Recommended separation distances between portable and mobile RF communications equipment and WAND
WAND is intended for use in an electromagnetic environment (for home healthcare) in which radiated RF disturbances are controlled. The
customer or the user of WAND can help prevent electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and WAND as recommended below, according to the maximum output power of the
communications equipment.
Rated maximum
output power of
transmitter-
W
Separation distance according to frequency of transmitter -
m
150 kHz to 80 MHz
d = 1,2
80 MHz to 800 MHz
d = 1,2
800 MHz to 2,7 GHz
d = 2,3
0,01
N/A
0,12
0,23
0,1
N/A
0,38
0,73
1
N/A
1,2
2,3
10
N/A
3,8
7,3
100
N/A
12
23
For transmitters rated at a maximum output power not listed above, the recommended separation distance
d
in meters (m) can be
estimated using the equation applicable to the frequency of the transmitter, where
P
is the maximum output power rating of the transmitter
in watts (W) according to the transmitter manufacturer.
NOTE 1 - At 80 MHz and 800 MHz, the separation distance for 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.
Manufacturer’s declaration – electromagnetic immunity
WAND is intended for use in the electromagnetic environment (for home healthcare) specified below. The customer or the user of WAND
should assure that it is used in such an environment.
Immunity test
IEC 60601
test level
Compliance
level
Electromagnetic environment – guidance (for home healthcare environment)
Radiated RF
IEC 61000-4-3
10 V/m
80 MHz – 2,7
GHz
80 % AM at
1 kHz
10 V/m
80 MHz – 2,7
GHz
80 % AM at 1
kHz
Recommended separation distance:
d = 1,2
d = 1,2 80MHz to 800 MHz
d = 2,3 800MHz to 2,7 GHz
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:
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, 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
WAND is used exceeds the applicable RF compliance level above, WAND should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as re-orienting or relocating WAND.