1. The ISM (industrial, scientific, and medical radio) band between 150 kHz and 80 MHz
refers to 6.765 MHz-6.795 MHz, 13.553 MHz-13.567 MHz, 26.957 MHz-27.283 MHz, and
40.66 MHz-40.70 MHz.
2. The compliance level in the ISM band between the 150 kHz-80 MHz and the 80
MHz-2.5 GHz frequency range is used to reduce the possibility of interference when
mobile/portable communication devices are accidentally brought into the patient area. For
this purpose, the additional factor 10/3 is used to calculate the recommended separation
distance of the transmitter over these frequency ranges.
3. The field strength of fixed transmitters such as base stations of wireless
(cellular/cordless) phones and terrestrial mobile radios, amateur radios, AM and FM radio
broadcasts and TV broadcasts, can not be accurately predicted theoretically. To evaluate the
electromagnetic environment of a fixed RF transmitter, the survey of the electromagnetic
field should be considered. If the field strength of the site where the Defibrillator Monitor is
located is measured to be higher than the applicable RF level, the defibrillator monitor
should be observed to verify that it is functioning properly. If abnormal performance is
observed, additional measures may be necessary, such as reorienting or repositioning the
defibrillator monitor.
4. The field strength should be less than 3 V/m over the entire frequency range of 150
kHz-80 MHz.
The Defibrillator Monitor is intended for use in an electromagnetic environment where RF
radiation is controlled. Depending on the maximum output power of the communication
equipment, the purchaser or user of the Defibrillator Monitor can prevent electromagnetic
interference by maintaining a minimum distance between the portable and mobile RF
communication equipment (transmitters) and the defibrillator monitor.
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