Daiwha Meditom DT-400S, User Manual

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11 . Guidance and manufacture’s declaration on electromagnetic emissions59
Recommended separation distances between portable and mobile RF
communications equipment and the DT-400S/300S
There is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the DT-400S/300S can help Prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the DT-400S/300S as recommended below, according to the maximum
output power of the communications equipment.
Separation distance according to frequency of transmitter [m]
IEC 60601-1-2
Frequency of
Transmitter
Equation
Rated maximum
output power of
transmitter
[W]
150kHz to 80MHz
V
1
=3Vrms
Separation Distance
(meters)
80MHz to 800MHz
E
1
=3V/m
Separation Distance
(meters)
800MHz to 2.5GHz
E
1
=3V/m
Separation Distance
(meters)
0.01 0.116 0.1166 0.2333
0.1 0.368 0.3687 0.7378
1 1.166 1.1660 2.3333
10 3.687 3.6872 7.3785
100 11.660 11.6600 23.333
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 80MHz and 800MHz, 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.
a Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless)
telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast
cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due to
fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field
strength in the location in which the DT-400S/300S is used exceeds the applicable RF compliance
level above, the DT-400S/300S should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as re-orienting or relocating
the DT-400S/300S.
b Over the frequency range 150kHz to 80MHz, field strengths should be less than [V1] V/m.
Immunity and Compliance Level
Immunity test IEC 60601-1-2
Test Level
Actual Immunity Level Compliance Level
Conducted RF
IEC 61000-4-6
3Vrms
150kHz to 80MHz
3Vrms 3Vrms
Radiated RF 3Vrms 3V/m 3V/m