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Tech Head - The Technology Section
Gizmos and Gadgets
Handy Oscilloscope For Your PC
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<blockquote data-quote="Llew" data-source="post: 477670" data-attributes="member: 175007"><p>Been trying this little 'virtual oscilloscope' from _www.zelscope.com/</p><p></p><p>It takes the signal applied to the line in of your soundcard and gives you a nice display of any AC signal within the frequency range of the soundcard's input.</p><p></p><p>Of course as the input is blocked by a capacitor, you can't read DC voltages, but the voltage level of any AC waveform is shown. With restrictions of course - ONLY FOR READING LOW VOLTAGES! SEE THE WARNING ON THE ZELSCOPE SITE!</p><p></p><p></p><p>The upper frequency limit obviously depends on your soundcard (normally ~20 kHz) but I had no problem going higher - I found it handy for checking some outputs of my Echostar AD3000ip.</p><p></p><p>My 'normal' oscilloscope is not digital, so I don't have the facility to inspect a waveform - this is where this 'scope is very useful.</p><p></p><p>Some possibilities -</p><p></p><p>Inspecting the DiseqC pulses out to your LNB.</p><p></p><p>Reed pulses from your dish motor.</p><p></p><p>AF waveforms from the audio output of your STB, or indeed anything audio.</p><p></p><p>Following posts show some captured waveforms.</p></blockquote><p></p>
[QUOTE="Llew, post: 477670, member: 175007"] Been trying this little 'virtual oscilloscope' from _www.zelscope.com/ It takes the signal applied to the line in of your soundcard and gives you a nice display of any AC signal within the frequency range of the soundcard's input. Of course as the input is blocked by a capacitor, you can't read DC voltages, but the voltage level of any AC waveform is shown. With restrictions of course - ONLY FOR READING LOW VOLTAGES! SEE THE WARNING ON THE ZELSCOPE SITE! The upper frequency limit obviously depends on your soundcard (normally ~20 kHz) but I had no problem going higher - I found it handy for checking some outputs of my Echostar AD3000ip. My 'normal' oscilloscope is not digital, so I don't have the facility to inspect a waveform - this is where this 'scope is very useful. Some possibilities - Inspecting the DiseqC pulses out to your LNB. Reed pulses from your dish motor. AF waveforms from the audio output of your STB, or indeed anything audio. Following posts show some captured waveforms. [/QUOTE]
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Handy Oscilloscope For Your PC
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