| Specific
Absorption Rate - SAR |
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MET
Performs Specific Absorption Rate
(SAR) Testing to all US and International
SAR Standards.
MET employs a DASY4 professional
system with the newest RX 90 robot
to our already extensive, globally
recognized, Specific Absorption
Rate (SAR) testing capabilities.
The
SAR chamber has a IXA-020
‘Fast’ Amplifier for the
SARA2 system. This will allow
SAR scans to be completed in half
the time. With
the addition of the newly released
EX electric-field probe, MET can
now measure SAR up to 6GHz with
greatly reduced uncertainty.
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With MET's Index SAR system already in place,
and the addition of the DASY4, MET
can test virtually any wireless device.
MET
as a TCB, can currently
approve handheld Cellular/PCS phones and
other transmitters that have been tested
in accordance with FCC procedure OET65 Supplement
C, from June 2001.
Parameters
that can affect SAR include:
- Types
of radio service (cellular, PCS, LMR,
WLAN, etc.)
- Types
of modulations (CDMA, GMSK, TDMA, AMPS,
etc.)
- Physical
orientation to person (held-to-ear,
held-to-face, belt-clip, Lap-held, etc.)
- RF
power level (in Watts or mW)
- Changes
to transmitter, antenna (extracted/retracted)
or accessories (clips, batteries, etc.)
SAR
Testing is Required for More than Just Cell
Phones
FCC classifies a wide range of standalone
independently operated portable transmitters
as being potential candidates for SAR testing.
Laptop computers, for example, may required
SAR testing. Handsets, pagers, and other
devices that are worn on a belt can also
require SAR testing. When portable transmitter
antennas and radiating structures are less
than 20 cm from persons, except extremities
(hands, wrist, feet and ankles), and depending
on the device’s frequency and threshold
levels, SAR testing may in fact be required.
MET's SAR capabilities include handheld
and body worn devices such as Cellular/PCS
GSM/DCS CDMA/GMSK/TDMA/AMPS phones, PDA's,
Laptops, held-to-face walkie-talkies, W-LAN
(2.4GHz and 5.7GHz), UNII, U-PCS, as well
as many other domestic and international
devices.
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SAR Testing for Europe
European RF Safety Harmonized standards
are used for SAR devices:
EN 50360:2001 Product standard to demonstrate
the compliance of mobile phones with the
basic restrictions related to human exposure
to electromagnetic fields (300 MHz - 3 GHz)
EN 50364:2001 Limitation of human exposure
to electromagnetic fields from devices operating
in the frequency range 0 Hz to 10 GHz, used
in Electronic Article Surveillance (EAS),
Radio Frequency Identification (RFID) and
similar applications
EN 50371:2002 Generic standard to demonstrate
the compliance of low power electronic and
electrical apparatus with the basic restrictions
related to human exposure to electromagnetic
fields (10 MHz - 300 GHz) - General public
EN 50385:2002 Product standard to demonstrate
the compliance of radio base stations and
fixed terminal stations for wireless telecommunication
systems with the basic restrictions or the
reference levels related to human exposure
to radio frequency electromagnetic fields
(110 MHz - 40 GHz) - General public
As a Designated R&TTE CAB, which is a Notified
Body, MET is authorized to review compliance
in accordance with these standards as well
as any other standards that we feel are
appropriate.
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