EMC notes
4990113_030_01 — 2069106 — 2017–11–02
87
Table 4 according to IEC 60601-1-2:2007
Guidelines and manufacturer's declaration - electromagnetic immunity
The TruSystem 7500 operating table is intended for use in the electromagnetic environments as specified below. The customer
or user of the aforementioned device should ensure that it is operated in one of the environments as described.
Interference immunity
test
IEC 60601 immunity
Compliance level Electromagnetic environment - guidelines
Portable and mobile RF communications
equipment should not be used in the vicinity of
the TruSystem 7500 operating table, including
cables, nor closer than the recommended
separation distance calculated from the
equation applicable to the frequency of the
transmitter.
Recommended safe distance:
Conducted HF
disturbance variables as
per IEC 61000-4-6
3 V
eff
150 kHz to 80 MHz
3 V
eff
d=1.17
√
P
Radiated HF disturbance
variables in accordance
with IEC 61000-4-3
3 V/m
80 MHz to 2.5 GHz
3 V/m
d=1.17
√
P
80 MHz to 800 MHz
d=2.33
√
P
800 MHz to 2.5 GHz
P is the nominal rating of the transmitter in
watts (W) as per transmitter manufacturer data
and d is the recommended safe 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:
Note 1
For 80 MHz and 800 MHz, the higher value applies.
Note 2
These guidelines might not be applicable in all cases. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
a
Field strengths from fixed transmitters, such as base stations of radio telephones and mobile radios,
amateur radio stations, AM and FM radio and television transmitters cannot theoretically be
precisely determined in advance. In order to determine the electromagnetic environment with
regard to stationary transmitters, a study of the location should be considered. If the measured field
strength in the location in which the aforementioned equipment is used exceeds the applicable
aforementioned compliance level, then the TruSystem 7500 operating table should be observed
to verify normal operation. Additional measures may be required such as e.g. reorienting or
relocating the TruSystem 7500 operating table.
b
The field strength in the 150 kHz to 80 MHz frequency range should be less than 3 V/m.
