23
15140-101 Rev. C
Guidance Tables
(continued)
Table 204
– Guidance and Manufacturer’s Declaration
Electromagnetic Immunity
Equipment and Systems that are NOT Life-supporting
Guidance and Manufacturer’s Declaration – Electromagnetic Immunity
The Xcel
455 is intended for use in the electromagnetic environment specified below. The customer
or user of the Xcel 455 should ensure 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
3 Vrms
150 kHz to 80
MHz
(V1) = 3 Vrms
Portable and mobile RF communications
equipment should be no closer to any part
of the Xcel 455
,
including cables, than the
recommended separation distance calcu-
lated from the equation applicable to the
frequency of the transmitter.
Recommended Separation Distance:
d=(3.5/V1)(Sqrt P)
d=(3.5/E1)(Sqrt P)
80 to 800 MHz
d=(7/E1)(Sqrt P)
800 MHz to 2.5 GHz
Where P is the max output power rating of
the transmitter in watts (W) according to the
transmitter manufacturer and d is the recom-
mended separation distance in meters (m).
Field strengths from fixed RF transmitters,
as determined by an electromagnetic site
survey, should be less than the compliance
level in each frequency range.
Interference may occur in the vicinity
of equipment marked with the following
symbol.
Radiated RF
IEC 61000-4-3
80 MHz to 2.5
GHz @ 3V/m
(E1) = 3 V/m
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.
* 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. The measured field strength in the location in which the ME Equipment or
ME System should be observed to verify normal operation. If abnormal performance is observed, additional
measures many be necessary, such as re-orienting or relocating the ME Equipment or ME System.
* Over the frequency range 150 kHz to 80 MHz, field strengths should be less then [V1] V/m.
Summary of Contents for XCEL 455
Page 1: ...XCEL 455 Slit Lamp User s Guide...
Page 26: ...26 15140 101 Rev C Notes...
Page 27: ...27 15140 101 Rev C Notes...
