Electromagnetic immunity
Power frequency
(50Hz) magnetic field
IEC 61000-4-8
3A/m
3A/m
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 AC mains voltage prior to application of the test level.
Electromagnetic immunity
The Welch Allyn Remote Monitoring Scale RPM-Scale100 is intended for use in the electromagnetic environment
specified below. The customer or the user of the Welch Allyn Remote Monitoring Scale RPM-Scale100 should assure
that it is used in such an environment.
Immunity test
IEC 60601 test level Compliance level
Electromagnetic environment - guidance
Portable and mobile RF communications
equipment should be used no closer to any part
of the Welch Allyn Remote Monitoring Scale
RPM-Scale100, including cables, than the
recommended separation distance calculated
from the equation applicable to the frequency
of the transmitter.
Recommended separation distance
Conducted RF
IEC 61000-4-6
3 Vrms
150 kHz to 80 MHz
3 Vrms
d
= (1.167)
Radiated RF
IEC 61000-4-3
3 V/m 80 MHz to 1 GHz 3 V/m
d
= (1.167)
80 to 800 MHz
d
= (2.333)
800 MHz to 2,5 GHz
where
P
is the maximum output power rating of
the transmitter in watts (W) 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:
Note1: 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 strengths 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 Welch Allyn Remote Monitoring Scale RPM-
Scale100 is used exceeds the applicable RF compliance level above, the Welch Allyn Remote Monitoring Scale RPM-
16 Appendices
Welch Allyn Remote Monitoring Scale RPM-Scale100
Summary of Contents for RPM-Scale100
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