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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Quattro lnb and diseqc motor.
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<blockquote data-quote="a33" data-source="post: 1070324" data-attributes="member: 332642"><p>Yes, that is right.</p><p>The terminator resistance choice is not critical, as long as it is DC-blocked.</p><p></p><p>Without a terminator, the motor will not be damaged. Without it an impedance mismatch occurs, which can cause problems in the 22kHz signal transfer and the RF signal transfer, which could cause rather unpredictable malfunctions in reception and motor control.</p><p>However, the motor circuit will also have 'some' terminating impedance (as opposed to totally 'open' or 'closed' termination at the end, these are the worst!), so it might be that that would be enough in practice/ in your case. But if you must order some satellite material, a terminating resistor isn't expensive, and the 'neat' solution.</p><p></p><p>The choice of a splitter is more critical: it must have no diodes! (As the diodes in splitters are usually in the wrong direction for this setup; they are meant for another purpose.) So it must be power pass, both ports, both directions.</p><p>A real splitter is much much better that a simple "T-piece"; also for impedance matching reasons.</p><p></p><p></p><p>BTW For a fixed two LNB solution: there are constructions available where you can put a 'side-mast' to your existing mast, which you can set at the needed dish skew angle. If you are watching 19e only with one receiver, only a 'single LNB' with one cable is needed, plus a diseqc switch.</p><p>A motor, however, will give you even more choice of satellites.</p><p>Just to give you the options.....</p><p></p><p>Greetz,</p><p>A33</p></blockquote><p></p>
[QUOTE="a33, post: 1070324, member: 332642"] Yes, that is right. The terminator resistance choice is not critical, as long as it is DC-blocked. Without a terminator, the motor will not be damaged. Without it an impedance mismatch occurs, which can cause problems in the 22kHz signal transfer and the RF signal transfer, which could cause rather unpredictable malfunctions in reception and motor control. However, the motor circuit will also have 'some' terminating impedance (as opposed to totally 'open' or 'closed' termination at the end, these are the worst!), so it might be that that would be enough in practice/ in your case. But if you must order some satellite material, a terminating resistor isn't expensive, and the 'neat' solution. The choice of a splitter is more critical: it must have no diodes! (As the diodes in splitters are usually in the wrong direction for this setup; they are meant for another purpose.) So it must be power pass, both ports, both directions. A real splitter is much much better that a simple "T-piece"; also for impedance matching reasons. BTW For a fixed two LNB solution: there are constructions available where you can put a 'side-mast' to your existing mast, which you can set at the needed dish skew angle. If you are watching 19e only with one receiver, only a 'single LNB' with one cable is needed, plus a diseqc switch. A motor, however, will give you even more choice of satellites. Just to give you the options..... Greetz, A33 [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Quattro lnb and diseqc motor.
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