ResMed VPAP III ST-A User Manual page 25

Guidance and Manufacturer's Declaration - Electromagnetic Emissions
and Immunity
Guidance and manufacturer's declaration – electromagnetic immunity
The VPAP III ST-A with QuickNav is intended for use in the electromagnetic environment specified below. The customer or the
user of the VPAP III ST-A with QcuikNav should assure that it is used in such an environment.
IEC60601-1-2
Immunity test
test level
Electrostatic ±6 kV contact
discharge (ESD) ±8 kV air
IEC 61000-4-2
Electrical fast ±2 kV for power
transient/burst supply lines
IEC 61000-4-4 ±1 kV for input/
output lines
Surge ±1 kV differential
IEC 61000-4-5 mode
±2 kV common
mode
Voltage dips, short <5% Ut
interruptions and (>95% dip in Ut)
voltage variations for 0.5 cycle
on power supply 40% Ut
input lines. (60% dip in Ut)
IEC 61000-4-11 for 5 cycles
70% Ut
(30% dip in Ut)
for 25 cycles
<5% Ut
(>95% dip in Ut)
for 5 sec
Power frequency 3 A/m
(50/60 Hz)
magnetic field
IEC 61000-4-8
Conducted RF 3 Vrms
IEC 61000-4-6 150 kHz to 80
MHz
Radiated RF 10 V/m
IEC 61000-4-3 80 MHz to 2.5
GHz
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.
a
Field 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 III ST-A with QuickNav is used exceeds the applicable RF compliance level above, the VPAP III ST-A with
QuickNav should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary,
such as reorienting or relocating the VPAP III ST-A with QuickNav.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 10 V/m.
Compliance level Electromagnetic environment –guidance
±6 kV contact Floors should be wood, concrete or ceramic tile. If floors
±8 kV air are covered with synthetic material, the relative humidity
should be at least 30%.
±2 kV Mains power quality should be that of a typical commercial
or hospital environment.
Not Applicable
±1 kV differential Mains power quality should be that of a typical commercial
mode or hospital environment.
±2 kV common
mode
< 12 V Mains power quality should be that of a typical commercial
(>95% dip in 240V) or hospital environment.
for 0.5 cycle If the user of the VPAP III ST-A with QuickNav requires
96 V continued operation during power mains interruptions, it is
(60% dip in 240 V) recommended that the VPAP III ST-A with QuickNav be
for 5 cycles powered from an uninterruptible power source.
168 V
(30% dip in 240 V)
for 25 cycles
<12 V
(>95% dip in 240 V)
for 5 sec
3 A/m Power frequency magnetic fields should be at levels
characteristic of a typical location in a typical commercial or
hospital environment.
Portable and mobile RF communications equipment should
be used no closer to any part of the VPAP III ST-A with
QuickNav, including cables, than the recommended
separation distance calculated from the equation applicable
to the frequency of the transmitter.
Recommended separation distance
3 Vrms d = 1.17 √P
10 V/m d = 0.35 √P 80 MHz to 800 MHz
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 metres (m).
Field strengths from fixed RF transmitters, as determined
by an electromagnetic site survey,
compliance level in each frequency range.
Interference may occur in the vicinity of equipment marked
with the following symbol:
a
should be less than the
b
System Specifications 19