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NOTE If necessary to achieve the IMMUNITY TEST LEVEL, the distance between the transmitting antenna and the ME EQUIPMENT or
ME SYSTEM may be reduced to 1 m. The 1 m test distance is permitted by IEC 61000-4-3.
a) For some services, only the uplink frequencies are included.
b) The carrier shall be modulated using a 50 % duty cycle square wave signal.
c) As an alternative to FM modulation, 50 % pulse modulation at 18 Hz may be used because while it does not represent actual modu-
lation, it would be worst case.
The MANUFACTURER should consider reducing the minimum separation distance, based on RISK MANAGEMENT, and using higher
IMMUNITY TEST LEVELS that are appropriate for the reduced minimum separation distance. Minimum separation distances for higher
IMMUNITY TEST LEVELS shall be calculated using the following equation:
Where P is the maximum power in W, d is the minimum separation distance in m, and E is the IMMUNITY TEST LEVEL in V/m.
Warning
1) Don't near active HF SURGICAL EQUIPMENT and the RF shielded room of an ME
SYSTEM for magnetic resonance imaging, where the intensity of EM DISTURBANCES is
high.
2) Use of this equipment adjacent to or stacked with other equipment should be avoided
because it could result in improper operation. If such use is necessary, this equipment
and the other equipment should be observed to verify that they are operating normally.
3) Use of accessories other than those specified or provided by the manufacturer of
this equipment could result in increased electromagnetic emissions or decreased
electromagnetic immunity of this equipment and result in improper operation."
4) Portable RF communications equipment (including peripherals such as antenna cables
and external antennas) should be used no closer than 30 cm (12 inches) to any part of
the device including cables specified by the manufacturer. Otherwise, degradation of the
performance of this equipment could result.
5) Active medical devices are subject to special EMC precautions and they must be
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