User's Manual
53
IEC 61000-4-5
± 1 kV differential
mode
± 2 kV common mode
± 1 kV differential
mode
± 2 kV common mode
that of a typical commercial or
hospital environment.
Voltage dips, short
interruptions and
voltage variations
on power supply
input lines
IEC 61000-4-11
0 % UT; 0,5 cycle g)
At 0°, 45°, 90°, 135°,
180°, 225°, 270° and
315°
0 % UT; 1 cycle and
70 % UT; 25/30 cycles
Single phase: at 0°
0 % UT; 250/300 cycle
0 % UT; 0,5 cycle g)
At 0°, 45°, 90°, 135°,
180°, 225°, 270° and
315°
0 % UT; 1 cycle and
70 % UT; 25/30 cycles
Single phase: at 0°
0 % UT; 250/300 cycle
Mains power quality should be
that of a typical commercial or
hospital environment. If the
user of the Pulmonary Function
Tester（A9）requires continued
operation during power mains
interruptions, it is
recommended that the
Pulmonary Function Tester
（ A9） be powered from an
uninterruptible power supply or
a battery.
Power frequency
(50/60 Hz)
magnetic field
IEC 61000-4-8
30 A/m
30 A/m
Power frequency magnetic
fields should be at levels
characteristic of a typical
location in a typical commercial
or hospital environment.
NOTE U
T
is the a. c. mains voltage prior to application of the test level.
Table 3
Guidance and manufacturer´s declaration – electromagnetic immunity
The Pulmonary Function Tester（A9）is intended for use in the electromagnetic environment specified
below. The customer or the user of the Pulmonary Function Tester（A9）should assure that it is used in
such an environment.
Immunity test
IEC 60601 test
level
Compliance level
Electromagnetic environment -
guidance
Conducted RF
IEC 61000-4-6
Radiated RF
3 Vrms
150 kHz to 80 MHz
6 V in ISM and
amateur radio bands
between 0,15 MHz
and 80 MHz
3 V/m
3 Vrms
150 kHz to 80 MHz
6 V in ISM and
amateur radio
bands between 0,15
MHz and 80 MHz
3 V/m
Portable and mobile RF
communications equipment should be
used no closer to any part of the
Pulmonary Function Tester （ A9 ） ,
including cables, than the recommended
separation distance calculated from the
equation applicable to the frequency of
the transmitter.
Recommended separation distance
P
V
d ]
5.3
[
1
P
V
d
]
12
[
2