CONTEC MEDICAL SYSTEMS EKG6012, Руководство пользователя, Страница: 74 / 76

EKG6012
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 modulation, 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:
P
d
6
E
=
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
⚫ 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.
⚫
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.
⚫
Use of accessories, transducers and cables 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.”
⚫
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.
⚫
Active medical devices are subject to special EMC precautions and they must be
installed and used in accordance with these guidelines.
Note
：
⚫
The EMISSIONS characteristics of this equipment make it suitable for use in
industrial areas and hospitals (CISPR 11 class A). If it is used in a residential
environment (for which CISPR 11 class B is normally required) this equipment
might not offer adequate protection to radio-frequency communication services. The
user might need to take mitigation measures, such as relocating or re-orienting the
equipment.