User's Manual
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Tobii C-Series User’s Manual
a. Field strengths from xed 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 xed RF transmitters, an electromagnetic site survey should be
considered. If the measured eld strength in the location in which the C-Series device
is used exceeds the applicable RF compliance level above, the C-Series device should be
observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as reorienting or relocating the C-Series device.
b. Over the frequency range 150 kHz to 80 MHz, eld strengths should be less than 3 V/m.
Recommended separation distances between portable and mobile RF (Radio
Frequency) communications equipment and the C-Series device.
The C-Series device is intended for use in the electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the C-Series device can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile
RF communication equipment (transmitters) and the C-Series device 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
150 kHz to 80 MHz 80 MHz to 800
MHz
800 MHz to 2.5
GHz
0.01 0.12 m 0.12 m 0.24 m
0.1 0.37 m 0.37 m 0.74 m
1 1.2 m 1.2 m 2.4 m
10 3.7 m 3.7 m 7.4 m
100 11. 7 m 11. 7 m 23.4 m
Under test specications specied in 6.2.1.10 EN 60 601-1-2 (2007) the
C-Series device shall not:
• Exhibit component failure
• Exhibit changes in its programmable parameters
• Reset unintentionally to factory defaults
• Emit false alarms
• Initiate any unintended operation, even if accompanied by alarm
Chapter 8 Appendices