Select User’s Manual
42
Select User’s Manual
43
Specifications
Specifications
Guidance and manufacturer’s declaration – electromagnetic immunity
The Empi Select is intended for use in the electromagnetic environment specified below. The customer or the
user of the Empi Select should assure that it is used in such an environment.
Immunity test
IEC 60601
test level
Compliance level Electromagnetic environment -
guidance
Portable and mobile RF
communications equipment
should be used no closer to any
part of the Empi Select, including
cables, than the recommended
separation distance calculated
from the equation applicable to
the frequency of the transmitter.
Recommended separation
distance
Conducted RF
IEC 61000-4-6
3 Vrms
150 kHz to 80 MHz
3V
d
= [3.5]
P
V1
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to 2.5 GHz
3 V/m
d
= [3.5]
P
80 MHz to 800 MHz
E
1
d
= [7]
P
800 MHz to 2.5 GHz
E
1
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 meters (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 symbol:
NOTE 1 At 80 MHz and 800 MHz, 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 Empi Select is used
exceeds the applicable RF compliance level above, the Empi Select should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or
relocating the Empi Select.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended separation distances between portable and mobile RF communications equipment and the
Empi Select
The Empi Select is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the Empi Select can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and
the Empi Select as recommended below
Rated maximum output
power of transmitter
W
Separation distance according to frequency of transmitter
m
150 kHz to 80 MHz
d
= [3.5]
P
V1
80 MHz to 800 MHz
d
= [3.5]
P
E1
800 MHz to 2.5 GHz
d
= [7]
P
E1
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
23
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 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.
user_manual_NEW_BH_edit_r5.indd 42-43
3/3/08 2:08:49 PM
