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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Satellite Meters and Installation Equipment
Using the "138MHz-4.4GHz USB SMA Source/Signal Generator/Simple Spectrum Analyzer" for TV/CATV/SAT
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<blockquote data-quote="vma" data-source="post: 1002945" data-attributes="member: 256592"><p>That will not work. The LNB requires power, voltage (14/18V) and comuting signals like 0/22kHz and/or DiSEqC commands!</p><p></p><p>The SMA device cannot provide the current, voltage and comuting signals.</p><p></p><p>You will have to connect the SMA device to the LOOP THROUGH port of a satellite receiver or use a switch with 1-IN and 2-OUT (or more OUT ports). One connects to the receiver, the other connects to the SMA.</p><p></p><p>You will in all cases need the DC BLOCKER, unless you use a special switch, like the one discussed in the beginning of this thread, which uses diodes to protect each output from the current/voltage/signals inserted on the other output connectors.</p><p></p><p>Again, all of this is discussed in the manual of my software.</p><p></p><p>Regards,</p><p>Vitor</p></blockquote><p></p>
[QUOTE="vma, post: 1002945, member: 256592"] That will not work. The LNB requires power, voltage (14/18V) and comuting signals like 0/22kHz and/or DiSEqC commands! The SMA device cannot provide the current, voltage and comuting signals. You will have to connect the SMA device to the LOOP THROUGH port of a satellite receiver or use a switch with 1-IN and 2-OUT (or more OUT ports). One connects to the receiver, the other connects to the SMA. You will in all cases need the DC BLOCKER, unless you use a special switch, like the one discussed in the beginning of this thread, which uses diodes to protect each output from the current/voltage/signals inserted on the other output connectors. Again, all of this is discussed in the manual of my software. Regards, Vitor [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Satellite Meters and Installation Equipment
Using the "138MHz-4.4GHz USB SMA Source/Signal Generator/Simple Spectrum Analyzer" for TV/CATV/SAT
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