21
22
Guidance and manufacturer’s declaration-electromagnetic immunity
The
ETH-102
is intended for use in the electromagnetic environment specified below.
The customer or the user of the
ETH-102
should assure that is used in such and environment.
Immunity test
IEC 60601 test level
Compliance level
Electromagnetic environment-guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
3 Vrms
150 KHz to 80 MHz
3 V/m
80MHz to 2,5 GHz
Not applicable
3 V/m
Portable and mobile RF communications
equipment should be used no closer to any part
of the
ETH-102
including cables, than the
recommended separation distance calculated from
the equation applicable to the frequency of the
transmitter.
Recommended separation distance:
d = 1,2
P
d = 1,2
P
80MHz to 800 MHz
d = 2,3
P
800MHz to 2,5 GHz
Where
P
is the maximum output power rating of the
transmitter in watts (W) according to the transmitter
manufacturer and
d
is the recommended separation
distance in metres (m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey,
a
should be less than the compliance level in each
frequency range.
b
Interference may occur in the vicinity of equipment
marked with the following symbo
NOTE1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE2 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
ETH-102
is used exceeds the applicable RF compliance level above, the
ETH-102
should be observed to verify normal operation. If abnormal performance is observed, additional measures my be
necessary, such as re-orienting or relocating the
ETH-102
.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be les than 3 V/m.
Recommended separation distance between
portable and mobile RF communications equipment and the
ETH-102
The
ETH-102
is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled.
The customer or the user of the
ETH-102
can help prevent electromagnetic interference by maintaining a minimum
distance between portable and mobile RF communications equipment (transmitters) and the
ETH-102
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 =1,2
P
80 MHz to 800 MHz
d =1,2
P
800 MHz to 2,5 GHz
d =2,3
P
3
2
,
0
2
1
,
0
A
/
N
1
0
,
0
3
7
,
0
8
3
,
0
A
/
N
1
,
0
3
,
2
2
,
1
A
/
N
1
3
,
7
8
,
3
A
/
N
0
1
3
2
2
1
A
/
N
0
0
1
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.
NOTE1 At 80 MHz and 800 MHz, the separation di stance for the higher frequency range applies.
NOTE2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects and people.
