Welch Allyn 6702 Mode D'emploi page 34

30 Appendices
Table-9 of IEC60601-1-2, 4th Ed.
Note 1: At 80 MHz and 800 MHz, 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.
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 Welch Allyn Masted Scale is used exceeds the
applicable RF compliance level above, the Welch Allyn Masted Scale should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the Welch
Allyn Masted Scale.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Electromagnetic immunity
27 V/m 27 V/m
380 MHz to 390 MHz 380 MHz to 390 MHz
28 V/m 28 V/m
430 MHz to 470 MHz 430 MHz to 470 MHz
800 MHz to 960 MHz 800 MHz to 960 MHz
1700 MHz to 1990 1700 MHz to 1990
MHz MHz
2400 MHz to 2570 2400 MHz to 2570
MHz MHz
9 V/m 9 V/m
704 MHz to 787 MHz 704 MHz to 787 MHz
5100 MHz to 5800 5100 MHz to 5800
MHz MHz
Welch Allyn Masted Scales
recommended separation distance in meters
(m). Field strengths from fixed RF transmitters,
as determined by an electromagnetic site
a
survey , should be less than the compliance
b
level in each frequency range . Interference
may occur in the vicinity of equipment marked
with the following symbol: