Otto Bock 743A250, Instructions For Use Manual

Page: 51 / 56

NOTE 2: These directives may not be applicable in all cases. The propagation of electromagnetic factors is influ­
enced by absorption and reflection by buildings, objects and people.
a
The field strength of stationary transmitters such as base stations of mobile phones and mobile land radio equip­
ment, amateur radio stations, AM and FM radio and television stations cannot be precisely determined theoretic­
ally in advance. To determine the electromagnetic environment with regard to stationary transmitters, a study of
electromagnetic phenomena at the site should be considered. If the measured field strength at the location where
the 743A250 Bionic Pro product is used exceeds the above compliance level, the 743A250 Bionic Pro product
should be monitored to confirm it is functioning as intended. If unusual performance characteristics are observed,
additional measures may be required such as repositioning the 743A250 Bionic Pro product or moving it to a dif­
ferent location.
b
Within the frequency range of 150 kHz to 80 MHz, the field strength should be less than 3 V
eff
.
Recommended safety distances between portable and mobile HF telecommunication equipment and the
743A250 Bionic Pro product
The 743A250 Bionic Pro product is designed for operation in an electromagnetic environment where HF interfer­
ence is controlled. The customer or user of the product can help prevent electromagnetic interference by main­
taining the minimum distance – which depends on the output of the telecommunication device as specified below
– between portable and mobile HF telecommunication equipment (transmitters) and the product.
Nominal output of trans­
mitter
M
Safety distance depending on the transmission frequency
M
150 kHz to 80 MHz
d = 1.2√P
80 MHz to 800 MHz
d = 1.2√P
800 MHz to 2.5 GHz
d = 2.4√P
0.01 0.12 0.12 0.23
0.1 0.38 0.38 0.76
1 1.2 1.2 2.3
10 3.8 3.8 7.3
100 12 12 23
For transmitters with no maximum nominal output specified in the table above, the recommended safety distance
d in metres (m) can be determined using the equation in the respective column, where P stands for the maximum
nominal output of the transmitter in watts (W) according to the transmitter manufacturer’s information.
NOTE 1: The higher frequency range applies at 80 MHz and 800 MHz.
NOTE 2: These directives may not be applicable in all cases. The propagation of electromagnetic factors is influ­
enced by absorption and reflection by buildings, objects and people.
Test frequencies with which the product has been tested
Test fre­
quency
(MHz)
Frequency
band
(MHz)
Mobile com­
munications
standard
Modulation Maximum
output
(W)
Distance
(m)
Interference
immunity lim­
it values
(V/m)
385 380–390 TETRA 400 Pulse modula­
tion
18 Hz
1.8 0.3 27
450 430–470 GMRS 460,
FRS 460
FM
± 5 kHz
Deviation
1 kHz sine
2 0.3 28
710
745
780 704–787 LTE band 13,
17
Pulse modula­
tion
217 Hz
0.2 0.3 9
810
870
930 800–960 GSM 800/900,
TETRA 800,
iDEN 820,
CDMA 850,
LTE band 5
Pulse modula­
tion
18 Hz
2 0.3 28
1,720
1,845 1,700–1,990 GSM 1800;
CDMA 1900;
Pulse modula­
tion
2 0.3 28
51 743A250 Bionic Pro
Technical data