Ultrasonix SonixTablet, Руководство по обслуживанию

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Appendix B: Electromagnetic Immunity Tables 00.053.129, Revision C SonixTablet Service Manual
B-2
Table B-3: EN 60601-1-2:2001 (Table 204)
Table B-4: EN 60601-1-2:2001 (Table 206)
Guidance and Manufacturer’s Declaration—Electromagnetic Immunity
The SonixTABLET Ultrasound System is intended for use in the electromagnetic environment specified below. The customer or the user of the
SonixTABLET Ultrasound System should ensure that it is used in such an environment.
Immunity Test IEC 60601 Test Level Compliance Level Electromagnetic Environment-Guidance
Conducted RF
IEC 61000-4-6
Conducted RF
IEC 61000-4-3
3 Vrms
150 kHz to 80 MHz
3 V/m
80 MHz to 2,5 G Hz
3 Vrms
3 V/m
Portable and mobile RF communications equipment should be used no closer to
any part of the SonixTABLET Ultrasound System, including cables, than the
recommended separation distance calculated from the equation applicable to the
frequency of the transmitter.
Recommended separation distances:
150kHz to 80 MHz
80 MHz to 800 MHz
800 MHz to 2,5 GHz
where 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).
Field strengths from fixed RF transmitters, as determined by an electromagnetic
site surveya should be less than the compliance level in each frequency rangeb.
Interference may occur in the vicinity of equipment marked with the following symbol:
Note 1: At 80 MHz and 800 MHz, the higher frequency applies.
Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.
a Field strengths from fixed 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 fixed RF transmitters, an
electromagnetic site survey should be considered. If the measured field strength in the location in which the system is used exceeds the applicable RF com-
pliance level above, the system should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary,
such as reorienting or relocating the system.
a Over the frequency range 150 KHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended Separation Distances Between Portable and Mobile RF Communications Equipment and the System
The SonixTABLET Ultrasound System is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The
customer or the user of the SonixTABLET Ultrasound System can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the system, 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 m
150 kHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 2.5 GHz
0,01 0,12 0,12 0,23
0,1 0,38 0,38 0,73
1 1,2 1,2 2,3
10 3,8 3,8 7,3
100 12 12 23
For transmitters rated at a maximum output power not listed above, the recommended separation distance (d) in meters (m) can be estimated using
the equation applicable to the frequency of the transmitter, where P is the maximum output power rating in watts (W) according to the transmitter
manufacturer.
Note 1: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.
d 1 2 P
,
=
d 1 2 P
,
=
d 2 3 P
,
=
d 1 2 P
,
= d 1 2 P
,
= d 2 3 P
,
=