One of the biggest problems with low cost USB oscilloscope it's the software. If you already touched a proffesional scope and use it, then probably all those low cost tools will look to you very difficult to use and many of them useless. I've payed around $500 for a two channel USB scope + programable waveform generator and I can't use it properly because I know how must look a real tool and become angry everytime I touch it. Read carefully the specifications. 100MS/s could mean a 10MHz analogic bandwith or 50MHz analogic bandwith as well. Take a look at software and ask for a running sample BEFORE buying the tool. The software screen must look like a real scope and must have all the feature a real tool has. You can't use a scope which hasn't the amplitude and time grid and need to move the cursor on the screen to find the time and aplitude of the signal... best luck, On 7/9/08, andrew kelley wrote: > Would it be worthwhile to setup an oscilloscope/logic analyzer like this: > > 100 MS/s A2D, two 8 bit or one 16 bit > interfaced to a ATA/100 Drive (and ancillary logic driving the > signals, for the PIC cant do that) > with a PIC reading logged data off to the PC via USB > > or would I be better off to save my pennies and buy a real scope? I > suspect that maybe the case. > I was looking... $250USD for a 100msps probe-like oscope with a usb > cable coming out of it.(+- 50v input) > > Andrew > -- > 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