FRESENIUS MEDICAL CARE
MEDICAL TREATMENT CHAIR
INSTRUCTION MANUAL - T688B Series
Page 20 of 20
IFU T688B V1 May 2019
Guidance and MA
NUFACTURER’S declaration – electromagnetic IMMUNITY
Recommended separation distances between
portable and mobile RF communications equipment and the T688B Series Chair
The
T688B Series Chair is
intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the [ME EQUIPMENT or ME SYSTEM] can
help prevent electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and the
T688B Series Chair
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
150 kHz to 80 MHz
80 MHz to 800 MHz
800 MHz to 2,5 GHz
0,01
0.12
0.12
0.23
0,1
0.37
0.37
0.74
3.691
1.17
1.17
2.33
1011.67
3.69
3.69
7.38
100
11.67
11.67
23.33
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 reflection from structures, objects and people.
