Welch Allyn Solarc Light Source - User Manual - Manual (Page 26)

24 Chapter 4 Specifications Welch Allyn Light Source
Radiated
RF, IEC
61000-4-3 3 V/m
80 MHz to
2.5 GHz 3 V/m d = (1.17) 80 MHz to 800 MHz
d = (2.33) 800 MHz to 2.5 GHz
where P is the maximum output power rating of the
transmitter in watts according to the transmitter
manufacturer and d is the recommended separation
distance in meters.
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:
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.
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 Welch Allyn Light Source is used exceeds the applicable
RF compliance level above, the Welch Allyn Light Source should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as
reorienting or relocating the Welch Allyn Light Source.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
P
P