80 MHz to
2.5 GHz
d =
P
E1
12
80 MHz
～
800 MHz
d =
P
E1
23
800 MHz
～
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).
b
Field strengths from fixed RF transmitters, as determined
by an electromagnetic site survey,
c
should be less than
the compliance level in each frequency range.
d
Interference may occur in the vicinity of equipment
marked with the followingsymbol:
NOTE1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE2 These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, objects and people.
a The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are 6,765 MHz to 6,795
MHz; 13,553 MHz to 13,567 MHz; 26,957 MHz to 27,283 MHz; and 40,66 MHz to 40,70 MHz.
b The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency
range 80 MHz to 2,5 GHz are intended to decrease the likelihood that mobile/portable communications
equipment could cause interference if it is inadvertently brought into patient areas. For this reason, an
additional factor of 10/3 has been incorporated into the formulae used in calculating the recommended
separation distance for transmitters in these frequency ranges.
c 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
Anesthetic Workstation is used exceeds the applicable RF compliance level above, The Anesthetic
Workstation should be observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as re-orienting or relocating the [ME EQUIPMENT or ME SYSTEM].
d Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3V/m.
Recommended separation distances between
portable and mobile RF communications equipment and the Anesthetic Workstation
The Anesthetic Workstation is intended for use in an electromagnetic environment in which radiated RF
disturbance are controlled. The customer or the user of The Anesthetic Workstation can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and The Anesthetic Workstation recommended below, according
to the maximum output power of the communications equipment.
Rated
Separation distance according to frequency of transmitter /m