Page 68 - Abbott

Table 16. Electromagnetic Immunity

Guidance and manufacturer’s declaration – electromagnetic immunity
The electronics unit is intended for use in the electromagnetic environment specified below. The customer or the user of the
electronics unit should assure that it is used in such an environment.
Immunity Test IEC 60601 Compliance level Electromagnetic environment - guidance
Test level
the transmitter.

Recommended separation distance

80 MHz to 800 MHz

800 MHz to 2.7 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,
should be less than the compliance level in each
frequency range .
16
Interference may occur in the vicinity of
equipment marked with the following symbol:

Electromagnetic site survey- Field strengths 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 electronics unit is used exceeds the applicable RF compliance level above, the
electronics unit should be observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as reorienting or relocating the electronics unit.

Table 17. Recommended separation distances between portable and mobile RF communications equipment and the electronics
unit
The electronics unit is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The
customer or the user of the electronics unit can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the electronics unit as recommended below,
according to the maximum output power of the communications equipment.
Rated Maximum output Separation distance according to frequency of transmitter
17
power of transmitter (W)
150 kHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 2,7 GHz
18
d = 1.2 √P d = 1.2 √P d = 2.3 √P
0.01 0.12 m 0.12 m 0.23 m
0.1 0.38 m 0.38 m 0.73 m
1 1.20 m 1.20 m 2.30 m
10 3.79 m 3.79 m 7.27 m
100 12.00 m 12.00 m 23.00 m
For transmitters rated at a maximum output not listed above, the recommended separation distance (d) in meters can be estimated
using the equation applicable to the frequency of the transmitter, where P is the maximum output power rating of the transmitter in
watts (W) according to the transmitter manufacturer.
For two electronics units operating simultaneously and in proximity test results indicate that the separation distance should be
greater than 4 meters (13 feet and 2 inches).

16 Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
17 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects, and people.
18 At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.

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