Welch Allyn Insight 13500 Directions For Use Manual page 32

28 Guidance and manufacturer's declarations
Recommended separation distances between portable and mobile RF communications
equipment and the 13500 Insight BIO
The 13500 Insight BIO is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or user of the 13500 Insight BIO can help prevent electromagnetic interference by maintaining
a minimum distance between portable and mobile RF communications equipment (transmitters) and the 13500 Insight
BIO 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
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.
Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects, and people.
®
Welch Allyn 13500 Insight
Separation distance according to frequency of transmitter (m)
150 kHz to 80 MHz 80 MHz to 800 MHz
d= (1.17) d= (1.17)
0.11667 0.11667
0.36894 0.36894
1.1667 1.1667
3.6894 3.6894
™
Wireless LED Binocular Indirect Ophthalmoscope
800 MHz to 2.5 GHz
d= (2.23)
0.23333
0.73785
2.3333
7.3785