Invacare Medley Ergo User Manual page 32

IEC 60601 test level
Immunity test
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.
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios,
a
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 medical bed Medley Ergo is used exceeds the applicable RF compliance level above,
the medical bed Medley Ergo should be observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as re orienting or relocating the medical bed Medley Ergo.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than [V
b
Compliance level
30
Electromagnetic environment - guidance
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 dis-
tance in metres (m).
b
Field strengths from fixed RF transmitters, as deter-
mined by an electromagnetic site survey,
than the compliance level in each frequency range.
Interference may occur in the vicinity of equipment
marked with the following symbol:
] V/m.
1
a should be less
b