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| Immunity test | IEC 60601 test | Compliance | Electromagnetic |
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| level | level | environment/guidance |
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| Voltage dips, short | < 5% UT | < 5% UT | Mains power quality should |
| interruptions, and | (>95% dip in UT) | (>95% dip in UT) | be that of a typical |
| voltage variations | for 0.5 cycle | for 0.5 cycle | commercial or hospital |
| on power supply | 40% UT | 40% UT | environment. If the user |
| input lines | of the Portable Oxygen | ||
| (60% dip in UT) | (60% dip in UT) | ||
| IEC | Concentrator required | ||
| for 5 cycles | for 5 cycles | ||
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| continued operation during | ||
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| 70% UT | 70% UT | |
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| power main interruptions, | ||
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| (30% dip in UT) | (30% dip in UT) | it is recommended that the |
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| for 25 cycles | for 25 cycles | concentrator be powered |
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| <5% UT | <5% UT | from an uninterruptible |
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| (>95% dip in UT) | (>95% dip in UT) | power supply or battery. |
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| for 5 sec | for 5 sec |
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| Power frequency | 3 A/m | 3 A/m | Power frequency magnetic |
| (50/60 Hz) magnetic |
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| fields should be at levels |
| field |
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| characteristic of a typical |
| IEC |
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| commercial or hospital |
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| environment. |
Conducted RF | 3 Vrms 150 kHz | 3 Vrms |
IEC | to 80 Mhz |
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Radiated RF | 20 V/m 80 Mhz | 20 V/m |
IEC | to 2.5 Ghz |
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Note: At 80 MHz and 800 MHz, the higher frequency range applies.
Note: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects, and people.
aField 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 Portable Oxygen Concentrator is used exceeds the applicable RF compliance level above, the concentrator should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the concentrator.
bOver the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Portable and mobile RF communications equipment should be used no closer to any part of the Portable Oxygen Concentrator, including cables, than the recommended separation distance calculated from the equation applicable to the frequency of the transmitter.
Recommended separation distance:
d = 1.2 √P
d = 1.2 √P 80 MHz to 800 MHz
d = 2.3 √P 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:
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