Specifications
Centrella® Smart+ Bed Instructions for Use Manual (193587 REV 10) 139
IMMUNITY to Proximity Fields from Radio Frequency Wireless Communications Equipment
In addition to the Radiated RF IEC 61000-4-3 as shown in the table above, the P7900 and HR and RR Monitoring System
have been tested as specified in the table below.
Test
Frequency
(MHz)
Band
(MHz)
Service Modulation Maximum
Power (W)
Distance (m) Immunity Test
Level (V/m)
385 380-390 TETRA 400 Pulse
modulation
18 Hz
1,8 0,3 27
450 430-470 GMRS 460,
FRS460
FM +
5 kHz devi-
ation
1 kHz sine
20,3 28
710 704-787 LTE Band 13, 17 Pulse
modulation 217
Hz
0,2 0,3 9
745
780
810 800-960 GSM 800/900
TETRA 800,
iDEN 820,
CDMA 850, LTE
Band 5
Pulse
modulation 18
Hz
20,3 28
870
930
1720 1700-1990 GSM 1800;
CDMA 1900;
GSM 1900;
DECT; LTE Band
1,3, 4, 25; UMTS
Pulse
modulation 217
Hz
20,3 28
1845
1970
2450 2400-2570 Bluetooth®
WLAN, 802.11
b/g/n, RFID
Pulse
modulation 217
Hz
20,3 28
5240 5100-5800 WLAN
802.11
a/n
Pulse
modulation 217
Hz
0,2 0,3 9
5500
5785
Recommended Separation Distances between Portable and Mobile RF Communications Equipment and the
P7900 Model and HR and RR Monitoring System
The P7900 and HR and RR Monitoring System are intended for use in an electromagnetic environment in which radi-
ated RF disturbances are controlled. The customer or the user of the P7900 can help prevent electromagnetic interfer-
ence by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters)
and the P7900 as recommended below, according to the maximum output power of the communications equipment.
Rated maximum output
power of transmitter, W
Separation distance according to frequency of transmitter, 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 = 2.33√ P
0.01 0.12 0.12 0.23
0.1 0.38 0.38 0.73
1 1.2 1.2 2.3
10 3.8 3.8 7.3
100 12 12 23
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 maxi-
mum 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.
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