Standards and IEC Classifications
Technical Specifications
LigaSure Vessel Sealing Generator Service Manual 4-13
Recommended separation distances between portable and mobile RF communication equipment and the
LigaSure
The LigaSure is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled.
The Customer or the user of the LigaSure can help prevent electromagnetic interferences by maintaining a minimum
distance between portable and mobile RF communications equipment (transmitters) and the LigaSure 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 80MHz
d =
0.5√P
80MHz to 800MHz
d = 0.5√P
800MHz to 2.5GHz
d = √P
0.01 0.05 m 0.05 m 0.1 m
0.1 0.16 m 0.16 m 0.32 m
1 0.5 m 0.5 m 1 m
10 1.6 m 1.6 m 3.2 m
100 5 m 5 m 10 m
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 80MHz and 800MHz, 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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