Recommended separation distance between portable and mobile RF communications
equipment and the M-550 Digital Floor Scale
The M-550 is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the M-550 can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters)
and the M-550 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 m
150kHz to 80MHz
d = 1,2
√
P
80MHz to 800MHz
d = 1,2√
P
800MHz to 2,5GHz
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 rating of the transmitter in watts (w) according to the transmitter manufacturer.
NOTE1) At 80 MHz and 800 MHz, the separation distance for the high frequency range applies.
NOTE2) These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
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Summary of Contents for M-550BT
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