Cooper Surgical F9 Express, Руководство пользователя

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F9 Fetal & Maternal Monitor • User Manual
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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 F9 Monitor is used exceeds the applicable RF compliance
level above, the F9 Monitor should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as reorienting or relocating
the F9 Fetal Monitor.
b)
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
NOTE: During the test of inject current, when the test level is 3 Vrms, the heart rate parameter displaying
on the screen changes and has great difference with setting level, when reduce the test level to 1
Vrms, all parameters and functions are working properly. So the compliance level is 1 Vrms.