Riester ri-vital Mode D'emploi page 35

Test
Voltage drops
Voltage drops
Voltage drops
Power frequency
50/60 Hz
Note: Un is the mains voltage for the test device.
Electromagnetic stability (immunity), portable RF devices
The distance between mobile communication devices and all parts of the device including all cables should not fall below the distance calculated with
the corresponding equation for the frequency of the communication device.
Test
Emitted energy
Grid-bound energy
The field strengths of stationary senders, such as base stations for cellular phones, of land mobile radio, amateur radio, AM and FM radio transmis-
sions and TV broadcasts cannot be predicted.
A site survey should be conducted for assessing the electromagnetic environment of stationary RF transmitters. If the sender's measured field strength
at the device's usage site exceeds the above-mentioned values, then the device's function should be monitored.
If monitoring shows that the device is not functioning properly, corresponding measures must be taken. For example, the device must be realigned or
placed at a different location.
Recommended distances
The following minimum distances are recommended between the device and portable HF communication equipment (e.g., mobile phones):
HF frequency
Equation d=1.2*square root(P)
Nominal power (w)
0.1
1
10
50
P is the nominal power of the transmitter in watts, d is the distance in metres.
Example
At a transmission frequency of 700 MHz and power of 10 watts, a distance of d = 1.2*root(10) = 3.79 m is recommended.
Test step Classification
40% Un (60% See test step
drop in Ut) with
five full
changes
70% Un (30% See test step
drop in Ut) with
25 full
changes
<5% Un (60% See test step
drop in Ut) in
five second
3A/m
3A/m
IEC 60601-1-2 Class
3V/m 3V/m
3V/m 3V/m
3 VRMS 3 VRMS
26Mhz - 80MHz 80MHz - 800 MHz
d=1.2*square root(P) d=2.3*square root(P)
Distance (m) Distance (m)
0.40 0.40
1.20 1.20
3.80 3.80
8.50 8.50
Comment
The mains power should correspond to the power in a typical hos-
pital environment. If uninterrupted operation must absolutely be
guaranteed, then an uninterrupted power supply must be used.
The mains power should correspond to the power in a typical hos-
pital environment. If uninterrupted operation must absolutely be
guaranteed, then an uninterrupted power supply must be used.
The mains power should correspond to the power in a typical hos-
pital environment. If uninterrupted operation must absolutely be
guaranteed, then an uninterrupted power supply must be used.
IEC 61000-4-11
In the event of operating problems, the device must be placed at a
greater distance to the source of the magnetic fields.
IEC 61000-4-8
Distance
Distance = 1.2*square root(power) for 80.. 800 MHz
Distance = 2.3*square root(power) for 800 MHz to 2.5 GHz.
IEC 61000-4-3
Distance = 1.2*square root(power) for 150kHz to 80MHz.
IEC 61000-4-6
800MHz - 2.5 GHz
Distance (m)
0.80
1.20
7.30
16.30
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