10. EMC - Related Notication
1212
Warning: Medical electrical equipment needs special precautions regarding EMC and needs
to be installed according to the EMC (Electro Magnetic Compatibility) information provided.
Careful consideration of this information is essential when stacking or collocating
equipment and when routing cables and accessories.
Warning: RF mobile communications equipment can effect medical electrical equipment.
Recommended separation distances between portable and mobile RF communications equipment and the
Steiss™ Universal Therapy System (UTS)
The Steiss™ Universal Therapy System (UTS) is intended for use in an electromagnetic environment (for home
healthcare) in which radiated RF disturbances are controlled. The customer or the user of the Steiss™ Universal
Therapy System (UTS) can help prevent electromagnetic interference by maintaining a minimum distance between
portable and mobile RF communications equipment (transmitters) and the Steiss™ Universal Therapy System (UTS)
as recommended below, according to the maximum output power of the communications equipment.
Rated Maximum output
power of transmitter
W
Separation distance according to frequency of transmitter
(metres)
150 kHZ to 80 MHz
d = 1,2 √P
80 MHz to 800 MHz
d = 1,2 √P
800 MHz to 2.5 GHz
d = 2,3 √P
0,01 0,12 0,12 0,23
0,1 0,38 0,38 0,73
1 1,2 1,2 2,3
10 3,8 3,8 7,3
100 12 12 23
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres
(m) 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.
NOTE 1: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reection from structures, objects, and people.
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