User manual
Version: v4.5.2
Portable radio frequency communications equipment (in-
cluding peripherals such as antenna cables and external an-
tennas) should be used no closer than 30 cm (12 inches)
to any part of the fusionTrack, including cables specified by
Atracsys. Otherwise, degradation of the performance of this
equipment could result, which can lead to wrong measure-
ments, serious injury including death.
Recommended separation distances between portable and mobile RF communications equip-
ment and the fusionTrack
The fusionTrack is intended for use in an environment in which radiated RF disturbances are
controlled. The integrator, the customer or the user of the device can help prevent electro-
magnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the fusionTrack as recommended below, ac-
cording 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
d
= 1
.
2
√
P
80 MHz to 800 MHz
d
= 0
.
35
√
P
800 MHz to 2
.
7 GHz
d
= 0
.
70
√
P
0.01
0.120
0.035
0.070
0.1
0.38
0.11
0.22
1
1.20
0.35
0.70
10
3.8
1.1
2.2
100
12.0
3.5
7.0
For transmitters rated at a maximum output power not listed above, the recommended separation dis-
tance
d
in metres (m) can be determined 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.
Notes:
- At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
- These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption
and reflection from structures, objects and people.
14.1
Essential performances
As the fusionTrack device is only a component for a medical device, the essential performances of the
overall medical device have to be defined and validated by the legal manufacture of the medical device.
14.1.1
Quality of the measurement
The precision, accuracy and trueness of the position measurement of the fusionTrack device depend on a
multitude of factors such as fiducial type (LED, sphere, sticker), marker geometry, working distance, partial
occlusion and many more. In the typical setup that was tested, the quality of the measurement was not
affected by any of the electromagnetic immunity tests stated in Table 14.1. To supervise this immunity, the
parameters shown in Table 14.2 have been evaluated during the electromagnetic immunity tests.
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