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Satellite TV receivers & systems support forums
Multi-receiver/TV systems - Domestic only
distrubution sky tv and digital /anolog
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<blockquote data-quote="spiney" data-source="post: 146716" data-attributes="member: 192438"><p>(late reply!), possible equipment damage, to clarify .....</p><p></p><p>sat receivers have dc volts on lnb socket, so it's always a "good idea" to de-power before connecting or disconnecting this.</p><p></p><p>Some early sat receivers could be damaged by shorting out the lnb socket, which is easily done! Most or all modern receivers should have short circuit protection, usually by current limiting, sometimes there's also a special fuse somewhere before the tuner.</p><p></p><p>As far as I know, all current Sky digiboxes have short circuit protection, certainly my Pace 2200 does, and that's old. But, try not to rely on this being true!</p><p></p><p>A multiswitch is built to withstand operational conditions, including putting unexpected dc volts onto the outlets or shorting them, though it wouldn't survive mains voltage!</p><p></p><p>(added) A mains powered multiswitch supplies the quattro lnb - and any internal circuitry - by itself, and would typically draw only maybe 40mA from each connected receiver, not enought to power even a single output lnb!</p><p></p><p>Receiver powered types derive current entirely from connected receivers (obviously!). If only 1 receiver connected, must be able to power the switch alone! Most sat receivers can supply up to 350mA from lnb socket, which should be enough, but it's wise to check!</p></blockquote><p></p>
[QUOTE="spiney, post: 146716, member: 192438"] (late reply!), possible equipment damage, to clarify ..... sat receivers have dc volts on lnb socket, so it's always a "good idea" to de-power before connecting or disconnecting this. Some early sat receivers could be damaged by shorting out the lnb socket, which is easily done! Most or all modern receivers should have short circuit protection, usually by current limiting, sometimes there's also a special fuse somewhere before the tuner. As far as I know, all current Sky digiboxes have short circuit protection, certainly my Pace 2200 does, and that's old. But, try not to rely on this being true! A multiswitch is built to withstand operational conditions, including putting unexpected dc volts onto the outlets or shorting them, though it wouldn't survive mains voltage! (added) A mains powered multiswitch supplies the quattro lnb - and any internal circuitry - by itself, and would typically draw only maybe 40mA from each connected receiver, not enought to power even a single output lnb! Receiver powered types derive current entirely from connected receivers (obviously!). If only 1 receiver connected, must be able to power the switch alone! Most sat receivers can supply up to 350mA from lnb socket, which should be enough, but it's wise to check! [/QUOTE]
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Multi-receiver/TV systems - Domestic only
distrubution sky tv and digital /anolog
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