Nidek Medical LM-7, Руководство оператора

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6. SPECIFICATIONS AND TECHNICAL INFORMATION : EMC (Electromagnetic Compatibility)
Guidance and manufacturer's declaration - electromagnetic immunity
The device is intended for use in the electromagnetic environment specified below. The customer or the user of the
device should assure 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 device, includ-
ing 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
Radiated RF
IEC 61000-4-3
3 Vrms
150 kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
3 Vrms
(V
1
=3)
3 V/m
(E
1
=3)
d =1.2√P 150 kHz to 80 MHz
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 trans-
mitter in watts (W) according to the transmitter manufac-
turer 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.
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 operation. If abnormal
performance is observed, additional measures may be necessary, 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.
Recommended separation distances between portable and mobile RF communications equipment and the device
The device is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The
customer or the user of the device can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the device 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√P
80 MHz to 800 MHz
d=1.2√P
800 MHz to 2.5 GHz
d=2.3√P
3 2 . 0 2 1 . 0 2 1 . 0 1 0 . 0
3 7 . 0 8 3 . 0 8 3 . 0 1 . 0
3 . 2 2 . 1 2 . 1 1
3 . 7 8 . 3 8 . 3 0 1
3 2 2 1 2 1 0 0 1
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres (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.
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