Hi,
About sound card as Digital Oscilloscope.
If your sound card is embedded in the motherboard then put
a second sound Card in the PCI bus and use it as Oscilloscope.
(It is very easy to burn your sound card when trying to
investigate some signal with unknown amplitude and DC offset).
Need more than 20 Hz to 20 kHz bandwidth?
Virtins Sound Card Oscilloscope
Bandwidth: 20 Hz - 96 kHz (depending on Sound Card)
US$24.95, 7 day evaluation time.
http://www.virtins.com/page2.html#Oscilloscope
* * *
SEE "Sound card input protection circuit":
(Scroll down the web page).
http://www.virtins.com/
* * *
Sound Card Interface For PC Test Instruments:
(Full schematic and description + PDF files,
the web server is sometimes busy).
http://www.siliconchip.com.au/cms/A_30518/article.html
* * *
Example of Sound Card 96 kHz:
(Ask Virtins Technology if OK with the SW).
CREATIVE SOUND BLASTER LIVE 24-BIT
Sound card - 24-bit - 96 kHz - 7.1 - PCI
Where you can buy it:
http://www.cdw.com
CDW# 713157 US$30.43
Please add your location in your forum profile.
(Example "USA" or "IL, USA" or "Vernon Hills, IL, USA").
If you do that I know which URLs are appropriate when I
send you a link where to buy HW/SW.
Best regards,
Luciano
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