APPENDIX 3 - EMC GUIDANCE & MANUFACTURER’S DECLARATION
37 MODEL 260 INSTRUCTION FOR USE
Electromagnetic environment
– guidance
Voltage dips, short interruptions
and voltage variations on power
supply input lines (100V/60Hz &
240V/50Hz)
IEC 61000-4-11
0% U
T
(100% dip in U
T
) for
0.5 cycle
0% U
T
(100% dip in U
T
) for 1
cycle
40% U
T
(60% dip in U
T
) for 5
cycles
70% U
T
(30% dip in U
T
) for
500ms
0% U
T
(100% dip in U
T
) for 5
sec
0% U
T
100% dip in U
T
) for 0.5
cycle
0% U
T
(100% dip in U
T
) for 1
cycle
40% U
T
(60% dip in U
T
) for 5
cycles
70% U
T
(30% dip in U
T
) for
500ms
0% U
T
(100% dip in U
T
) for 5
sec
Mains power quality should be
that of a typical commercial or
hospital environment. If the user
of the Model 260 Audiometer
requires continued operation
during power mains
interruptions, it is recommended
that the Model 260 Audiometer
be powered from an
uninterruptible power supply or a
battery
Power frequency (50/60 Hz)
magnetic field
IEC 61000-4-8
Power frequency magnetic fields
should be at levels characteristic
of a typical location in a typical
commercial or hospital
environment.
NOTE U
T
is the a.c. mains voltage prior to the application of the test level