27
5.3.3 Recommended Separation Distance
The CProbe Wireless Probe Type Ultrasound Scanner is intended for use in an electromagnetic
environment in which radiated RF disturbance are controlled. The customer or the user of the CProbe
Wireless Probe Type Ultrasound Scanner can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the the CProbe Wireless Probe Type Ultrasound Scanner 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)
150 kHz to 80
MHz
d = [
1
5
.
3
V
]
P
80 MHz to 800 MHz
d = [
1
5
.
3
E
]
P
800 MHz to 2.5 GHz
d = [
1
7
E
]
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 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 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.
