Citizen Systems CTD 504 Thermometer User Manual


 
Appendix
Guidance and manufacturer’s declaration - electromagnetic emissions
The device is intended for use in the electromagnetic environments listed below, and should only
be used in such environments:
Emissions test Compliance
Electromagnetic environment - quidance
RF emissions CISPR 11
Group 1
RF energy is used only to maintain the
device’s operation. Therefore, its RF
emissions are so low that it is not likely
to cause any interference in nearby
electronic equipment.
RF emissions CIS PR 11
Class B
The device is suitable for use in all
establishments, including domestic
establishments, and those directly
connected to the public low-voltage power
supply network that supplies buildings
used for domestic purposes.
Harmonic emissions IEC 61000-3-2
Not Applicable
Voltage fl uctuations/ fl icker
emissions IEC 61000-3-3
Not Applicable
Guidance and manufacturer’s declaration - electromagnetic immunity
The device is intended for use in the electromagnetic environments listed below, and should only
be used in such environments:
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
150 MHz to
80 GHz
3 V/m
80 MHz to
2.5 GHz
Not Applicable
3 V/m
Portable and mobile RF communications
equipment should be used no closer to any
part of the device, including cables, than
the recommended separation distance
calculated from the equation applicable to
the frequency of the transmitter.
Recommended separation distance
Not Applicable
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 fi xed 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:
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 refl ection from structures, objects and people.