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- Firstly we have to select a series of reference
frequencies and measure the power provided by
the generator in each one of them (the same as in
the previous example).
In this example we have selected the following:
Band
Frequency (MHz)
Return signal
BI
FM
BS-b
BIII-1
BIII-2
DAB
BIV
BIV-BV
BV
FI-1
FI-2
FI-3
FI-4
The fi rst thing we do is calculate the attenuation
for all the sockets. In order to do this we have to
take into account the metres of cable from the
headend up to each of the sockets and the passive
elements (separators and sockets).
The tables with the specifi cations of each of the
installation elements are shown below:
Splitters
Technical specifi cations
Freq. range
20.00
55.25
Attenuation
99.00
120.00
175.25
Attenuation
274.25
210.00
Rejection between
471.25
outputs
607.25
Max. voltage
855.25
Max. current
950.00
1350.00
1750.00
2150.00
543501
MHz
5- 47 MHz
47-862 MHz
950 - 2400 MHz
5- 47 MHz
dB
47-862 MHz
950 - 2400 MHz
5 - 862 MHz
950 - 2400 MHz
V
mA
543602
543702
5-2400
3,5
6,5
8
4,5
7
7,5
5,5
9
9,5
-
6,5
-
-
6,5
-
-
11
-
>15
7
>17
>15
>15
>15
40
300
19
543802
9,5
EN
8,5
9,5 .. 12
10
9,5
9
>15
>15
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