Welch Allyn Acuity 6.31.01 User Manual Update - User Manual - Manual (Page 14)

10 Chapter 1 English Update for Acuity System Welch Allyn Acuity System
Recommended separation distances between portable and mobile RF communications equipment and the
Acuity System
The Acuity System is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled.
The customer or the user of the Acuity System can help prevent electromagnetic interference by maintaining a minimum
distance between portable and mobile RF communications equipment (transmitters) and the Acuity System as recommended
below, according to the maximum output power of the communications equipment.
Rated maximum output
power of transmitter
W
Separation distance according to frequency of transmitter
m
150 kHz to 80 MHz
d = 1.2
80 MHz to 800 MHz
d = 1.2
800 MHz to 2.5 GHz
d = 2.3
0.01 0.12 0.12 0.23
0.1 0.38 0.38 0.73
1 1.2 1.2 2.3
10 3.8 3.8 7.3
100 12 12 23
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.
P P P