TransCore Amtech IT2200, Инструкция по установке, обслуживанию и ремонту

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IT2200 Reader System with Multimode Capability Installation & Maintenance/Service Guide
1-6
U.S. Licensing
IT2200 Reader System with Multimode Capability users in the U.S. must obtain a
license from the Federal Communications Commission (FCC). The authorized fre-
quency bands in the U.S. are 902 to 904 and 909.75 to 921.75 MHz.
The user is responsible for filing the FCC license according to FCC regulations, but
the Amtech
®
dealer should provide assistance and support as necessary to complete
these forms.
An FCC license provides the user with the legal authorization to operate the IT2200
Reader System with Multimode Capability on the licensed frequencies at the site
specified in the license. Only an authorized installer or service technician can set the
IT2200 series of readers’ frequency to that specified in the FCC site license.
The FCC license also provides the user with protection and authorization to maintain
the system should any other RF identification product be used in the licensed area
after the IT2200 equipment is installed.
Health Limits
Within the United States, environmental guidelines regulating safe exposure levels are
issued by the Occupational Safety and Health Administration (OSHA).
Section 1910.97 of OSHA Safety and Health Standards 2206 legislates a maximum
safe exposure limit of 10 milliwatts per square centimeter (mW/cm
2
) averaged over 6
minutes at both 915 and 2450 MHz.
Although not binding, other organizations such as the American National Standards
Institute (ANSI) have issued similar guidelines that are more restrictive than the
OSHA limits (ANSI C95.1). ANSI guidelines recommends the following maximum
safe power density in mW/cm
2
:
Thus, the maximum safe power density at 915 MHz is 0.61mW/cm
2
. The power limit
is a 6-minute average. At 915 MHz, Exclusion 4.2(2) provides an exclusion of the lim-
its if transmitted power is 7 W or less.
The RF power density generated by Amtech
®
equipment was calculated using an
antenna gain that is equivalent to that typically used in an IT2200 installation. At 1.0
W transmitted power and a distance of 1 m (3 ft) from the antenna, the maximum
power density recorded was 0.16mW/cm
2
. Personnel must remain at least 0.46 m
(1.5 ft) from antennas when system is operating.
The data confirm that the Amtech
®
system effectively meets OSHA requirements and
does not represent an operating hazard to either the general public or maintenance per-
sonnel.
Frequency (in MHz)
1500
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