Digitimer DS5 - Electromagnetic Immunity (Table 204)

DS5 Isolated Bipolar Constant Current Stimulator DS5 Operator's Manual 5.0
Electromagnetic Immunity (Table 204)
The Digitimer DS5 is intended for use in the electromagnetic environment specified below. The customer
or the user of the Digitimer DS5 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 V
3 V/m
Portable and mobile RF communications
equipment should be used no closer to any
part of the Digitimer DS5, including cables,
than the recommended separation distance
calculated from the equation applicable to the
frequency of the transmitter.
Recommended separation distance
d = [3,5/
3
]
Å
P
d = [3,5/
3
]
Å
P 80MHz to 800Mhz
d = [7/
3
]
Å
P 800MHz to 2.5GHz
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 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 electromagnetic environment due to fixed RF transmitters, an
electromagnetic site survey should be considered. If measured field strength in the location in which the
Digitimer DS5 is used exceeds the applicable compliance level above, the Digitimer DS5 should be
observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as re-orienting or relocating the Digitimer DS5.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Digitimer Ltd. 49 of 52 Copyright © 2009