Specifications
Chapter 1: Introduction
Electrically Operated General Ward Bed
Page 1 - 23
Operation and Maintenance Manual
(154588 REV 1)
1
Electromagnetic Immunity Guidance
Guidance and Manufacturer's Declaration—Electromagnetic Immunity
The bed is intended for use in the electromagnetic environment specified below. The customer or the user of the bed
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
Radiated RF
IEC 61000-4-
3
3 Vrms
150 kHz to
80 MHz
3 V/m
80 MHz to
2.5 GHz
3 Vrms
3V/m
Portable and mobile RF communications equipment should be
used no closer to any part of the bed than the recommended sepa-
ration distance calculated from the equation applicable to the fre-
quency of the transmitter.
Recommended separation distanc
e
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 metres (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:
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 dur to fixed RF transmitters, an electromagnetic site survey should be considered. If the
measured field strength in the location in which the bed is used exceeds the applicable RF compliance level above, the bed
should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary,
such as reorienting or relocating the bed.
b. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
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.
d
3.5
3
-------
P
=
d
3.5
3
-------
P
=
d
7
3
---
P
=
80 MHz to 800 MHz
800 MHz to 2.5 GHz