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Satellite Systems - What to Buy - What to install
disecq motor
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<blockquote data-quote="Trust" data-source="post: 1112098" data-attributes="member: 181524"><p>The SM3D22 was provided with a 3rd F connector and a build-in 1.0 diseqc switch , the SM3D12 was the standard version .</p><p>At a sat meeting in 2004 I did a demonstration with a laserpointer at the rotor showing the arc on a wall .</p><p>Started at zero and marked the spot on the wall , worked to 42º E , marking sevaral positions between .</p><p>Returned to zero and made markings till 30º W with also marking sevaral positions between .</p><p>When turned back from 30º W to 22º W the spot did't hit the 22º marking but stopped 11 mm to early .</p><p>This mismatch happened every time with the opposit approch as a used for the marking .</p><p>11 mm at a distance of 2 mtr is ± 0.3º , no big deal at a strong signal satellite but at a weaker satallite it make some difference .</p><p>Later I noticed that this rotor has a arc from 50ºW to 50ºW with a pulser that provide 277 pulses over that range , so one step is 0.36º</p><p>I do not know if the counting and arc range at both rotors are the same .</p></blockquote><p></p>
[QUOTE="Trust, post: 1112098, member: 181524"] The SM3D22 was provided with a 3rd F connector and a build-in 1.0 diseqc switch , the SM3D12 was the standard version . At a sat meeting in 2004 I did a demonstration with a laserpointer at the rotor showing the arc on a wall . Started at zero and marked the spot on the wall , worked to 42º E , marking sevaral positions between . Returned to zero and made markings till 30º W with also marking sevaral positions between . When turned back from 30º W to 22º W the spot did't hit the 22º marking but stopped 11 mm to early . This mismatch happened every time with the opposit approch as a used for the marking . 11 mm at a distance of 2 mtr is ± 0.3º , no big deal at a strong signal satellite but at a weaker satallite it make some difference . Later I noticed that this rotor has a arc from 50ºW to 50ºW with a pulser that provide 277 pulses over that range , so one step is 0.36º I do not know if the counting and arc range at both rotors are the same . [/QUOTE]
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Satellite Systems - What to Buy - What to install
disecq motor
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