Maquet HCU 40, Instructions For Use Manual

Page: 145 / 148

| HCU 40 | 12 Applied Standards | 145 |
Instructions for Use | 1.0 | EN | 01
Copyright Maquet Cardiopulmonary GmbH
Immunity test IEC 60601 test
level Compliance level Electromagnetic environment –
guidance
Where P is the maximum output
power rating of the transmitter in watts
(W) according to the transmitter manu­
facturer and
d is the recommended
separation distance in meters (m).
Field strengths from fixed RF transmit­
ters, as determined by an electromag­
netic site survey
a
, should be less than
the compliance level in each fre­
quency 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 (cellu-
lar/cordless) telephones and land mobile radios, amateur radio, AM and FM
radio broadcast and TV broadcast cannot be predicted theoretically with ac-
curacy. To assess the electromagnetic environment due to fixed RF trans-
mitters, an electromagnetic site survey is to be recommended. If the
measured field strength in the location in which the device is used exceeds
the applicable RF compliance level above, the device must be observed to
verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as re-orienting or relocating the device.
b. Over the frequency range 150 kHz – 80 MHz field strengths should be less
than 10 V/m.
Recommended separation distances from RF communication equipment.
The HCU 40 is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customer or the user of the device
can help to prevent electromagnetic interference by maintaining a minimum
distance between portable and mobile RF communications equipment
(transmitters) and the device, as recommended below, according to the maximum
output power of the communications equipment.