Welch Allyn Acuity Directions For Use Manual page 190

186 Chapter 11 Specifications
Guidance and Manufacturer's Declaration—Electromagnetic Immunity
The Acuity System is intended for use in the electromagnetic environment specified below. The customer or the user of
the Acuity System should assure that it is used in such an environment.
Immunity Test
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
Note 1
Note 2
a
b
IEC 60601 Test Level Compliance
Level
3 V 3 V
rms rms
150 kHz to 80 MHz
3 V/m 3 V/m
80 MHz to 2.5 GHz
At 80 MHz and 800 MHz, the higher frequency range applies.
These guidelines might not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
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 Acuity System is used exceeds the applicable RF compliance
level above, the Acuity System should be observed to verify normal operation. If abnormal
performance is observed, additional measures might be necessary, such as reorienting or
relocating the Acuity System.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Welch Allyn Acuity Central Monitoring System
Electromagnetic Environment—Guidance
Portable and mobile RF communications equipment
should be used no closer to any part of the Acuity
System, including cables, than the recommended
separation distance calculated from the equation
applicable to the frequency of the transmitter.
Recommended Separation Distance
d = 1.2 P
d = 1.2
P 80 MHz to 800 MHz
d = 2.3 800 MHz to 2.5 GHz
P
where P is the maximum output power rating of the
transmitter in watts according to the transmitter
manufacturer and d is the recommended separation
distance in meters.
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey
be less than the compliance level in each frequency
b
range .
Interference might occur in the vicinity of equipment
marked with this symbol:
a
, should