Guidance And Manufacturer's Declaration – Electromagnetic Immunity - GE CARESCAPE Monitor B850 Technical Manual

Guidance and manufacturer's declaration – electromagnetic
immunity
Immunity test IEC 60601 test level
Conducted RF
IEC 61000-4-6 150 KHz to 80 MHz
Radiated RF
IEC 61000-4-3 80 MHz to 2.5 GHz
Note 1: 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 reflection from structures, objects,
and people.
a
The measurement of EEG signals, as provided in both the EEG and BIS measurement modules, is inherently a very sensitive
measurement. Physiological signal levels as low as 0.1 micro volts are measured.
b
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile 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 equipment is used exceeds the applicable RF compliance level above, the equipment should be
observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as
re-orienting or relocating the equipment.
c
Over the frequency range 150 KHz to 80 MHz, field strengths should be less than 2 V/m.
A-4
The CARESCAPE Monitor B850 is intended for use in the electromagnetic
environment specified below. It is the responsibility of the customer or user to assure
that the CARESCAPE Monitor B850 is used in such an environment.
Compliance level
3 Vrms 3 V rms system
0.8 V rms EEG module
3 V/m 3 V/m system
2 V/m BIS module
CARESCAPE Monitor B850
Electromagnetic environment – guidance
Portable and mobile RF communications equipment should
not be used closer to any part of the equipment, 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
a
P
d = 1.2 80 MHz to 800 MHz
a
P
d = 2.3 800 MHz to 2.5 GHz
where P is the maximum output power rating of the transmitter
in watts (W) according to the transmitter manufacturer, and d
is the recommended separation distance in meters (m).
Field strengths from fixed RF transmitters, as determined by
an electromagnetic site survey
compliance level in each frequency range
Interference may occur in the vicinity of equipment marked
with the following symbol:
b
, should be less than the
c
.
2040384-004D