Schulte U-3003-E Gebrauchsanweisung Seite 53

Recommended safety distances between portable and
The U-3003 is intended for operation in an electromagnetic environment, in which the RF
interference variables are verified. The customer or user of the U-3003 can help to prevent
electromagnetic interference by complying with the minimum distance between portable and mobile
RF telecommunication equipment (transmitters) and the U-3003 – depending on the power output
of the communication equipment as stated below.
Rated power of the
transmitter in
watts
0.01
0.1
1
10
100
For transmitters whose maximum power rating is not stated in the above table, the recommended
safety distance d in metres can be determined using the equation belonging to the relevant column, in
which P is the maximum rated power of the transmitter in watts (W) according to the transmitter
manufacturer's data.
Note 1: In the case of 80 MHz and 800 MHz, the higher frequency range applies
Note 2: These instructions may not apply in all cases. The propagation of electromagnetic interference
is influenced by absorptions and reflections of buildings, objects and persons.
Test distance for interference resistance of the U-3003 to wireless RF communication devices
Test Frequency
frequency band a)
(MHz) (MHz)
385 380 - 390
450 430 - 470
710
704 –
745
787
780
810
870 800 –
930 960
1720
1700 –
1845
1990
1970
2400 –
2450
2570
5240
5100 –
5500
5800
5785
Note: If necessary, to achieve immunity test levels, the distance between the transmitting antenna and the
ME device or the ME system can be reduced to 1 metre. The 1 m test distance is permitted according to
IEC 61000-4-3.
a) For some radio services, only the frequencies for the radio circuit from the mobile communication
device to the base station (uplink) have been included in the table.
b) The carrier must be modulated with a Square wave signal with 50% duty cycle
c) Alternatively to the frequency modulation (FM), a pulse modulation with 50% duty cycle at 18 Hz can
be used, as this, although not the actual modulation, would represent the worst case scenario.
mobile RF telecommunication equipment and the U-3003
Safe clearance in metres depending on the transmission frequency
150 KHz – 80 MHz
0.12
0.38
1.2
3.8
12
Service a)
TETRA 400
GMRS 460,
FRS 460
LTE Band 13, 17
GSM 800 /900,
TETRA 800, iDEN
820, CDMA 850,
LTE Band 5
GSM 1800, CDMA
1900, GSM 1900,
DECT, LTE Band 1,
3, 4, 25, UMTS
Bluetooth, WLAN
802.11 b/g/n, RFID
2450,
LTE Band 7
WLAN 802.11 a/n
80 MHz – 800 MHz
0.12
0.38
1.2
3.8
12
Max.
Modulation b) power
(W)
Pulse modulation
1,8
b) 18 Hz
FM c) ± 5 kHz
2
1 kHz Sinus
Pulse
modulation 0,2
b)
217 Hz
Pulse
modulation 2
b)
18 Hz
Pulse
modulation 2
b)
217 Hz
Pulse
modulation 2
b)
217 Hz
Pulse
modulation 0,2
b)
217 Hz
page 23
800 MHz – 2,5 GHz
0.24
0.76
2.4
7.6
24
Distance Immunity test level
(m) (V/m)
0,3 27
0,3 28
0,3 9
0,3 28
0,3 28
0,3 28
0,3 9