Recommended Separation Distances - AngelSounds JPD-100S mini Manual De Instrucciones

Fetal Doppler should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be
necessary, such as re-orienting or relocating the Fetal Doppler.
b Over the frequency range 150 kHz to 80 MHz, field strengths
should be less than 3 V/m.

1.4 Recommended Separation Distances

Recommended separation distances between portable and
mobile RF communications equipment and the Fetal Doppler.
The Fetal Doppler is intended for use in an electromagnetic
environment in which radiated RF disturbances are controlled.
The customer or the user of the Fetal Doppler can help prevent
electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment
(transmitters) and the Fetal Doppler 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 metres (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.
Separation distance according to frequency of
transmitter
（m）
150 kHz to 80
MHz
0.12
0.38
1.2
3.8
12
80 MHz to
800 MHz
0.12
0.38
1.2
3.8
12
21
800 MHz to 2.5
GHz
0.23
0.73
2.3
7.3
23