Dräger Resuscitaire WBR82 Instructions For Use Manual page 46

PROPRIETARY AND CONFIDENTIAL DRAFT 5 Feb 04
Recommended Separation Distances Between Portable and Mobile RF Communications
The Resuscitaire Radiant Warmers are intended for use in the electromagnetic environment in which radiated RF
disturbances are controlled. The customer or user of the unit can help prevent electromagnetic interference (EMI)
by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters)
and the unit as recommended, according to the maximum output power of the communications equipment.
Rated Maximum
Output Power of
the Transmitter
(W)
0.01 W
0.1 W
1 W
10 W
100 W
For transmitters rated at a maximum output not listed above, the recommended separation distance (d)
in meters (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 man-
ufacturer.
NOTE:
At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE:
The industrial, scientific, and medical (ISM) bands between 150 kHz and 80 MHz are 6765 MHz to
6795 MHz; 13553 MHz to 13567 MHz; 26957 MHz to 27283 MHz; and 4066 MHz to 4070 MHz.
NOTE:
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:
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects, and people.
2 - 30
Equipment and the Resuscitaire Radiant Warmers
Separation Distance According to the Frequency of the Transmitter (m)
150 kHz to
150 kHz to 80 MHz
80 MHz Outside
ISM Bands
d = 1.2 P
0.12 m 0.12 m
0.38 m 0.38 m
1.2 m 1.2 m
3.8 m 3.8 m
12 m 12 m
in ISM Bands
d = 1.2 P
0.12 m
0.38 m
1.2 m
3.8 m
12 m
80 MHz to 800 MHz to
800 MHz
d = 1.2 P
0.23 m
0.73 m
2.3 m
7.3 m
23 m
2.5 GHz
d = 2.3 P