I.E.M. Tel-O-Graph GSM - Recommended Safety Distances

Manufacturer’s EMC guidelines
46
Recommended safety distances between portable and mobile HF telecommunication devices and the Tel-
O-Graph
®
GSM
The Tel-O-Graph
®
GSM is designed for operation in an electromagnetic environment in which disturbance
variables are controlled. Maintain the minimum distances between portable and mobile telecommunication devices
(transmitters) and the measuring device as specified below, depending on the output of the communication
device.
Safety distance in relation to transmission frequency in m
Nominal output of
transmitter P in W
80 Mhz to 800 Mhz
d = 1.2 * P(W)
800 Mhz to 2,5 Ghz
d = 2.3 * P(W)
80 kHz to 80 MHz
0.01
0.12
0.23
Not applicable
0.1
0.38
0.73
Not applicable
1
1.2
2.3
Not applicable
10
3.8
7.3
Not applicable
100
12
23
Not applicable
The recommended safety distance (d) can be calculated in metres (m) for transmitters whose maximum nominal
output is not specified in the table above. This is achieved by using the equation for the column in question, where
P is the maximum nominal output of the transmitter.
NOTE 1: The higher frequency range applies for 80 MHz and 800 MHz.
NOTE 2: These guidelines may not apply in all cases. The distribution of electromagnetic variables is influenced
by the absorption and reflection of buildings, objects and people.