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72 Chapter 7 Compliance Welch Allyn Micropaq Monitor
Monitor Battery Charger Only- Guidance and Manufacturer’s Declaration—Electromagnetic Immunity
The Battery Charger for the Model 4XX Series Monitor is intended for use in the electromagnetic environment specified
below. The customer or the user of the battery charger 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 Battery Charger,
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 V
rms
150 kHz to 80 MHz
2Hz AM
3 V
rms
d = 1.2
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to 2.5 GHz
2Hz AM
3 V/m
d = 1.2 80 MHz to 800 MHz
d = 2.3 800 MHz to 2.5 GHz
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
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 Battery Charger is used exceeds the applicable RF compliance level above, the Battery Charger should be
observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting
or relocating the Battery Charger.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
P
P
P