TechniSat TechniRouter 9/2x4 G Benutzerhandbuch
Seite 48
48
2237174000100
EN
9 Calculating Aid for Coverage Calculations in the Satellite Area
Gain of the Sat signal
from the input
after the Router
„Loop“-
resistance
Voltage
drop
20m Multimedia cable
-5..-8.4 dB
1)
trunk
0.16 Ω
2)
0.06 V
(at I=0.4 A)
Trunk of a 9/X K
with 5 m Multimedia cable
-4 ... -7dB
0.1 Ω
2)
0,04 V
(at I=0.4 A)
Tap TechniRouter 9/X,
30 m 100 dB or 120 dB cable,
7 sockets as tree distribution
(up to tap-output of the
seventh 10 dB-socket)
-20 dB
-36 dB
(-44 dB
3)
are possible)
1.5 V
at I=0.4 A)
Tap 9/2A
trunk
junction
-1…-1.5 dB
+1…+5 dB
--
Passive distributor 9P
-3.8 dB
--
Intermediate amplifier 9Z
+7…+12 dB
--
1)
Value at the lower ... upper band limit
2)
At the root, the resistance, due to DC permeable parallel switching of 8 individual coaxial cables, is smaller then that of one individual cable.
3)
73 dBµV from the LNB and 20m conduction provided for.
Loss (dB / x Meter) applicable cable types
Type
100 dB cable or
120dB premium-cable
Mini-CoaxSat 2150- or
multimedia-cable
length
at frequency / MHz
30
300
860
2150
30
300
860
2150
10 m
0.3
1
1.8
3
0.5
1.5
2.5
4.2
20 m
0.6
2
3.6
6
1
3
5
8.4
30 m
0.9
3
5.4
9
1.5
4.5
7.5
12.6
40 m
1.2
4
7.2
12
2
6
10
16.8
50 m
1.5
5
9
15
2.5
7.5
12.5
21
60 m
1.8
6
10.8
18
70 m
2.1
7
12.6
21
Loop-resistance (core and shield, of one cable) 0.35 Ω / 10 m
0.56 Ω / 10 m
Level at the output of an antenna socket
Level (dBµV)
minimum
recommended
maximum
Sat
44
58
79
FM
50
63
70
DVB-T
40
50
70
DVB-C
47
55
70
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Subject to changes and printing errors. Status 09/11
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