TABLE 5 Recommended separation distances between portable and mobile RF communications equipment and
the Cook Doppler Blood Flow Monitor (DP-M350) for the Cook Doppler Blood Flow Monitors (DP-M350) that are
Recommended separation distances between portable and mobile RF Communications equipment and the
The Cook Doppler Blood Flow Monitor (DP-M350) is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customer or the user of the Cook Doppler Blood Flow Monitor (DP-M350)
can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the Cook Doppler Blood Flow Monitor (DP-M350) as recommended
below, according to the maximum output power of the communications equipment.
Rated maximum output
power of transmitter
W
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 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 aff ected by absorption and
refl ection from structures, objects, and people.
not Life Supporting
Cook Doppler Blood Flow Monitor (DP-M350) at 3Vrms
Separation distance according to frequency of transmitter
150 kHz to 80 MHz
0.12
0.34
1.7
3.7
11.7
m
80 MHz to 800 MHz
0.12
0.34
1.7
3.7
11.7
12
800 MHz to 2.5 GHz
0.23
0.74
2.3
7.4
23.3