USER
MANUAL
33
51331-006
Immunity Test
IEC 60601
Test Level
Compliance
Level
Electromagnetic Environment Guidance
RF Common
mode/
Conducted
Susceptibility
IEC 61000-4-6
Radiated RF
Electromagnetic
Fields
IEC 61000-4-3
3 Vrms
0.15 to 80 MHz
6V in ISM Bands
3 V/m
80 MHz to 2.5 GHz
3 Vrms
0.15 to 80 MHz
3 V/m
80 MHz to 2.5 GHz
See Note d.
Portable and mobile RF communications equipment
should be used no closer to any part of the Photic
Stimulator, including cables than the recommended
separation distance calculated from the equation
applicable to the frequency of the transmitter.
Recommended separation distance
Where P is the maximum output power rating of the
transmitter in watts (W) according to the 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 strength 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 Photic Stimulator is used exceeds the applicable RF compliance level above, the Photic Stimulator should be
observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as re-orienting or
relocating the Photic Stimulator.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
c The Photic Stimulator does not contain magnetic components and is not susceptible to power frequency magnetic field inter-ference.
d The conditions of intended use justify lower immunity test levels. The hazards and risk analysis associated with these lower limits have
been documented in the Risk Management file.
Appendix 3
