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Instructions for use ELECTROmatic TM and TMM/TMC
12 Information about electromagnetic compatibility | 12.3 Guidelines and manufacturer's statement - Electromag-
netic immunity
Interference im-
munity tests
IEC 60601 test
levels
Compliance level
Electromagnetic environment
- Guidelines
Wire-based HF inter-
ference according to
IEC 61000-4-6
3 V
eff
150 kHz to 80 MHz
outside ISM bands
a
3 V
eff
Handheld and mobile wireless
devices should not be used at a
shorter distance from the ELEC-
TROmatic including cords than
the recommended safe clearance
calculated using the appropriate
equation for the emission fre-
quency.
Recommended safe distance:
d=1.17
P
d=0.35
P
for 80 MHz to 800
MHz
d=0.70
P
for 800 MHz to 2.5
GHz
where P is the maximal nominal
power of the transmitter in watts
(W) as specified by the transmit-
ter manufacturer and d is the re-
commended safe clearance in
metres (m).
b
The field strength of stationary
wireless radio transmitters as
measured locally
c
should be
lower than the conformance level
at all frequencies.
d
Interference is possible in the vi-
cinity of devices bearing the fol-
lowing icon.
Wireless HF interfer-
ence according to IEC
61000-4-3
3 V/m
80 MHz to 2700 MHz
3 V/m
a
The ISM frequency bands (for industrial, scientific and medical applications)
between 150 kHz and 80 MHz are 6.765 MHz to 6.795 MHz; 13.553 MHz to
13.567 MHz; 26.957 MHZ to 27.283 MHz and 40.66 MHz to 40.70 MHz.
b
The conformance levels in the ISM frequency bands between 150 kHz and 80
MHz and the frequency range of 80 MHz and 2.5 GHz are intended to reduce
the probability that mobile and portable communications equipment will pro-
duce disturbances when they are unintentionally brought near the patient. For
this reason, the additional factor of 10/3 is applied in the calculation of the re-
commended safe clearances in these ranges of frequencies.
c
The field strength of stationary transmitters such as base stations of mobile
telephones and land mobile radio devices, amateur radio stations, AM and FM,
radio and television broadcasters cannot be theoretically predetermined. A site
study should be considered to determine the electromagnetic environment in
terms of stationary transmitters. If the measured field strength at the site, at
which the ELECTROmatic is used, exceeds the compliance levels shown above,
the ELECTROmatic should be monitored to demonstrate proper function. If any
uncommon performance characteristics are observed, additional measures may
be required, such as, e.g., changing the orientation or using a different location
for the ELECTROmatic
d
In the frequency range of 150 kHz to 80 MHz, the field strength should be less
than 3V
eff
V/m.
Note 1: At 80 MHz and 800 MHz, the higher frequency range applies.
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