User manual

Chapter 7 EMC Information
51
Guidance and Manufacturer’s Declaration - Electromagnetic Immunity – This device is intended for
use in the electromagnetic environment specied below. The user of this device should make sure
it is used in such an 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
80 MHz to 2.5 GHz
3 Vrms
3 V/m
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 applicable to the frequency of the transmitter.
Recommended separation distance
d = 1.2
d = 1.2 80 MHz to 800 MHz
d = 2.3
800 MHz 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 meters (m).
Field strengths from xed 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 reection from
structures, objects, and people.
a Field strengths from xed 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 xed RF transmitters, an electromagnetic site survey should be considered. If the measured eld 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, the eld strengths should be less than 3 V/m.