GE TruSat Technical Reference Manual page 17

Guidance and manufacturer's declaration - electromagnetic immunity
The TruSat pulse oximeter is intended for use in the electromagnetic environment specified below. The customer or
the user of the monitor should assure that it is used in such an environment.
Portable and mobile RF communications equipment should be used no closer to any part of the monitor, including
cables, than the recommended separation distance calculated from the equation applicable for the frequency of the
transmitter.
NOTE: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects, and people.
EN 60601 test level
Immunity test
Conducted RF 3 Vrms
IEC 61000-4-6 150 kHz to 80 MHz
Radiated RF 3 V/m
IEC 61000-4-3 80 MHz to 2.5 GHz
Interference may occur in the vicinity of equipment marked with this symbol.
Field strengths from fixed RF transmitters, as deter mined by an electromagnetic site survey,
compliance level in each fre quency range.
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 theoreti cally
with accuracy. To assess the electromagnetic environment due to fixed RF trans mitters, an electromagnetic site
survey should be considered. If the measured field strength in the location in which the TruSat is used exceeds the
applicable RF compliance level above, the TruSat should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as re-orienting or relocating the TruSat.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 5 V/m.
Electromagnetic environment - guidance
Compliance
Recommended Separation Distance
level
5 V
5 V/m
10 V/m
where P is the maximum output power rat ing of the
transmitter in watts (W) according to the trans mitter
manufacturer and d is the recommended separation
dis tance in meters (m).
NOTE: At 80 MHz and 800 MHz, the separation distance
for the higher frequency range applies.
b
Product Description and Specifications
80 MHz to 800 MHz
800 MHz to 2.5 GHz
a
should be less than the
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