3
Guidance and Manufacturer’s Declaration: Electromagnetic Immunity
Model 240-030-970
is intended for use in the electromagnetic environment specified below.
The customer or the user of
Model 240-030-970
should ensure that it is used in such an
environment.
Immunity Test
IEC 60601 Test
level
Compliance
Level
Electromagnetic
Environment - guidance
Portable and mobile RF communications
equipment should be used no closer
to any part of the Wireless Transmitter
system, including its 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
d = 1.17√P
Radiated RF
IEC 61000-4-3
3 V/m
80MHz to 2.5
GHz
3 V/m
d = 1.17√P 80 MHz to 800 MHz
d = 2.33√P 800 MHz to 2.5 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 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:
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 (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
Model 240-030-970
system is used exceeds the applicable
RF compliance level above, the
Model 240-030-970
system should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating the
Model 240-030-970
unit.
(b) Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
