Covidien Force FX, Service Manual

Page: 52 / 246

Standards and IEC Classifications
3-22 Force FX Electrosurgical Generator C Service Manual
a. Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless)
telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV
broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic
environment due to fixed RF transmitters, an electromagnetic site survey should be considered.
If the measured field strength in the location in which the Force FX Electrosurgical Generator C is
used exceeds the applicable RF compliance level above, the Force FX Electrosurgical Generator C
should be observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as reorienting or relocating the Force FX Electrosurgical
Generator C.
b. Over the frequency range 150kHz to 80MHz, field strengths should be less than 7V/m.
Recommended separation distances between portable and mobile RF communication
equipment and the Force FX Electrosurgical Generator C
The Force FX Electrosurgical Generator C is intended for use in an electromagnetic environment
in which radiated RF disturbances are controlled. The Customer or the user of the Force FX
Electrosurgical Generator C can help prevent electromagnetic interferences by maintaining a
minimum distance between portable and mobile RF communications equipment (transmitters)
and the Force FX Electrosurgical Generator C 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 a 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.