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Recommended separation distances between portable and mobile RF communications
equipment and the device
The device is intended for use in an environment in which radiated RF disturbances are controlled.
The customer or the user of the device can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the device as recommended below, according to the maximum output power of
the communications equipment.
Rated maximum output
power of transmitter
(W)
Separation distance according to frequency of transmitter (m)
150 kHz to 80 MHz
d = 0.35 √P
80 MHz to 800 MHz
d = 0.35 √P
800 MHz to 2.5 GHz
d = 0.7 √P
0.01
0.035
0.035
0.070
0.1
0.11
0.11
0.22
1
0.35
0.35
0.70
10
1.1
1.1
2.2
100
3.5
3.5
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.
Notes:
•
At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
•
These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
Symbols
The following symbols may appear on the product or packaging.
Read instructions before use.
Indicates a warning or caution.
Follow instructions before
use. Manufacturer.
European Authorised Representative.
Batch code.
Catalogue number.
Serial number.
Device number. On / Off. Device weight.
Protected against finger sized objects and against dripping water when tilted up to 15 degrees
from specified orientation.
Direct current.
Type BF applied part.
Class II equipment.
Humidity limitation.
Temperature limitation.
Non-ionising radiation.
China pollution
control logo 1.
China pollution control logo 2.
Prescription only (In the US, Federal
law restricts these devices to sale by or on the order of a physician).
Maximum
water level.
Use distilled water only. Operating altitude.
Atmospheric pressure
limitation.
Complies with RTCA DO-160 section 21, category M.
MR unsafe (do not use in
the vicinity of an MRI device).
Date of manufacture.
Importer.
Medical device.
See symbols glossary at ResMed.com/symbols.
