Recommended separation distances between portable and mobile RF communications equipment and the SonoOne device
The SonoOne device is intended for use in an electromagnetic environment in which RF disturbances are controlled. The customer or the user of the SonoOne
device can thus help to prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the SoleoOne device – depending on the output power of the communications equipment as indicated below.
Rated power of the transmitter
W
Separation distance depending on the frequency of transmitter
m
150 KHz to 80 MHz
d = 1.17 √P
80–800 MHz
d = 0.35 √P
800 MHz to 2.5 GHz
d = 0.7 √P
0.01 0.12 0.04 0.07
0,1 0.37 0.11 0,22
1 1,17 0,35 0,7
10 3,70 1,11 2,21
100 11,67 3,5 7,0
determined using the equation given for the corresponding column, where P is the maximum rated power of the transmitter in watts (W) in accordance with
the manufacturer of the transmitter.
NOTE 1: At 80 and 800 MHz, the higher frequency range applies.
One device is used exceeds
the above compliance level, the SonoOne device must be monitored to verify normal operation. If abnormal performance is observed, additional measures
may be necessary, such as the realignment or relocation of the SonoOne device.
Guidelines and manufacturer‘s declaration - electromagnetic immunity
The SonoOne
One device should
ensure that it is used in such an environment.
Immunity tests IEC 60601 - Test Level Compliance level Electromagnetic environment - Guidelines
Conducted RF disturbance variables
in accordance with IEC 61000-4-6
Radiated RF disturbance variables in
accordance with IEC 61000-4-3
3 V
RMS
150 kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
3 V
RMS
150 kHz to 80 MHz
10 V/m
80 MHz to 2.5 GHz
Portable and mobile RF communications equipment should not
be used any closer to the SonoOne including cables, than the
recommended separation distance calculated using the equation
relevant for the transmission frequency.
Recommended separation distance:
d = 1.17 √P
d = 0.35 √P for 80MHz to 800 MHz
d = 0.7 √P for 800 MHz to 2.5 GHz
where P is the power rating of the transmitter in watts
(W) according to the transmitter manufacturer and d is the
recommended separation distance in metres (m).
In accordance with an on-site investigationa , for all frequencies,
than the coincidence levelb.
Errors may occur in the vicinity of devices marked with the
following symbol:
NOTE 1: At 80 Hz and 800 MHz, the higher frequency range applies.
Key features of the SonoOne
16
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