9
Operating instructions VENTA Multi Care 16_ 5752 2434
GA 5752 2434 EN 13
58
Electromagnetic compatibility (EMC)
Technical specifications
9.6.4
Recommended protective distances
The following is a table showing the recom-
mended separation distances between porta-
ble and mobile radio telecommunication
equipment and the product.
The product is engineered for use in an electro-
magnetic environment in which radio frequency
interference is monitored. The customer or user
of the product can prevent electromagnetic in-
terference by maintaining the minimum distanc-
es between portable and mobile radio
telecommunication devices (transmitters) and
the product as specified below, in accordance
with the maximum output power of the commu-
nication equipment.
Rated transmission
power [W]
Separation distance as a factor of transmission frequency [m]
150 kHz to80 MHz
80 MHz 800 MHz
800 MHz to 2,5 GHz
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
When dealing with transmitters for which no rated output is indicated in the table above the dis-
tance can be ascertained, using the equation associated with the appropriate column, where P is
the transmitter's maximum rated power in watts (W) as specified by the manufacturer of the trans-
mitter.
Notes:
At 80 MHz and 800 MHz the higher frequency range is applicable. The ISM frequency bands (for
industrial, scientific and medical applications) between 150 kHz and 80 MHz are 6.765 MHz to
6.795 MHz; 13.553 MHz to 13.567 MHz; 26.957 MHz to 27.283 MHz and 40.66 MHz to
40.70 MHz. The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz and
in the 80 MHz to 2.5 GHz band are intended to reduce the probability that mobile and portable
communication devices can cause interference if they are inadvertently brought into the patient ar-
ea. For this reason the additional factor of 10/3 was introduced in calculating the recommended
separation distance in these frequency ranges. These guidelines may not be applicable in all sit-
uations. The propagation of electromagnetic emissions will be affected by the absorptive and re-
flective properties of the structure, objects in the area, fittings and persons.
Fig. 45: Recommended protective distances
d = 1,2 P
d = 1,2 P
d = 2,3 P
