ResMed ST, AUTO 25 manual

Guidance and manufacturer’s declaration – electromagnetic immunity

The VPAP device is intended for use in the electromagnetic environment specified below. The customer or the user of the VPAP device should assure that the device is used in such an environment.

Immunity test	IEC60601-1-2 test	Compliance level	Electromagnetic environment – guidance
	level
Electrostatic	±6 kV contact	±6 kV contact	Floors should be wood, concrete or ceramic tile. If
discharge (ESD)	±8 kV air	±8 kV air	floors are covered with synthetic material, the relative
IEC 61000-4-2			humidity should be at least 30%.
Electrical fast	±2 kV for power	±2 kV	Mains power quality should be that of a typical
transient/burst	supply lines		commercial or hospital environment.
IEC 61000-4-4	±1 kV for input/	Not Applicable
	output lines
Surge	±1 kV differential	±1 kV differential	Mains power quality should be that of a typical
IEC 61000-4-5	mode	mode	commercial or hospital environment.
	±2 kV common	±2 kV common
	mode	mode
Voltage dips, short	<5% Ut (>95% dip in	< 12V (>95% dip in	Mains power quality should be that of a typical
interruptions and	Ut) for 0.5 cycle	240V) for 0.5 cycle	commercial or hospital environment.
voltage variations	40% Ut (60% dip in	96V (60% dip in	If the user of the VPAP device requires continued
on power supply	Ut) for 5 cycles	240V) for 5 cycles	operation during power mains interruptions, it is
input lines.	70% Ut (30% dip in	168V (30% dip in	recommended that the VPAP device be powered from
IEC 61000-4-11	Ut) for 25 cycles	240V) for 25 cycles	an uninterruptible power source.
	<5% Ut (>95%dip in	<12V (>95%dip in
	Ut) for 5 sec	240V) for 5 sec
Power frequency	3 A/m	3 A/m	Power frequency magnetic fields should be at levels
(50/60Hz) magnetic			characteristic of a typical location in a typical
field IEC 61000-4-8			commercial or hospital environment.
			Portable and mobile RF communications equipment
			should be used no closer to any part of the VPAP
			device, including cables, than the recommended
			separation distance calculated from the equation
			applicable to the frequency of the transmitter.
			Recommended separation distance
Conducted RF	3 Vrms	3 Vrms	d = 1.17 √P
IEC 61000-4-6	150 kHz to 80 MHz
Radiated RF	10 V/m	10 V/m	d = 0.35 √P 80 MHz to 800 MHz
IEC 61000-4-3	80 MHz to 2.5 GHz		d = 0.70 √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 survey,a
			should be less than the compliance level in each
			frequency range.b
			Interference may occur in the vicinity of equipment
			marked with this symbol	.

NOTE 1: Ut is the AC mains voltage prior to application of the test level.

NOTE 2: At 80 MHz and 800 MHz, the higher frequency range applies.

NOTE 3: 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 VPAP device is used exceeds the applicable RF compliance level above, the VPAP device should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or relocating the VPAP device.

b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 10 V/m.

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