62
Chapter 9
TECHNICAL DATA
rated power of the
ratio transmitter
W
Separation distance according to frequency of transmitter
m
Recommended separation distances between portable and mobile
RF communications equipment and the Space System
The Space System is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the Space System or component can help
prevent electromagnetic interference by maintaining a minimum distance between portable and
mobile RF communications equipment (transmitters) and the Space System as recommended below,
according to the maxi-mum output power of the communications equipment
150 kHz bis 80 MHz
1,2
√
P
80 MHz bis 800 MHz
1,2
√
P
800 MHz bis 2,5 GHz
2,3
√
P
NOTE 1:
For transmitters rated at a maximum power output not listed above, the recommended
separation distance (d) in meters (m) can be determined using the equation applicable to the
frequency of the transmitter, where (P) is the maximum output power rating of the transmit-ter in
watts (W)
according to the transmitter manufacturer.
NOTE 2:
An additional factor of 10/3 is used in calculating the recommended separation distance for
transmitters in the frequency range 0.15 MHz to 2.5 GHz to decrease the likelihood that mobile/
portable communications equipment could cause interference if it is inadvertently brought into
patient areas.
NOTE 3:
These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
0,01
0,12
0,23
0,1
0,38
0,73
1
1,2
2,3
10
3,8
7,27
100
12
0,12
0,38
1,2
3,8
12
23
NOTE 3:
Different test values of IEC 60601-2-24 are marked in the table. At these test values no
dangerous disturbances are allowed while at the lower test values of IEC 60601-1-2. Field strengths
from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile
radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically
with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an electro-
magnetic site survey should be considered. If the measured field strength in the location in which the
SpaceSystem is used exceeds the applicable RF compliance level above, the Space System should be
observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as re-orienting or relocating the Space System.