Daiwha Meditom DT-400S User Manual page 59

Recommended separation
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]
Frequency of
Transmitter
Equation
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 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
Conducted RF
IEC 61000-4-6
Radiated RF
11. Guidance and manufacture's declaration on electromagnetic emissions59
distances
IEC 60601-1-2
150kHz to 80MHz
V =3Vrms
1
Separation Distance
(meters)
0.116
0.368
1.166
3.687
11.660
IEC 60601-1-2 Actual Immunity Level
Test Level
3Vrms
150kHz to 80MHz
3Vrms
between portable
80MHz to 800MHz
E =3V/m
1
Separation Distance
(meters)
0.1166
0.3687
1.1660
3.6872
11.6600
3Vrms
3V/m
and mobile RF
800MHz to 2.5GHz
E =3V/m
1
Separation Distance
(meters)
0.2333
0.7378
2.3333
7.3785
23.333
Compliance Level
3Vrms
3V/m