ResMed VPAP IV ST manual General Warnings and Cautions

Guidance and Manufacturer’s Declaration – Electromagnetic Emissions and Immunity

Guidance and manufacturer’s declaration – electromagnetic emissions

The VPAP IV and VPAP IV ST devices are 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.

Emissions test	Compliance	Electromagnetic environment – guidance
RF emissions CISPR11	Group 1	The VPAP device uses RF energy only for its
		internal function. Therefore, its RF emissions are
		very low and are not likely to cause any
		interference in nearby electronic equipment.
RF emissions CISPR 11 with serial adapter	Class B	The VPAP device is suitable for use in all
		establishments, including domestic
RF emissions CISPR 11 with USB adapter	Class B	establishments and those directly connected to
		the public low-voltage network that supplies
Harmonic Emissions IEC 61000-3-2	Class A	buildings used for domestic purposes.
Voltage Fluctuations/Flicker Emissions IEC	Complies
61000-3-3

Warnings: The VPAP device should not be used adjacent to or stacked with other equipment.

If adjacent or stacked use is necessary, the VPAP device should be observed to verify normal operation in the configuration in which it will be used. The use of accessories (eg, humidifiers) other than those specified in this manual is not recommended. They may result in increased emissions or decreased immunity of the VPAP device.

Recommended separation distances between portable and mobile RF communications equipment and the VPAP series of devices

The VPAP device is intended for use in an environment in which radiated RF disturbances are controlled. The customer or the user of the VPAP device can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the VPAP device as recommended below, according to the maximum output power of the communications equipment.

Separation distance according to frequency of transmitter (m)

Rated maximum output	150 kHz to 80 MHz	80 MHz to 800 MHz	800 MHz to 2.5 GHz
power of transmitter (W)	d = 1.17 √P	d = 0.35 √P	d = 0.7 √P
0.01	0.17	0.04	0.07
0.1	0.37	0.11	0.22
1	1.17	0.35	0.7
10	3.69	1.11	2.21
100	11.70	3.50	7.0

For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres (m) can be determined using the equation applicable to the frequency of the transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer.

NOTE 1: At 80 MHz and 800 MHz, the separation distance for 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.

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General Warnings and Cautions 17