TechniSat TechniRouter 5/1x8 K Benutzerhandbuch
Seite 47
47
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
20 m Multimedia cable
-5..-8.4 dB
1)
trunk
0.3
Ω
2)
0.06 V
(at I=0.2 A)
Trunk of a 5/X K
with 5 m Multimedia cable
-4 ... -7 dB
0.2
Ω
2)
0.04 V
(at I=0.2 A)
Tap TechniRouter 5/X,
30 m 115 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 5/2A
trunk
junction
-1…-1.5 dB
+1…+5 dB
--
Passive distributor 5P
-3.8 dB
--
Intermediate amplifier 5Z/NT
or 5Z2/NT
+7…+12 dB
--
1)
Value at the lower ... upper band limit
2)
At the root, the resistance, due to DC permeable parallel switching of 4 individual coaxial cables, is smaller
then that of one individual cable.
3)
73 dBµV from the LNB and 20 m conduction provided for.
Loss (dB / x Meter) applicable cable types
Type
115 dB cable or
120dB premium-cable
Mini-CoaxSat 2150- or
Multymedia-cable 4
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 any antenna socket accordance with EN 60728-1
Level (dBµV)
minimum
recommended
maximum
Sat DVB--S
47
58
77
FM, stereo
50
63
70
Analog TV
60
63
70
DVB-T 32
50
74
DVB-C 47
60
74