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39Technical Specifications
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Recommended separation distances between portable and mobile RF communications
equipment and the VPAP Adapt SV
The VPAP Adapt SV is intended for use in an environment in which radiated RF disturbances are controlled.
The customer or the user of the VPAP Adapt SV can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the VPAP Adapt SV as recommended below, according to the maximum output power of
the communications equipment.
Separation distance according to frequency of transmitter
m
Rated maximum output
power of transmitter
W
150 kHz to 80 MHz
d = 1.17 √P
80 MHz to 800 MHz
d = 0.35 √P
800 MHz to 2.5 GHz
d = 0.7 √P
0.01 0.17 0.04 0.07
0.1 0.37 0.11 0.22
1 1.17 0.35 0.70
10 3.69 1.11 2.21
100 11.70 3.50 7.00
For transmitters rated at a maximum output power not listed above, the recommended separation distance
d in metres (m) can be determined 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.
228234 VPAP Adapt SV User Guide USA Eng.book Page 39 Monday, October 13, 2008 2:15 PM