marsden M-560 User Manual page 16

Power frequency (50/60
Hz) magnetic field IEC
61000-4-8
Note UT is the A.C mains voltage prior to application of the test level.
Guidance and manufacturer's declaration – electromagnetic immunity.
This scale is intended for use in the electromagnetic environment specified below. The customer or the user
of the scale should ensure that it is used in such an environment.
Immunity Test
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
5s
3 A/m
IEC 60601 test level
3 Vrms
150 KHx to 80 MHz
3 V/m 80 MHz to 2,5
GHz
5s
3 A/m
Compliance level
3 Vrms
3 V/m
recommended that this scale
is powered from an
uninterruptable power supply
or a battery.
The scale's power frequency
magnetic fields should be at
levels characteristic of a typical
location in a typical
commercial or hospital
environment.
Electromagnetic
environment-guidance
Portable and mobile RF
communications equipment
should be used no closer to
any part of the scale including
cables, than the
recommended separation
distance calculated from the
equation applicable to the
frequency of the transmitter.
Recommended separation
distance:
P
d = 1,2 √
P
d = 1,2 √ 80MHz to 800 MHz
P
d = 2,3 √ 800MHz to 2,5 GHz
P
Where is the maximum
output power rating of the
transmitter in watts (w)
according to the transmitter
d
manufacturer and is the
recommended separation
distance in meters (m).
Field strengths from fixed RF
transmitters, as determined by
an electromagnetic site
survey, should be less than the
compliance level in each
frequency range.
Interference may occur in the
vicinity of equipment marked
Page 16