Topcon CT-800, User Manual

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GENERAL INFORMATION ON USAGE AND MAINTENANCE
Guidance and manufacturer's declaration - electromagnetic immunity
The CT-800 is intended for use in the electromagnetic environment specified below.
The customer or the user of the CT-800 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 Vrms
150kHz to
80MHz
3 V/m
80MHz to 2,
5GHz
3 V
3 V/m
Portable and mobile RF communications equipment should be
used no closer to any part of the CT-800, 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 80MHz to 800MHz
d = 2.3 800MHz to 2, 5GHz
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 com-
pliance level in each frequency range.
b
Interference may occur in the vicinity of equipment marked with the
following symbol:
NOTE 1
NOTE 2
At 80 MHz and 800 MHz, the higher frequency range applies.
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorp-
tion 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 CT-800 is used
exceeds the applicable RF compliance level above, the CT-800 should be observed to verify normal operation.
If abnormal performance is observed, additional measures may be necessary, such as reorienting or relocat-
ing the CT-800.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
P
P
P