14 English
Note1: 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 800 Series is used
exceeds the applicable RF compliance level above, the 800 Series should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting
or relocating the 800 Series.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended separation distances between portable and mobile RF communications
equipment and the 800 Series
The 800 Series is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or user of the 800 Series can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the 800 Series as recommended below, according to the maximum output power of the
communications equipment.
Rated max. output
power of
transmitter (W)
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation distanced
in meters (m) can be estimated using the equation applicable to the frequency of the transmitter, where P is
the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer.
Note 1: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
Welch Allyn® KleenSpec 800 Series Cordless Illumination System
Electromagnetic immunity
Separation distance according to frequency of transmitter (m)
150 kHz to 80 MHz
150 kHz to 80 MHz
outside ISM bands
in ISM bands
0.12
0.20
0.37
0.63
1.17
2.00
3.69
6.32
11.67
20.00
in the vicinity of equipment marked with
the following symbol:
80 MHz to 800 MHz 800 MHz to 2.7
GHz
0.12
0.23
0.38
0.73
1.20
2.30
3.79
7.27
12.00
23.00