9
Lib
er
at
ors
V
Safety
Table 4*
Guidance and manufacturers declaration—electromagnetic immunity
The Liberator is intended for use in the electromagnetic environment specified below. The customer or the user of the Liberator
should assure that it is used in such an environment.
Immunity test
IEC 60601 test level
Compliance level
Electromagnetic environment—guidance
Conducted RF
3Vrms
Not Applicable
Portable and mobile RF communications equipment should
IEC 61000-4-6
150kHz to 80 MHz
Battery powered
be used no closer to any part of the Liberator, including
device
cables, than the recommended separation distance
calculated from the equation applicable to the frequency
of the transmitter.
Recommended separation distance
d
= 1.2
√P
d
= 1.2
√P
80 MHz to 800 MHz
d
= 2.3
√P
800 MHz to 2,5 GHz
where
P
is the maximum output power rating of the
Radiated RF
3 V/m
3 V/m
transmitter in watts (W) according to the transmitter
IEC 61000-4-3
80 MHz to 2,5 GHz
manufacturer and
d
is the recommended separation
distance in meters (m).
Field strengths from fixed RF transmitters, as determined
by an electromagnetic site survery
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 asses the elec-
tromagnetic environment due to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field
strength in the location in which the Liberator is used exceeds the applicable RF compliance level above, the Liberator should be
observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as reori-
enting or relocating the Liberator.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
* This table is included as a standard requirement for equipment which has been tested to specific test levels and over specific
frquency ranges and been found compliant with regulations.
Liberators Technical Service Manual • PN 13350704 Rev
K
