Philips Avalon CTS M2720A Service Manual page 99

Electromagnetic Compatibility (EMC) Specifications
Table 3
IEC 60601-1-2 Frequency Range (where
Test Level Immunity Level is below
over 80 MHz to IEC 60601-1-2 Test Level
2.5 GHz at certain frequencies)
Note: The device meets the compliance level of 3.0 V/m 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 800 MHz to 2.5 GHz, the recommended separation distance in meters (d) is found by the following equation:
3 0 

-------- -
d =

E1
Over the frequency range 800 MHz to 2.5 GHz, the recommended separation distance in meters (d) is found by the following equation:
7 0 

-------- -
d =

E1
3.0 V 270 MHz - 320 MHz
3.0 V 890 MHz - 960 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
E1 = Tested compliance level (in Volts/meter) for the Radiated RF Immunity test IEC 61000-4-3
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.
Radiated RF Immunity Test
EN/IEC 61000-4-3
Known RF Sources
within Frequency
Range
 P
For a compliance level of 3.0 V/m:

 P
For a compliance level of 3.0 V/m:

Commercial radio
service (for example,
aircraft radio)
Commercial radio
service (for example,
GSM cell phones,
WLAN)
Recommended Separation
Worst Case Immunity
Level within
Frequency Range
1.1 V @ 277.499 MHz
0.1 V @ 925.010 MHz
10 Specifications
Electromagnetic
Environment Guidance:
Distance (d)
(in Meters, at Frequency
Range Tested)
for Ultrasound and ECG
Measurements

d = 1 2 P

d = 2 3 P

d = 3 2 P

d = 70 0 P
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