Keeler Z Series, Инструкция по эксплуатации

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18
EN
KSL-Z by KEELER
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 Keeler
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 1
50kHz to
80MHz
6 V d = 1.2 √ p
Radiated
RF IEC
61000-4-3
10 V/m 150kHz
to 280MHz
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 Keeler Slit Lamp is used exceeds
the applicable RF compliance level above, the Keeler 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
Keeler Slit Lamp.
2 Over the frequency range 150kHz to 80 MHz, field strengths should be less than 10 V/m.
9.3 RECOMMENDED SAFE DISTANCES
Recommended separation distances between portable and mobile RF communications
equipment and the Keeler Slit Lamp
The Keeler 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 Keeler Slit Lamp can
help prevent electromagnetic interference by maintaining a minimum distance between mobile
RF communications equipment (transmitters) and the Keeler Slit Lamp as recommended below,
according to the maximum output power of the communications equipment.