Invacare SoftCloud Ace User Manual page 34

SoftCloud® Ace, SoftCloud® Pro
NOTE 1: At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from
structures, objects and people.
a) 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 mattress system is used exceeds the applicable RF compliance level above, the mattress system should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the mattress system.
b) Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended separation distances between portable and mobile RF communications equipment and the mattress system Alternating
Control Unit
The mattress system is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer
or the user of the mattress system can help prevent electromagnetic interference by maintaining a minimum distance between portable
and mobile RF communications equipment (transmitters) and the mattress system 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
34
Separation distance according to frequency of transmitter (m)
150 kHz to 80 MHz
d = 1.167√P
0.117
0.369
1.167
3.689
11.667
80 MHz to 800 MHz
d = 1.167√P
0.117
0.369
1.167
3.689
11.667
800 MHz to 2.5 GHz
d = 2.333√P
0.233
0.738
2.333
7.379
23.333
1630732-B