
36
Technical Information
Table 4: Guidance and Manufacturer’s Declaration—
Electromagnetic Immunity
Immunity
Test
IEC 60601
Test Level
Compliance
Level
Electromagnetic
Environment—Guidance
This device is intended for use in the electromagnetic environment specified below.
The user of this device should ensure that it is used in such an environment.
Portable and mobile RF communications equipment should be used no closer to any part of
the device, 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 Vrms
150 kHz to
80 MHz
3 V
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to
2.5 GHz
3 V/m
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 meters (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 due to fixed RF transmitters, an
electromagnetic site survey should be considered. If the measured field
strength in the location in which the device is used exceeds the applicable RF
compliance level above, the device should be observed to verify normal opera-
tion. If abnormal performance is observed, additional measures may be neces-
sary, such as reorienting or relocating the device.
b. Over the frequency range 150 kHz to 80 MHz, field strengths should be less
than [3]V/m.
NOTES:
•
At 80 MHz and 800 MHz, the higher frequency range applies.
•
These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, objects, and people.
d
1.17
P
=
d
1.17
P
=
d
2.33
P
=
80 MHz to 800MHz
800MHz to 2.5 GHz