85
absorption and reflection from structures, objects, and
people.
a
Field strengths from fixed transmitters, such as base
stations for radio (mobile/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 device is used exceeds the
applicable RF compliance level above, the device
should be observed to verify normal operation. If
abnormal performance is observed, additional
measures may be necessary, such as reorienting or
relocating the device.
b
Over the frequency range 150 kHz and 80 MHz,
field strengths should be less than 3 V/m.
The device is intended for use in the electromagnetic
environment in which radiated RF disturbances are
controlled. The customer or the user of the device can
help prevent electromagnetic interference by
maintaining a minimum distance between portable
and mobile RF communications equipment
(transmitters) and the device as recommended below,
according to the maximum output power of the
communications equipment.
Содержание 3875
Страница 1: ...St Jude Medical Patient Controller For Deep Brain Stimulation Systems Model 3875 User s Guide ...
Страница 36: ...32 Figure 2 Patient controller features 1 Power button 2 Patient controller Home button ...
Страница 55: ...51 Figure 10 Strength screen 1 Done button 2 Decrease button 3 Increase button ...
Страница 57: ...53 Figure 11 System screen ...
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