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Recommended Separation Distances for LIFE SUPPORT Equipment between portable and mobile RF
communications equipment and the Alaris® Gateway Workstation
The Workstation is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled .
The user of the Workstation can help prevent electromagnetic interference by maintaining a minimum distance between portable
and mobile RF communications equipment (transmitters) and the Workstation as recommended below, according to the maximum
output power of the communications equipment .
Rated Maximum Output
Power of Transmitter
W
0 .01
0 .1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres (m) can be
determined 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 .
Note 1—At 80 MHz and 800 MHz, the separation distance for the higher frequency range apply .
Note 2—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 .
Note 3—An additional factor of 10/3 is used in calculating the recommended separation distance for transmitters in the ISM
frequency bands between 150 kHz and 80 MHz and in the frequency range 80 MHz to 2 .5 GHz to decrease the likelihood that mobile/
portable communications equipment could cause interference if it is inadvertently brought into patient areas .
Note 4—These guidelines may not apply in all situations . Electromagnetic propagation is affected by absorption and reflection from
structures, objects, and people .
Separation Distance According to Frequency of Transmitter
150 kHz to 80 MHz
150 kHz to 80 MHz
Outside ISM bands
3 .5
d = [------] √P
V1
0 .03
0 .11
0 .35
1 .11
3 .50
1000SM00015 Issue 8
m
80 MHz to 800 MHz
In ISM bands
12
d = [------] √P
d = [ ------] √P
V2
0 .12
0 .38
1 .20
3 .80
12 .00
61/72
Alaris® Gateway Workstation
800 MHz to 2 .5 GHz
12
23
d = [------] √P
E1
E1
0 .12
0 .23
0 .38
0 .73
1 .20
2 .30
3 .80
7 .28
12 .00
23 .00
Appendix
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