Valleylab SurgiStat II, Service Manual

Page: 34 / 82

3-10 SurgiStat II Service Manual
Recommended separation distances between portable and mobile RF communication equipment and the
SurgiStat II
The SurgiStat II is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The Customer or the user of the SurgiStat II can help prevent electromagnetic interferences by maintaining
a minimum distance between portable and mobile RF communications equipment (transmitters) and the SurgiStat II
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=1.2
√
P
80MHz to 800MHz
d=1.2
√
P
800MHz to 2.5GHz
d=2.3
√
P
0.01 0.12 m 0.12 m 0.23 m
0.1 0.38 m 0.38 m 0.73 m
1 1.2 m 1.2 m 2.3 m
10 3.8 m 3.8 m 7.3 m
100 12 m 12 m 23 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.