3
4
3
5
RECOMMENDED SEPARATION DISTANCES BETWEEN
PORTABLE AND MOBILE RF COMMUNICATIONS EQUIPMENT
AND THE MODEL P8400 HEMOSTATIX THERMAL SCALPEL
SYSTEM
The Model P8400 Hemostatix Thermal Scalpel System is intended for use in an electromagnetic
environment in which radiated RF disturbances are controlled. The customer or the user of the Model
P8400 Hemostatix Thermal Scalpel System can
help prevent electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and the Model P8400
Hemostatix Thermal Scalpel 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
outside ISM bands
d=[3.5/V1]√P
80 kHz to 800
MHz in ISM
bands
d=[3.5/E1]√P
800 MHz to 2.5 GHz
d=[7/E1]√P
0.01
d=[3.5/3]√0.01
d=[3.5/3]√0.01
d=[7/3]√0.01
0.1
d=[3.5/3]√0.1
d=[3.5/3]√0.1
d=[7/3]√0.1
1
d=[3.5/3]√1
d=[3.5/3]√1
d=[7/3]√1
10
d=[3.5/3]√10
d=[3.5/3]√10
d=[7/3]√10
100
d=[3.5/3]√100
d=[3.5/3]√100
d=[7/3]√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 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.
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