GigaSwitch 9/8
Installation
instructions
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Basic unit
(for a maximum of 8 parties)
Art. No. 0000/3245
Cascade matrix
(for a maximum of 8 parties)
Art. No. 0000/3246
Mains power adapter
Art. No. 0000/3222
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2 Safety notes
For your own protection, you should read the safety notes carefully before installing the
equipment. The manufacturer accepts no liability for damage caused by inappropriate hand-
ling, or by ignoring the safety instructions.
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Components should be mounted in a dry room, on a horizontal plane, consisting or
flame-resistant materials.
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When installing the equipment keep the electricity switched off.
Ensure the antenna installation is earthed.
Ensure the antenna installation is protected from lightning as per local regulations.
Ensure that you are in compliance with relevant European standards and VDE regu-
lations, where applicable, with regard to electrical safety.
You must comply with national regulations pertaining to broadcast reception installati-
ons.
Never open the housing of the equipment. Any repairs necessary should only be car-
ried out by a qualified specialist. If the following apply, disconnect the equipment from
the mains power supply, and call a qualified repair person:
the unit was subject to humidity, or water has run into the unit,
in case of malfunctions,
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in case of severe external damage.
3 Installation
3.1 General
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We recommend a star-shaped distribution, with the distributor being located either in
the attic or near the centre of the building. If you are using a cascade matrix, please
note Point 3.5.
Please ensure that the levels of the satellite signals fed into the system are approxi-
mately equal. This ensures that the very good decoupling characteristics are not limi-
ted.
As cables are very sensitive to damage, you should install these as late as possible
duriung the building process. If possible, lay the cables inside a protective tube or
pipe. Do not bend cables too sharply!
Install the equipment while the electricity is switched off, or disconnected.
3.2 Selecting the external unit/LNCs
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You may use Quatro or Dual-Output LNCs. Please note the maximum possible
current strength for inputs, as per the technical data.
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Quatro-Switch LNCs, Twin LNCs and Single Universal V/H LNCs are not suitable.
The current feeding the LNCs ia approx. 18V (load-dependant).
3.3 Cable
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Because of the amplification provieded by the units, you can use small-calibre, easy-
to-use cables in spite of the higher damping this means.
When connecting the LNCs with the multi-switch, resp. several multi-switches with
each other, we recommend the use of MULTYMEDIA cable (Art. No. 0001/3014).
we recommend you use mini coaxial cable to connect the multi-switch with the anten-
na sockets.
To isntall longer sections of cable to connect to the antenna sockets, please use the
low-damping co-axial cable CoaxSat 2150.
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Damping values are specified in Point 6.
Please use crimp-type connectors wherever possible!
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Insulation should be stripped from the cable as follows:
approx. 4mm
7mm
crimp connector
20mm
free wire
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10
wire mesh
screw-on
silver foil
F connector
3.4 Antenna sockets
The participants should be connected to the system via antenna sockets (SV 500 or SVT
500). This ensures that terrestrial programmes can be received without the need for an
additional socket, and equipment connected in this way is protected from extraneous interfe-
rence.
3.5 Cascade
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We recommend splitting the cascade distribution (star-shaped for each floor in the
building, MULTYMEDIA cable between the multi-switches). This makes the laying of
cables more efficient, with less possible confusion.
If you wish to distribute to 16 parties from a single central point (star-shaped distribu-
tion), connect the switches by means of quick-connecting F-connection adapters.
3.6 Energy-saving switch (use only when operating 9/8 G on its own!)
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The terrestrial reception is supplied continuously via the mains adapter.
If the energy-saving switch is set to “on”, the LNCs will only be fed if at least one
receiver is switched on.
4 Installation hints
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Check all cables for short circuits before making the connections, in the case of lar-
ger installations this can save a lot of time later.
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Ensure that the connections from the LNC are not mixed up. To make things easier,
we recommend you use the (multi-coloured) MULTYMEDIA cable, or mark the
various cables with suitable multi-coloured marks.
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Use single, uncut lengths of cable throughout. DVB signals are particularly suscep-
tible to interference through the use of F-connectors.
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Screw the F-connectors moderately tight.
Any outputs not used can, if you wish to achieve a particularly linear frequency dis-
tribution, be capped with a 75 Ohm terminal resistor.
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Any inputs not used may not be capped with a terminal resistor.
The multi-switches can also be mounted in small distribution cabinets using hatclip
fasteners.
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Distribution of terrestrial programmes:
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Ensure that the terrestrial signals fed into the system are of approximately equal
strength.
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A terrestrial pre-amplifer is not required.
5 Troubleshooting guide
Problem
Possible causes
Solution
No reception on any pola- Antenna position not cor-
Check the position of your
antenna. Use the signal
strength indicator of your
receiver (transponder info)
risation plane.
rect
Still no reception on any
polarisation plane
Short circuit in LNC
connection
Disconnect the branch
connections on after the
other to locate the short
circuit
No reception, or wrong
programmes, on individual ched, or central wire in
polarisation planes
LNC connections swit-
Check on the allocation of
cables and connectorsr.
E.g. use a receiver to
connection too short
check on the signal direct-
ly in the LNC connection.
Outputs of individual par-
ties not functional
LNC voltage and/or swit-
ching criteria of receiver
incorrect
Try connecting the recei-
ving unit to a different
party output.
Check the LNC power and
the switching criteria with a
measuring device, or try
another receiving unit
No reception via receivers aLNCsnot feeding in
cascade unit.
Set switch on 9/8 G to
“Off” for energy saving
Waves in terrestrial TV
image
Input signal too strong
Reduce level
(see Technical Data)
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6 Technical Data
9/8 G
Cascade 9/8 G + K
Terrestrial
Satellite band: 950 - 2150 MHz
47 - 862 MHz,
Terr.
Sat.
Terr.
Sat.
Throughput damping
Branch gain on 9/8K
Branch gain on 9/8G
Decoupling receiver outputs
Input levels
2 ... 3dB
2 ... 5dB
1 ... 4dB
-2 ... +3dB
-5 ... -4dB 3) -4 ... -2dB 3)
-3 ... -1dB -2 ... +3dB
> 35dB
recommended
72dBµV
70dBµV
70dBµV
75dBµV
80dBµV 1) 85dBµV 2) 80dBµV 1)
90dBµV 2)
maximum
Shielding
in acc. with EN50083-2/A1 (TechniSelect S)
DiSEqC 1.0 or higher with U >0,25V
ss
or Mini-DiSEqC or 11,5V...14V/16V...19V
und 0/22kHz ±4kHz
Control
Mains adapter supplied, 16V~, at full load 0,7A, stand-
by <25mA
Mains adapter
Power, requirements of mains
adapter
65mA
190mA
635mA
(protected against short circuit
and overload)
510mA
(protected against short circuit and
overload)
max. possible to the
LNCs
required by receiver
Ambient temperature
Dimensions: WxHxD
60mA
-25...+55°C
210x125x35 (mm)
1) Relative to broad-band cable signal in BBC grid (36 TV signals, 24 FM
programmes), CTB (72dB) / CSO (69dB), in case of terrestrial reception
individual stations are often larger, but this is acceptable as long as they
remain smaller than 90dBµV
2) in accordance with EN 50083-3: IMA3 35dB
3) In case of split cascading please also consider cable attenuation!
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Your equipment is in accordance with CE, and complies with all relevant EU standards!
Subject to change, not responsible for printing errors. Correct as at 02/04
TechniSat and GigaSwitch are registered trademarks of
TechniSat Digital GmbH
P.O.Box 560
D- 54541 Daun, Germany
190204
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