Philips Avalon CTS M2720A, Руководство по обслуживанию

Страница: 98 / 110

10 Specifications Electromagnetic Compatibility (EMC) Specifications
92
Finding Recommended Separation Distances
WARNING
The device intentionally receives RF electromagnetic energy for the purpose of its operation. Therefore,
other equipment may cause interference, even if that other equipment complies with CISPR emission
requirements.
In the following table, P is the maximum output power rating of the transmitter in watts (W) according to
the transmitter manufacturer, and d is the recommended separation distance in meters (m).
Portable and mobile RF communications equipment should be used no closer to any part of the device,
including cables, than the recommended separation distance calculated from the equation appropriate for
the frequency of the transmitter.
Field strengths from fixed RF transmitters, as determined by an electromagnetic site survey, should be less
than the compliance level in each frequency range.
Interference may occur in the vicinity of equipment marked with this symbol:
Table 2
Conducted RF Immunity Test
EN/IEC 61000-4-6
IEC 60601-1-2
Test Level
over 150 kHz
to 80 MHz
Frequency Range
(where Immunity
Level is below IEC
60601-1-2 Test Level at
certain frequencies)
Known RF Sources
within Frequency
Range
Worst Case
Immunity Level
within Frequency
Range
Electromagnetic
Environment Guidance:
Recommended
Separation Distance ( d )
(in Meters, at Frequency
Range Tested)
for Ultrasound and ECG
Measurements
Note: The device meets the compliance level of 3.0 V
RMS
according to IEC 60601-1-2 for most of the specified test frequency range.
However, within the frequency ranges specified in this table, there are some frequencies at which the immunity level is below the IEC
60601-1-2 test level. Within each frequency range, the worst case immunity level is given. Over the frequency range 150 kHz to 80
MHz, the recommended separation distance in meters (
d ) is found by the following equation:
3.0 V 0.5 MHz - 1.6 MHz Medium Wave (AM)
radio stations 0.1 V @ 1.003 MHz
Key:
d = Recommended separation distance in meters (m)
P = maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer
V 1 = Tested compliance level (in Volts) for the Conducted RF Immunity test IEC 61000-4-6
d
3 5

V 1
---------
 
 
P =
For a compliance level of 3.0 V
RMS
:
d 1 2 P

=
d 35 0 P

=