Operation Manual

166
Table 3
Guidance and manufacturer’s declaration – electromagnetic immunity
The device is intended for use in the electromagnetic environment specified below.
The customer or the user of the device should assure that it is used in such an environment.
Immunity
test
IEC 60601
Test level
Compliance
level
Electromagnetic
environment - guidance
Conducted RF
IEC 61000-4-6
150 kHz to 80
MHz: 3 Vrms
6Vrms (in ISM
and amateur
radio bands)
80% Am at
1kHz
150 kHz to 80
MHz: 3 Vrms
6Vrms (in ISM
and amateur
radio bands)
80% Am at
1kHz
Portable and mobile RF communications
equipment should be used no closer to any
part of the device, including cables, than the
recommended separation distance calculated
from the equation appropriate for the frequency
of the transmitter. Recommended separation
distances: d = 0.35; d = 1.2
Radiated RF
IEC 61000-4-3
10V/m, 80%
Am
at 1kHz
10V/m, 80%
Am
at 1kHz
80 MHz to 800
MHz:
d = 1.2
800 MHz to
2.7 GHz:
d = 2.3
where, P is the maximum
output power rating of the
transmitter in watts (W) accor-
ding to the transmitter manu-
facturer, 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 symbo:
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 device is used exceeds the applicable RF compliance
level above, the device should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as re-orienting or relocating the device.
b) Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3V/m.
EMC GUIDANCE