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RSL 4500digital and RSL 5000digital by RODENSTOCK
RSL 4500digital and RSL 5000digital by RODENSTOCK
7.2 ELECTROMAGNETIC IMMUNITY
Guidance and manufacturer’s declaration – electromagnetic immunity
The Rodenstock
Digital Slit Lamp
is intended for use in the electromagnetic environment
specified below. The customer or user of the Digital Slit Lamp should ensure that it is used in
such an environment
Immunity test IEC 60601 Test
level
Compliance
level
Electromagnetic
environment – guidance
Electrostatic
discharge (ESD).
IEC 61000-4-2
± 8 kV contact
± 15 kV air
± 8 kV contact
± 15 kV air
Floors should be wood, concrete
or ceramic tile. If floors are
covered with synthetic material,
the relative humidity should be at
least 30%.
Electrical fast
transient/burst. IEC
61000-4-4
± 2 kV for power
supply lines
± 1 kV for power
supply lines
N/A
N/A
Mains power quality should be
that of a typical professional
healthcare facility environment.
Surge.
IEC 61000-4-5
± 1 kV line(s) to
line(s)
± 2 kV line(s) for
input/output line(s)
N/A
N/A
Mains power quality should be
that of a typical professional
healthcare facility environment.
Voltage dips, short
interruptions and
voltage variations
on power supply
input lines.
IEC 61000-4-11
U
T
= 0% 0.5 cycle
(0, 45, 90, 135, 180,
225, 270, 315°)
U
T
= 0%; 1 cycle
U
T
= 70%;
25/30 cycles (@ 0°)
U
T
= 0%;
250/300 cycle
U
T
= 0% 0.5 cycle
(0, 45, 90, 135, 180,
225, 270, 315°)
U
T
= 0%; 1 cycle
U
T
= 70%;
25/30 cycles (@ 0°)
U
T
= 0%;
250/300 cycle
Mains power quality should be
that of a typical professional
healthcare facility environment. If
the user of the Digital Slit Lamp
requires continued operations
during power mains interruptions,
it is recommended that the Digital
Slit Lamp be powered from an
uninterruptible power supply.
Power frequency
(50/60 Hz)
magnetic field. IEC
61000-4-8
30 A/m
30 A/m
Power frequency magnetic fields
should be at a level characteristic
of a typical location in a typical
professional healthcare facility
environment.
Note:
U
T
is the a. c. mains voltage prior to application of the test level.
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 Digital
Slit Lamp, including cables, than the recommended
separation distances calculated from the equation
applicable to the frequency of the transmitter.
Recommended separation distance
Conducted
RF IEC
61000-4-6
6 Vrms 150kHz
to 80MHz
6 V
d = 1.2 √ p
Radiated
RF IEC
61000-4-3
10 V/m 80MHz
to 2.7GHz
10 V/m
d = 1.2 √ p 80MHz to 800 MHz
d = 2.3 √ p 800MHz to 2.7GHz
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 survey¹,
should be less than the compliance level in each
frequency range.²
Interference may occur in the vicinity of
equipment marked with this symbol.
Note: At 80MHz and 800MHz, the higher frequency range applies. These guide lines may not apply in all situations.
Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.
1 Field strengths from fixed transmitters, such as base stations ( 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 Rodenstock Slit Lamp is used
exceeds the applicable RF compliance level above, the Rodenstock Slit Lamp should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as re-orientating or
relocating the Rodenstock Slit Lamp.
2 Over the frequency range 150kHz to 80 MHz, field strengths should be less than 10 V/m.
7.3 RECOMMENDED SAFE DISTANCES
Recommended separation distances between portable and mobile RF
communications equipment and the Digital Slitlamp
The Digital Slit Lamp is intended for the use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or the user of the Digital Slit Lamp can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile
RF communications equipment (transmitters) and the Digital Slit Lamp as recommended below,
according to the maximum output power of the communications equipment.
