YD/T 1644.2-2011: Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices-human models, instrumentation, and procedures. Part 2: Procedure to determine the specific absorption rate(SAR) for wireless communication devices used

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Scope

This Part is applicable to any wireless communication device capable of transmitting
electromagnetic fields (EMF) intended to be used at a position near the human body,
in the manner described by the manufacturer, with the radiating part(s) of the device
at distances up to and including 200 mm from a human body, i.e. when held in the
hand or in front of the face, mounted on the body, combined with other transmitting or
non-transmitting devices or accessories (e.g. belt-clip, camera or Bluetooth add-on),
or embedded in garments. For transmitters used in close proximity to the human ear,
the procedures of YD/T 1644.1 (IEC 62209-1.2005) are applicable.
This Part is applicable for radio frequency exposure in the frequency range of 30 MHz
to 6 GHz, and may be used to measure simultaneous exposures from multiple radio
sources used in close proximity to human body. Definitions and evaluation procedures
are provided for the following general categories of device types. body-mounted, body-
supported, desktop, front-of-face, hand-held, laptop, limb-mounted, multi-band, push-
to-talk, clothing-integrated. The types of devices considered include but are not limited
to mobile telephones, cordless microphones, auxiliary broadcast devices and radio
transmitters in personal computers.
This Part gives guidelines for a reproducible and conservative measurement
methodology for determining the compliance of wireless devices with the SAR limits.
Because studies suggest that exclusion of features to represent a hand in human
models constitutes a conservative case scenario for SAR in the trunk and the head, a
representation of a hand is not included if the device is intended to be used next to the
head or supported on or near the torso [73], [80]. This Part does not apply for
exposures from transmitting or non-transmitting implanted medical devices. This Part
does not apply for exposure from devices at distances greater than 200 mm away from
the human body.
This Part makes cross-reference to YD/T 1644.1 (IEC 62209-1.2005) where complete
clauses or subclauses apply, along with any changes specified.

Basic Data

Standard ID	YD/T 1644.2-2011 (YD/T1644.2-2011)
Description (Translated English)	Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices-human models, instrumentation, and procedures. Part 2: Procedure to determine the specific absorption rate(SAR) for wireless communication devices used
Sector / Industry	Telecommunication Industry Standard (Recommended)
Classification of Chinese Standard	M03
Classification of International Standard	33.100
Word Count Estimation	87,871
Date of Issue	2011-12-20
Date of Implementation	2012-02-01
Quoted Standard	YD/T 1644.1-2007; ISO/IEC 17025-1999
Adopted Standard	IEC 62209-2-2010, IDT
Regulation (derived from)	?MIIT Announcement 2011 No.43
Issuing agency(ies)	Ministry of Industry and Information Technology
Summary	This standard applies to anything that can emit electromagnetic fields (EMF). The manner described by the manufacturer and which is close to the human body emitting portion is not more than 200mm from the wireless communication device when in use. Whether handheld or placed on the face before the way, or body-worn, integrate other transmitting or not transmitting equipment or accessories (eg belt clip, camera or Bluetooth), or implanted in the way of clothing. Part of the equipment used in the ear close to the transmitter may YD/T 1644. 1 (IEC 62209-1-2005) is required to test use. This section applies to the operating frequency range of 30MHz ~ 6GHz RF irradiation can also be used to measure simultaneously irradiating a plurality of radio emission sources close to the body. This section gives the following definition of the type of device and the evaluation process: body-worn, body-supported, desktop, placed face former type, handheld, placed knee style, limb wearable, multi-band, walkie-talkie type, Clothing integrated. Device types include but are not limited to mobile phones, cordless telephone, auxiliary equipment and radio broadcasting transmitters within the PC. This section gives an assessment can be repeated and conservative methods of measurement of wireless devices and the SAR limit compliance. Existing studies show that because the human body model does not include the characterization part can be given manually conserved in the case of a human torso and head SAR evaluation, if the device is expected to be closer to the head or torso trunk support or use, the human body model in the evaluation section does not include the characterization of manpower [73], [80]. This section does not apply to exposure assessment transmit or not transmit medical implant devices.