Invacare Birdie Manuel D'utilisation page 50

Invacare® Birdie®
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 patient lift is used exceeds the applicable RF compliance level above, the
patient lift should be observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as reorienting or relocating the patient lift.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than [V1] V/m.
At 80 MHz and 800 MHz, the higher frequency range applies.
Recommended separation distances between portable and mobile RF communications equipment and the patient lift
The patient lift is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The
customer or the user of the patient lift can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the patient lift as recommended below, according
to the maximum output power of the communications equipment
Rated maximum output
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 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.
50
Separation distance according to frequency of transmitter [m]
150 kHz to 80 MHz
0.12
0.37
1.17
3.69
11.67
80 MHz to 800 MHz
0.12
0.37
1.17
3.69
11.67
800 MHz to 2,5 GHz
0.23
0.74
2.33
7.38
23.33
1575480-E