Welch Allyn 88000A Mode D'emploi page 41

Directions For Use
Recommended Separation Distances Between Portable and Mobile RF Communications Equipment and the Video Colposcope
The REF 880 and 890 Series Video Colposcope is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or user of the REF 880 and 890 Series Video Colposcope can help prevent electromagnetic interference by maintaining
a minimum distance between portable and mobile RF communications equipment (transmitters) and the REF 880 and 890 Series Video
Colposcope 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 distance d 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.
Separation Distance According to Frequency of Transmitter (m)
150 kHz to 80 MHz
P
d = (1.17)
0.11667
0.36894
1.1667
3.6894
11.667
80 MHz to 800 MHz
P
d = (1.17)
0.11667
0.36894
1.1667
3.6894
11.667
Specifications 39
800 MHz to 2.5 GHz
P
d = (2.33)
0.23333
0.73785
2.3333
7.3785
23.3333