Continuum User’s Manual 45
Guidance and Manufacturer’s Declaration–Electromagnetic
Immunity (continued)
The Empi Continuum is intended for use in the electromagnetic environment
specified in the table below. The user of the Empi Continuum 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 Continuum, 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
3 V
d = [3.5]
√P
3
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
3
d = [7]
√P
800 MHz to 2.5 GHz
3
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 Continuum is used exceeds the applicable RF
compliance level above, the Empi Continuum should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as reorienting
or relocating the Empi Continuum.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3V/m.
Product Information (Clinician)
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