26 Specifications and Standards Compliance
211
Field strengths from fixed transmitters, such as base stations or 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 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, it should be
observed to verify normal operation. If abnormal performance is observed, additional measures may
be necessary, such as reorienting or relocating the device.
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption
and reflection from structures, objects, and people.
If you require further information or assistance, please contact Philips Support.
Recommended Separation Distances from Other RF Equipment
The device is intended for use in an electromagnetic environment in which radiated RF disturbances
are controlled. The customer or user of the device can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment and the
device as recommended below, according to the maximum output power of the communications
equipment.
Note: The device meets the compliance level of 3.0 V
RMS
according to IEC 60601-1-2 over the
specified test frequency range.
Over the frequency range 80 kHz to 800 MHz, the recommended separation distance in meters
(d) is found by the following equation:
For a compliance level of 3.0 V
RMS
:d = 1, 2√P
Over the frequency range 800 kHz to 2.5 GHz, the recommended separation distance in meters
(d) is found by the following equation:
For a compliance level of 3.0 V
RMS
:d = 2, 3√P
Table 4 - Guidance and Manufacturer's Declaration: Electromagnetic Immunity
Radiated RF Immunity Test EN/IEC 61000-4-3
IEC 60601-1-2 Test Level
over 80 MHz to 2.5 GHz
Compliance Level
Electromagnetic Environment
Guidance:
Recommended Separation
Distance (d)
(in Meters, at Frequency Range
Tested)
for Ultrasound and ECG
Measurements
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