3M Littmann 3200 Manual De Instrucciones página 25

Declaration – electromagnetic immunity - continued
The 3M™ Littmann® Electronic Stethoscope Model 3200, is intended for use in the electromagnetic environment
specified below. The customer or the user of Model 3200 should assure that it is used in such an environment.
Immunity test IEC 60601 test level
Conducted RF 3 Vrms
IEC 61000-4-6 150 kHz to 80 MHz
Radiated RF 3 V/m
IEC 61000-4-3 80 MHz to 2.5 GHz
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.
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile
a
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 Model 3200 is used exceeds the applicable RF
compliance level above, the Model 3200 should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as re-orienting or relocating the Model 3200.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
b
Compliance level Electromagnetic environment –guidance
Portable and mobile RF communications equipment
should be used no closer to any part of the Model
3200, including cables, than the recommended
separation distance calculated from the equation
applicable to the frequency of the transmitter.
Recommended separation distance:
Not applicable d = 1,2 √ P
3 V/m d = 1,2 √ P 80 MHz to 800 MHz
80 MHz to 2.5 GHz 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 recommended separation
distance in meters (m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey,
be less than the compliance level in each frequency
range,
of equipment marked with the following symbol:
23
Interference may occur in the vicinity
b
should
a