PHILIPS Respironics Actiwatch 2, Руководство техника

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9
Guidance and Manufacturer’s Declaration – Electromagnetic Immunity
This Device is intended for use in the electromagnetic environment specified below. The user of the Device should assure that it is used in such
an environment.
Immunity Test IEC 60601 Test Level Compliance Level Electromagnetic Environment - Guidance
Portable and mobile RF communications equipment should be used no
closer to any part of the Device, including cables, than the recommended
separation distance calculated from the equation applicable to the
frequency of the transmitter.
Recommended Separation Distance
Conducted RF
IEC 61000-4-6 3 Vrms
150 kHz to 80 MHz 3 V
d = 1.2√P
Radiated RF
IEC 61000-4-3 3 V/m
80 MHz to 2.5 GHz 3 V/m
d = 1.2√P 80 MHz to 800 MHz
d = 2.3√P 800 MHz to 2.5 GHz
where P is the maximum output power rating of the transmitter in watts
(W) according to the transmitter manufacturer and d is the recom-
mended separation distance in meters (m).
Field strengths from fixed RF transmitters, as determined by an electro-
magnetic site survey,
a
should be less than the compliance level in each
frequency range.
b
Interference may occur in the vicinity of equipment marked with the
following symbol:
Note 1: At 80 MHz and 800 MHz, the higher frequency range applies.
Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures,
objects and people.
a. Field strength from fixed transmitters such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur radio,
AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic environment
due to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field strength in the location in which
the Device is used exceeds the applicable RF compliance level above, the Device should be observed to verify normal operation. If abnor-
mal performance is observed, additional measures may be necessary, such as re-orienting or relocating the Device.
b. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.