Welch Allyn AED 10 User Manual page 80

User Manual
Guidance and manufacturer's declaration—electromagnetic immunity
(IEC 60601-1-2 Table 203)
The Welch Allyn AED 10 is intended for use in the electromagnetic environment specified
below. The customer or the user of the Welch Allyn AED 10 should assure that it is used
in such an environment.
Immunity test
Portable and mobile RF communications equipment should be used no closer to any part of the Welch Allyn AED 10,
including cables, than the recommended separation distance calculated from the equation applicable to the frequency of
the transmitter.
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
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.
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. The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are 6.765 MHz to 6.795 MHz; 13.553 MHz to 13.567
MHz; 26.957 MHz to 27.283 MHz; and 40.66 MHz to 40.70 MHz.
b. The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency range 80 MHz to 2.5 GHz are
intended to decrease the likelihood that mobile/portable communications equipment could cause interference if it is inadvertently
brought into patient areas. For this reason, an additional factor of 10/3 is used in calculating the recommended separation distance
for transmitters in these frequency ranges.
c. 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 AED 10 is used exceeds the applicable RF compliance level above, the Welch Allyn AED 10 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 AED 10.
d. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than [V 1 ] V/m.
IEC 60601 test level
3 V
rms
150 kHz to 80 MHz outside ISM bands
10 V
rms
150 kHz to 80 MHz in ISM bands
10 V/m
80 MHz to 2.5GHz
d
Interference may occur in the vicinity of equipment marked with this symbol.
Compliance Electromagnetic
level environment - guidance
Recommended separation
distance
3 V d = 1.17
rms
a
10 V d = 1.20
rms
a
10 V/m d = 1.20
80 to 800 MHz
d = 2.30
800 MHz to 2.5 GHz
b
c
, should be less than the
Specifications 71
P
P
P
P