User's Manual

User’s Manual for ION-B Systems
Page 24
Manual TFAH-
ES70_80_50.doc
12. Caution: The unit complies with the surge requirement according to EN 61000-4-
5 (fine protection); however, installation of an additional medium (via local supply
connection) and/or coarse protection (external surge protection) is recommended
depending on the individual application in order to avoid damage caused by
overcurrent.
13. Caution: Observe the labels on the front panels before connecting or
disconnecting any cables.
14. Caution: Take care for Class B applications not to exceed the max.radiated
outputpower of 5W (erp).
For example:
The maximum measured RF Power out is 31 dBm per channel,
so the maximum antenna gain (x) can be calculated as follow:
Limit = 5 W (erp) = 37 dBm
37 dBm > 31 dBm + x ------> x = 37 dBm – 31 dBm = 6 dBd
x dBi = 6 dBd + 2.15 = 8.15 dBi
The antenna and cable, that will be used for the complete system, should have a gain lower than 8.15 dBi,
relative to a dipol. The antenna gain was calculated by a cable loss of 0dB.
1 channel with 31dBm
8.15 dBi
2 channel with 28 dBm
11.15 dBi
4 channel with 25 dBm
14.15 dBi
If the cable has a loss of 2dB => the gain of the antenna must be lower than 10.15 dBi
1 channel with 31dBm
10.15 dBi
2 channel with 28 dBm
13.15 dBi
4 channel with 25 dBm
16.15 dBi