Table 1 Recommended Safety Distance
Nominal power,
P, of transmitter,
measured in watts
[W]
Recommended safety distance, d, expressed in meters, based on the
nominal transmitter power and transmission frequency
150kHz – 80MHz
d=3.5/3 √P
80Mhz – 80MHz
d=3.5/3 √P
800MHz – 2.5GHz
d=3.5/3 √P
0.01
0.12
0.12
0.23
0.1
0.37
0.37
0.74
1
1.2
1.2
2.3
10
3.7
3.7
7.4
100
12
12
23
For transmitter whose maximum nominal power is not specified, the recommended safety
distance can be determined by use of the formulas above.
Table 2 Electromagnetic Compatibility 1
Guidelines and manufacturer’s declaration – resistance to electromagnetic interference
The aScope™ Duodeno is intended for operation in the electromagnetic environment
specified below. The user of the aScope™ Duodeno should ensure that is used in such an
environment.
Electromagnetic
compatibility testing
IEC 60601 test level
Compliance level
Electromagnetic
Environment
Guidelines
Electrostatic dischar
-
ge (ESD) according to
IEC 61000 – 4 – 2
± 8 kV contact
discharge
± 15 kV air discharge
± 8 kV contact
discharge
± 15 kV air discharge
Floors should be
wood or concrete or
covered with ceramic
tiles. If the floor is a
synthetic material,
the relative humidity
must be at least 30%.
Fast transient
electric interference
(burst) according to
IEC 61000 - 4 – 4
± 2 kV for power
lines
± 2 kV for power lines The quality of the
power supply voltage
must correspond
to a typical hospital
or business power
supply.
Voltage drops,
temporary power
outages, and
variations in the
power supply voltage
according to IEC
61000 – 4 – 11
0% reduction during
0,5 cycle
0% reduction during
1 cycle
70% reduction
during 25 cycles
0% during 250 cycles
0% reduction for 2ms
(drop)
0% reduction for 4ms
(drop)
70% reduction for
500 ms (drop)
>95% reduction for
10 ms (drop)
The quality of the
power supply voltage
must correspond
to a typical hospital
or business power
supply.
If the user requires
continued functiona
-
lity even after failure
of the power supply,
we recommend
operating the aScope
Duodeno from an un-
interruptible power
supply.
24
