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17General Warnings and Cautions
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Guidance and Manufacturer’s Declaration – Electromagnetic Emissions and Immunity
Guidance and manufacturer’s declaration – electromagnetic emissions
The VPAP Auto 25, VPAP ST and VPAP S 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
establishments and those directly connected to
the public low-voltage network that supplies
buildings used for domestic purposes.
RF emissions CISPR 11 with USB adapter Class B
Harmonic Emissions IEC 61000-3-2 Class A
Voltage Fluctuations/Flicker Emissions IEC
61000-3-3
Complies
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
power of transmitter (W)
150 kHz to 80 MHz
d = 1.17 √P
80 MHz to 800 MHz
d = 0.35 √P
800 MHz to 2.5 GHz
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.