Welch Allyn Cardioperfect PRO ECG Recorder - User Manual - Manual (Page 25)

CardioPerfect
PRO ECG Recorder - User Manual
DIR 80012763 Ver. F 25 / 26
Electromagnetic Immunity
The Welch Allyn CardioPerfect Pro Cardiograph is intended for use in the electromagnetic environment specified
below. The customer or the user of the Welch Allyn CardioPerfect Pro Cardiograph should assure that it is used in
such an environment.
Immunity test IEC 60601
test level
Compliance level Electromagnetic environment –
guidance
Conducted RF
IEC 61000-4-6 3 Vrms
150 kHz to 80 MHz 3 Vrms Portable and mobile RF communications
equipment should be used no closer to any
part of the Welch Allyn CardioPerfect Pro
Cardiograph, including cables, than the
recommended separation distance
calculated from the equation applicable to
the frequency of the transmitter.
Recommended separation distance
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to 1 GHz 3 V/m
80 to 800 MHz
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
CardioPerfect Pro Cardiograph is used exceeds the applicable RF compliance level above, the Welch Allyn
CardioPerfect Pro Cardiograph 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
CardioPerfect Pro Cardiograph.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.