his or her exposure by leaving the area or by some other appropriate means.
SAR test chart
HAC（Hearing AidCompatibility）这是数字移动电话在进行通信时与附近的助听器之前会不会产生干扰的一种认证，即测试手机和助听器的电磁兼容，分为RF、T-coil和Volume control test三个部分。我们需要对三个量值进行测试和评估，第一个量值是在音频频段中心频率处有意信号(系统信号) 的磁场密度，第二个量值为有意信号在整个音频频段的频率响应，第三个量值是有意信号(系统信号)和无意信号(干扰信号)磁场场强之间的差值。HAC的参考标准是ANSI C63.19（美国无线通讯设备与助听器兼容性测量国家标准方法），根据标准定义用户通过对助听器抗干扰级别和相应的手机信号发射级别来判断某型号助听器与手机的兼容性。
Hearing Aid Compatibility (HAC) This is acertification that digital mobile phones will not interfere with nearby hearingAIDS before communication, that is, to test the electromagnetic compatibilityof mobile phones and hearing AIDS, which is divided into three parts: RF,T-coil and Volume control test. We need to test and evaluate three values, thefirst value is the magnetic field density of the intentional signal (systemsignal) at the center frequency of the audio frequency band, the second valueis the frequency response of the intentional signal over the entire audiofrequency band, and the third value is the difference between the magneticfield strength of the intentional signal (system signal) and the unintentionalsignal (interference signal). The reference standard of the HAC is ANSI C63.19(the National Standard Method for Measuring the compatibility of Wirelesscommunication equipment and hearing AIDS in the United States), according towhich the user defines the compatibility of a certain type of hearing aid andmobile phone through the anti-interference level of the hearing aid and thecorresponding mobile phone signal emission level.
整个测试过程是由以下程序完成，首先测量对助听器T-coil有用的音频频段的磁场场强。第二步测量无线信号磁场分量，用以确定来自无线通信设备显示器和电池电流通路等对音频频段有意信号所造成的影响。HAC测试要求被测手机的限值在 M3（测试结果是分 M1~M4)．除了HAC 之外，T-coil（音频测试）也必须要求限值在T3（测试结果是分T1~T4）范围内。
The entire test process is performed byfirst measuring the magnetic field strength in the audio frequency band usefulfor the hearing aid T-coil. The second step measures the magnetic fieldcomponent of the wireless signal to determine the effect of intentional signalsin the audio frequency band, such as the display of the wireless communicationdevice and the battery current path. The HAC test requires that the limit ofthe tested mobile phone is M3 (the test result is divided into M1~M4). Inaddition to the HAC, the T-coil (audio test) must also require a limit in theT3 (test results are divided into T1 to T4) range.
RFWD RF audio Interference level categoriesin logarithmic units
Emission categories <960MHz Limits for E-field emissions >960MHz Limits for E-field emissions
M1 50 to 55 dB (V/m) 40 to 45 dB (V/m)
M2 45 to 50 dB (V/m) 35 to 40 dB (V/m)
M3 40 to 45 dB (V/m) 30 to 35 dB (V/m)
M4 < 40 dB (V/m) < 30 dB (V/m)
Category Telephone parameters WD signal quality [(signal + noise) – to – noise ratio in decibels]
Category T1 0 dB to 10 dB
Category T2 10 dB to 20 dB
Category T3 20 dB to 30 dB
Category T4 > 30 dB
RF and T-coil test chart
通过将信恒检测BTF测试实验室的专业知识与手机和平板电脑技术的进步相结合，制造商可以生产出不仅提供无缝用户体验而且满足所有安全标准的设备。信恒检测BTF测试实验室与制造商之间的合作可确保对设备的 SAR、RF、T-Coil 和Volume control test合规性进行检测。
By combining the expertise of our BTF testlab with advances in mobile phone and tablet technology, manufacturers canproduce devices that not only provide a seamless user experience but also meetall safety standards. The collaboration between the BTF test lab and themanufacturer ensures that the device is tested for SAR, RF, T-Coil and volumecontrol compliance.
在信恒检测技术(深圳)有限公司，我们致力于为尊贵的客户提供最佳的服务体验，我们严谨的流程，加上我们注重服务细节的团队，确保您及时获得准确可靠的结果。我们诚邀您体验我们卓越的服务，并了解我们为什么我们是满足您所有测试需求值得信赖的选择，如果您有任何疑问，请随时与我们联系：电话:15549955225，邮箱: allen.qin@btf-lab.com
官网地址:http://www.btf-lab.com/。
At BTF Testing Lab (Shenzhen) Co., Ltd., we arecommitted to providing the best service experience for our valued customers.Our rigorous processes, coupled with our team that focuses on service details,ensure that you receive accurate and reliable results in a timely manner. Wesincerely invite you to experience our excellent service and understand why weare a trustworthy choice to meet all your testing needs. If you have anyquestions, please feel free to contact us at: phone: 15549955225, email:allen.qin@btf-lab.com
Official website address:http://www.btf-lab.com/ .
