DiSEqC switch - C and Ku Band


5 Aug 2011
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DiSEqC (Digital Satellite Equipment Control), pronounced "Die-Sec", is a special communication protocol for use between a satellite receiver and a device such as a multi-dish switch or a small[1] dish antenna rotor. DiSEqC was developed by European satellite provider Eutelsat, which now acts as the standards agency for the protocol.


DiSEqC relies only upon a coaxial cable to transmit both bidirectional data/signals and power. DiSEqC is commonly used to control switches and motors, and is more flexible than 13/18 volt and 22 kHz tone or ToneBurst/MiniDiSEqC techniques. DiSEqC is also compatible with the actuators used to rotate large C band dishes if used with a DiSEqC positioner. Despite its name, it has been used on fully analogue or only partially digital-capable (Astra Digital Radio) satellite receivers.

A number of variations of DiSEqC exist:
-> DiSEqC 1.0, which allows switching between up to 4 satellite sources
-> DiSEqC 1.1, which allows switching between up to 16 sources
-> DiSEqC 1.2, which allows switching between up to 16 sources, and control of a single axis satellite motor
-> DiSEqC 2.0, which adds bi-directional communications to DiSEqC 1.0
-> DiSEqC 2.1, which adds bi-directional communications to DiSEqC 1.1
-> DiSEqC 2.2, which adds bi-directional communications to DiSEqC 1.2

All four variations were standardized by February 1998, prior to general use of digital satellite television. The later versions are backwards compatible with the lower revisions, but the lower revisions are, as might be expected, not forwards compatible with the higher revision numbers. 1.x and 2.x versions are both backwards and forwards compatible. This table shows what works and what does not:

Do note that a 1.x receiver will not be able to receive communication from a switch or motor. Usually this is not important, as the switch or motor can be controlled by the receiver without problems.
Eutelsat apparently developed the system to allow satellite users in Continental Europe to switch between the more popular SES Astra satellites at 19.2° east and Eutelsat's own Hot Bird system at 13° east. As a result, the vast majority of European satellite receivers support DiSEqC 1.0 or higher, with the exception of all set top boxes manufactured under the Sky Digibox name. All supporting receivers have received certification to carry a logo specifying which variation of DiSEqC they support.
Also often found are the terms DiSEqC 1.3 and 2.3 used by manufacturers and retailers to refer to the use of DiSEqC with other protocols. For example, 1.3 usually refers to a receiver which uses USALS in conjunction with the DiSEqC 1.2 protocol. Such terminology has not been authorised by Eutelsat.
DiSEqC uses a pulsed (tone-burst) 22 kHz sine-wave at 0.5v peak to peak.

Source : Wikipedia
RE: DiSEqC switch - C Band

nice work bro.
RE: DiSEqC switch - C Band

hello .the title is wrong . It is not only used in c band . It is also used in ku band. Edit the title . Thanks for explanation
Good information. Also currently 8x1 Dieseq also available in the market for connecting 8-satellite connections to one receiver provided receiver has the capability for that.

In genaral. Diseqc switchs are in two types . 1 commited switch .2 uncommited switch .

4*1 diseqc are commited .

8*1 diseqc are uncommited.

These switchs work on sending correct cammands by reciver
Good information. Also currently 8x1 Dieseq also available in the market for connecting 8-satellite connections to one receiver provided receiver has the capability for that.
in order to work this kind of switch . A reciver should be capable of sending diseqc 1.1 protocal cammands
Vishvish - What you mean by committed switch and uncommitted switch ? Pls explain ?
commited and uncommited switches are distiugushed by what cammand protocal used .
commited swith were used most in early days when eutalsat first intruduced.but for further . this provided the option of 4 satellites and further used a 22 khz swtich to get 8 satellites .by cascading commited with 22 khz switch .this is the limitation to 8 satellites

where as uncommited were devloped becouse users were demandig more satellites to be connected to one reciver .it has the capablity of 64 satellites to one reciver .

in commited switch the cammands are E0 10 38 F0

where as uncommited cammands are E0 10 39 F0

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