12 - ENG PN 13402391 D | User Manual
EMS 20
Table 2*
Recommended separation distances between portable and mobile
RF communications equipment and the EMS 20
The EMS 20 is intended for use in an electromagnetic environment in which radiated RF disturbances
are controlled. The customer or the user of the EMS 20 can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmit-
ters) and the EMS 20 as recommended below, according to the maximum output power of the communi-
cations equipment.
Rated maximum output Separation distance according to frequency of transmitter
power of transmitter
m
W
150 kHz to 80 MHz
80 MHz and 800 MHz
800 MHz to 2,5 GHz
d=1.2
√
P d=1.2
√
P
d=2.3
√
P
0,01
0.12 m
0.12 m
0.23 m
0,1
0.38 m
0.38 m
0.73 m
1
1.2 m
1.2 m
2.3 m
10
3.8 m
3.8 m
7.3 m
100
12 m
12 m
23 m
For transmitters rated at a maximum output power not listed above, the recommended separation distance
(d) in meters (m) can be estimated 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.
NOTE 1 at 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
* This table is included as a standard requirement for equipment which has been tested to specific test
levels and over specific frequency ranges and been found compliant with regulations.
Table 3
Guidance and manufacturers declaration—electromagnetic immunity
The EMS 20 is intended for use in the electromagnetic environment specified below. The customer or
the user of the EMS 20 should assure that it is used in such an environment.
Immunity test
IEC 60601 test level
Compliance level
Electromagnetic environment—guidance
Electrostatic
+- 8kV Contact
+- 8kV Contact
Floors should be wood, concrete or ceramic
discharge (ESD)
+- 2 kV, +-4 kV,
+- 2 kV, +-4 kV,
tile. If floors are synthetic, the relative
IEC 61000-4-2
+- 8 kV, +- 15 kV air
+- 8 kV, +- 15 kV air humidity should be at least 30%.**
Electrical fast
±2 kV for power
Not applicable
Not applicable
transient/burst
supply lines
DC powered device
IEC 610004-4
±1 kV for
Not applicable
input/output lines No data input/output lines
Surge
±1 kV line(s) to line(s)
Not Applicable
Not Applicable
IEC 61000-4-5
±2 kV line(s) to earth
DC powered device
Voltage dips,
<5% UT (>95% dip in UT)
short interruptions
for 0,5 cycle
and voltage
40% UT (60% dip in UT)
Not Applicable
Not Applicable
variations on
for 5 cycles
DC powered
power supply
70% UT (30% dip in UT)
device
input lines
for 25 cycles
IEC 61000-4-11 <5% UT (>95% dip in UT) for 5 sec
Power frequency
30 A/m
30 A/m
Power frequency magnetic fields should be
(50/60 Hz)
50/60 Hz
50/60 Hz
that of a typical commercial or hospital
magnetic field
environment.
IEC 61000-4-8
Note: UT is the a.c. mains voltage prior to application of the test level.
** This statement indicates that the required testing was performed in a controlled environment and the
EMS 20 are found to be compliant with regulations.
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