Welch Allyn CardioPerfect Workstation SpiroPerfect Module - User Manual - Manual (Page 84)

CardioPerfect Workstation
SpiroPerfect Module
– User Manual
DIR 80012334 Ver. F 84 / 95
Electromagnetic Immunity
The Welch Allyn SpiroPerfect is intended for use in the electromagnetic environment specified below. The customer
or the user of the Welch Allyn SpiroPerfect should assure that it is used in such an environment.
Immunity test IEC 60601
test level
Compliance level
Electromagnetic environment
–
guidance
 Portable and mobile RF communications
equipment should be used no closer to any
part of the Welch Allyn SpiroPerfect,
including cables, than the recommended
separation distance calculated from the
equation applicable to the frequency of the
transmitter.
Recommended separation distance
Conducted RF
IEC 61000-4-6
3 Vrms
150 kHz to 80 MHz
3 Vrms
P d
 
2 . 1
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to 2,5 GHz
3 V/m
P d
 
2 . 1 80 to 800 MHz
P d
 
3 . 2 800 MHz to 2,5 GHz
where P is the maximum output power rating
of the transmitter in watts (W) and d is the
recommended separation 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 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 absorption and
reflection from structures, objects and people.
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 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 Welch Allyn SpiroPerfect is used
exceeds the applicable RF compliance level above, the Welch Allyn SpiroPerfect should be observed to verify
normal operation. If abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating the Welch Allyn SpiroPerfect.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.