Soehnle 7730.65.001 Mode D'emploi page 52

Guidelines and Manufacturer Declarations / Resistance to Electromagnetic Interference
The type series 7730.65 scale is designated for operations in the electromagnetic environments indicated below.
Customers or users of type 7730.65.xxx scales should ensure that the scale is used in such an environment.
Interference resistance
tests
Conducted HF
interferences
law. IEC 61000-4-6
Radiated HF interference
law. IEC 61000-4-3
NOTE 1: The higher frequency range applies for 26 MHz and 800 MHz
NOTE 2: These guidelines may not apply in all cases. The propagation of
electromagnetic phenomena is influenced by the absorption and reflection of buildings,
objects and persons.
a) The field strength of stationary transmitters such as base stations and mobile phones and mobile land transmitters, amateur radios, AM and FM
broadcast and television transmitters cannot be theoretically predicted accurately. A study of the location should be considered in order to
determine the electromagnetic environment of stationary transmitters. If the measured field strength at the location where the device is used
exceeds the above compliance level, the device should be monitored in order to demonstrate the intended function. If unusual performance
characteristics are observed, additional steps may be required such as a change or another location for the device.
b) The field strength should be less than 3 V/m above the frequency range of 150 kHz to 80 MHz.
www.soehnle-professional.com
52
IEC 60601 Test level Compliance level
3 V 10 V
eff
150 kHz to 80 MHz 150 kHz to 80 MHz
10V/m
3 V/m 26 MHz to 2.7 GHz
80 MHz to 2.5 GHz
Electromagnetic environment -
Portable and mobile radios should not be
used at a distance to the 7730.65 scale
including the cable smaller than the
recommended protective distance
calculated based on the equation
applicable for the transmitted frequency.
Recommended protective frequency:
eff
d 0.4 P
=
d 0.4 P
=
for 80 MHz to 800 MHz
d = 0.7 P
for 800 MHz to 2.7 GHz
with P as the nominal output of the
transmitter in watts (W) as per the
manufacturer's specifications and
recommended protective distance in
meters (m).
The field strength of stationary radio
transmitters should for all frequencies
pursuant to an on-site test be lower than
the compliance level.
Interference is possible in the vicinity of
devices displaying the following pictogram.
(
(
(
Guidelines
d
as the
)
)
)
52