22
communication equipment.
Nominal power of the
transmitter
W
Safety distance that applies to the transmitter frequency
m
150 kHz to 80 MHz
Not applicable
80 MHz to 1000 MHz
d
= 1.2
P
1400 MHz to 2.5GHz
d
= 2.3
P
0.01
0.12
0.23
0.1
0.38
0.73
1
1.2
2.3
10
3.8
7.3
100
12
23
For transmitters whose nominal power is not indicated in the table above, the distance can be determined using
the equation belonging to the respective column, where P is the nominal power of the transmitter in Watts (W)
as specified by the manufacturer of the transmitter.
Note 1: At 80 MHz and 1400 MHz, the distance for the higher frequency range applies.
Note 2: These guidelines may not apply in all situations. The propagation of electromagnetic waves is influenced
by reflection and absorption by buildings, objects and people.
Interference is possible in the vicinity of
equipment marked with the following symbol
Note 1: At 80 MHz and 800 MHz, the higher value applies.
Note 2: These guidelines may not apply in all situations. The propagation of electromagnetic waves is influenced
by reflection and absorption by buildings, objects and people.
a
The field strength of stationary transmitters, such as base stations of wireless telephones and mobile field
radio services, amateur radio stations, AM and FM radio and television transmitters cannot be precisely
determined theoretically in advance. In order to determine the electromagnetic environment due to stationary
HF transmitters, an investigation of the location is advisable. If the field strength determined at the location of
the ri-scope® L exceeds the compliance level indicated above, then the ri-scope® L must be monitored with
regard to its normal operation at each place where it is used. If unusual performance characteristics are
observed, additional measures such as re-alignment of the ri-scope® L or its removal to another place may be
necessary.
b
In the frequency range of 150 kHz to 80 MHz, the field strength should be smaller than 3 V/m.
Recommended safety distances between portable and mobile HF communication devices and the ri-
scope® L
The ri-scope® L is intended for operation in an electromagnetic environment in which the radiated HF
interference is monitored. The customer or user of the ri-scope® L can help prevent electromagnetic
interference by observing minimum distances between portable and mobile HF communication equipment
(transmitters) and the ri-scope® L as recommended below, depending on the maximum output power of the
<5% U
T
(>95 % drop in U
T
)
for 5 s
Magnetic field at the mains
frequency (50Hz)
according to IEC61000-4-8
3 A/m
3 A/m
If image disturbances occur, the
ri-scope® L may have to be
placed further away from the
sources of mains-frequency
magnetic fields, or magnetic
shielding may have to be
installed: the mains-frequency
magnetic field should be
measured at the intended set-up
site in order to ensure that it is
small enough.
Note - U
T
is the alternating supply voltage prior to application of the test level.
Guidelines and manufacturer's declaration - electromagnetic immunity
The ri-scope® L model is intended for operation in the electromagnetic environment specified below. The
customer or the user of the ri-scope® L should ensure that it is used in such an environment.
Immunity test
IEC 60601
test level
Compliance level
Electromagnetic environment - guidelines
Conducted HF
interference
according to
IEC61000-4-6
Radiated HF
erference
cording to
C61000-4-3
3 Vrms
150 kHz to 80MHz
3 V/m
80 MHz to 2.5GHz
Not applicable
10 V/m
3 V/m
Portable and mobile radio equipment should
not be used within a distance from the ri-
scope® L, including cables, that is less than
the recommended safety distance as
calculated by the equation that is appropriate
for the transmission frequency.
Recommended safety distance:
d
= 1.2
P
d
= 1.2
P 80 MHz to 1000 MHz
d
= 2.3
P 1400 MHz to 2.5 GHz
where P is the nominal power of the
transmitter in Watts (W) as specified by the
manufacturer of the transmitter, and d is the
recommended safety distance in meters (m).
The field strength of stationary radio
transmitters should be less than the
compliance level
b
at all frequencies as
verified by an on-site test
a
