Hi David, I agree with you, but if you know the limitations of the PC based scope and your resources (money wise) are limited then they are a very capable solution. We use a few and they are great, I constantly have the need to scope signals at HV and I use a PC based scope with an USB to fibre to USB cable to control the scope and get the data out which provides complete isolation. This improved the way we can fault find immensely. Best regards Luis -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of David VanHorn Sent: 02 April 2006 01:59 To: Microcontroller discussion list - Public. Subject: Re: [OT] Oscilloscopes... I use a tek TDS420, 4 channel 100 mhz DSO and an ANT-8 8 channel logic analyzer. Both have their strengths. It's always bound by your resources though. Buy as much scope as you can afford, because not being able to see a problem leaves you very much in the dark. I have a LOT of test equipment, some is dedicated to a specific task, others are more generic. I wouldn't trust a USB or PC based scope solution, only because I haven't seen one that can hold a candle to a real scope. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist