Satellite TV fans and professionals, we post in the topic our installations of antennas with different multiswitches. / Also from neighboring forums all the best /. We learn and then move on to practical exercises. A photo or drawing is required.
A little theory. / These are not my statements /.
To provide a large house with satellite and terrestrial signals, a multiswitch is used.
A multiswitch acts as a kind of “equalizer” and “distributor” for satellite and terrestrial signals.
The first and simplest option is obvious, one client = one antenna/satellite =. This is a multifeed for 4 satellites via DISEGS.
And if there are 36 apartments in the house, and each apartment wants to install satellite television, then there will be 36 antennas on the roof of the house that transmit data. This means that the roof will be completely covered with transmitting devices. In some places this is inconvenient, and in some it is completely prohibited. And so the Multiswitch was invented.
Multiswitch acts as a universal switch. It ensures interaction between receivers with different outputs to the converter, or with different converters.
The main task is to create all the necessary conditions for the receiver to work. If it falls on a 13-volt flow, the multiswitch will simply transfer it to a special port for this power, for another flow - another port.
Useful qualities of the device:
1. With its help, you can refuse one polarity or one flow. Each connected subscriber will have all the parameters necessary for operation. The receiver will be connected to the desired input, and accordingly, to a suitable converter. This applies to both input and output.
2. The TV switch also additionally receives the terrestrial part of the signal, with a range of 5-862 MHz. The entire flow goes to the subscriber through one cable, no excess of cords! Now you just need to install a diplexer on the consumer side - this will allow you to get two independent ports for satellite and TV.
3. Frees up the roofs and facades of residential buildings, ensuring signal reception for all residents.
Cascadable or terminal .
Cascadable is widely used in apartment buildings, corporate offices and residential buildings with a large number of people.
A device of this type does not require power and is added in a chain at the place of signal distribution (usually, each floor in the building). It is important that the devices are connected to each other. If it is necessary to connect a signal amplifier, a power injector is connected, which requires an outlet with alternating current and a power of 220 volts.
The terminal type of multiswitch is recommended to be installed in private houses or in small rooms. This is due to the close distance to the antenna. The device is included in the switchboard, because it is where the cables from the antenna enter and from which the cables go to the receiver. The terminal multiswitch requires electricity. That is, within a meter there must be an outlet with an alternating current of 220 volts.
Connection and setup
The multiswitch is equipped with connectors for the input (needed for converters) and output (for receivers). The number of connectors for the output is equal to the number of connected receivers. The number of receivers corresponds to the number of connected clients.
Understanding the essence of the output connectors is a little more difficult. A signal with a Ku-band is fed into it, which is divided into polarization types along with two sub-bands.
This means that in order to receive the full spectrum of the flow from one transmitting device (in our case, a satellite), you will have to use 4 switch inputs, connecting to four converter outputs (in some cases, different converters).
The signal from the C level range is not divided into sub-bands and is fed as a whole.
Setting parameters:
1. If the multiswitch has from 1 to 4 input connectors for connecting to the converter, the DiSEqC value must be off, or Disabled.
2. If >4 inputs, then DiSEqC is set to position ½ or 2/2, etc.
3. To switch the 22kHz parameter in the DiSEqC settings for the receiver, this option must be available.
Input hole marking types:
1. A – LOW BAND (lower sub-range) – 13 v/oHz.
2. B – LOW BAND (lower sub-range) – 18 v/22 kHz.
3. C – HIGT BAND (upper sub-range) — 13 v/oHz.
4. D – LOW BAND (upper sub-range) – 18 v/22 kHz.
A regular over-the-air antenna or an external video camera signal should be connected to the connector with the “Terr” engraving.
Advice! It is recommended to use the frequency of 11700 MHz as the boundary of the lower and upper ranges. This indicator is a kind of divider.
I read on my old forum and from my neighbors, there is nothing complicated with connecting LNB. The main thing is to know where to connect the upper and lower sub-ranges - /Vertical and horizontal polarization/. And buy high-quality equipment.
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