Omron HEM-9200T Instruction Manual page 39

Recommended separation distance between portable and mobile RF communications
OMRON BPM including AC-adapter is intended for use in an electromagnetic environment in
which radiated RF disturbances are controlled. The customer or the user of this OMRON BPM
including AC-adapter can help prevent electromagnetic interference by maintaining a minimum
distance between portable and mobile RF communications equipment (transmitters) and the OMRON
BPM including AC-adapter as recommended below, according to the maximum output power of the
communications equipment.
Output Power of Transmitter in Watt
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation
distance d in meters (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: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
Note: These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects, and people.
equipment and the OMRON BPM including AC-adapter
Separation distance according to frequency of
transmitter in meter
150 kHz to
80 MHz to 800 MHz
80 MHz
d = 1.2
d = 1.2 P
0.12
0.38
1.2
3.8
12
39
800 MHz to 2.5GHz
P
0.12
0.38
1.2
3.8
12
d = 2.3
P
0.23
0.73
2.3
7.3
23