Zimmer Cryo Mini - Page 37

Manufacturer´s EMC declaration
18
Page 30
a
Theoretically, it is not possible to exactly predict the field strengths of fixed transmitters, such as base stations for
radiotelephones and mobile land radios, amateur radio stations, AM and FM radio and TV broadcasting. To determine the
electromagnetic environment in relation to the fixed transmitters, an electromagnetic site survey should be considered. If the
measured field strength in the location, where the CryoMini device is to be used, exceeds the above compliance levels, the
CryoMini device should be monitored in order to ensure that it is functioning as intended. If unusual features are noticed,
additional measures may be necessary, such as re-orienting or relocating the CryoMini device.
b
When above the frequency range from 150 kHz to 80 MHz, the field strength should be less than 3 V/m.
Recommended separation distances between portable and mobile HF telecommunication devices and the CryoMini
device
The CryoMini device is intended for operation in an electromagnetic environment, where HF disturbances are monitored. The
customer or user of the CryoMini device can contribute to avoiding electromagnetic errors, by adhering to the minimum
distance between portable and mobile HF telecommunications devices (transmitters) and the CryoMini device, depending on
the output power of the communication device, as indicated below.
Rated output of transmitter
W
Separation distance according to frequency of transmitter
m
150 kHz to 80 MHz
d= 1.2 √P
80 MHz to 800 MHz
d= 0.35 √P
800 MHz to 2.5 GHz
d= 0.7 √P
0.01
0.12
0.035
0.07
0.1
0.38
0.11
0.22
1
1.2
0.35
0.70
10
3.8
1.1
2.2
100
12
3.5
7
For transmitters rated at a maximum output which is not listed above, the recommended separation distance d in metres (m) can be
determined using the equation applicable to the respective column, whereby P is the maximum rated output of the transmitter in Watts (W)
according to the transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range is applicable.
NOTE 2 These guidelines may not be applicable in all cases. Electromagnetic propagation is affected by absorption and reflection from
structures, objects and people.