Tomey ViewLight EM-4000 User Manual

7-5 䕔 
Guidance and manufacturer's declaration electromagnetic
immunity
The EM-4000 is intended for use in the electromagnetic environment specified below.
The customer or the user of the EM-4000 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 V rms
150kHz to 80MHz
3 V/m
80MHz to 2,5GHz
3 V rms
3 V/m
Portable and mobile RF communication
equipment should be used no closer to
any part of the EM-4000, including cables,
than the recommended separation
distance calculated from the equation
applicable to the frequency of the
transmitter. Recommended separation
distance
d =1.2
d =1.2
80 MHz to 800 MHz
d =2.3 800 MHz to 2.5 GHz
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 meters (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:
Note1 : At 80MHz and 800MHz, the higher frequency range applies.
Note2 : 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
EM-4000 is used exceeds the applicable RF compliance level above, the EM-4000 should be
observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as reorienting or relocating the EM-4000.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Table 204

Tomey ViewLight EM-4000 Specifications

General

Brand	Tomey
Model	ViewLight EM-4000
Category	Microscope
Language	English