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4krow
Guest
Thanks so much for the informative reply.
mcandmar
New member
Arta looks interesting, not heard of that one before.
I have dabbled with RMAA using a pc soundcard and had very good results with it measuring frequency response and distortion. The software is free so all you need to do is to make up a few cables and source some dummy load resistors. Only caveat to keep in mind is most soundcards wont take more than 4volts before you frazzle them. So for testing higher voltages like speaker outputs you need something else, the solution i used was one of Pete Millets sound card interfaces between the amp and soundcard. http://www.pmillett.com/ATEST.htm The whole setup works very well for me, and has proved very useful.
I have dabbled with RMAA using a pc soundcard and had very good results with it measuring frequency response and distortion. The software is free so all you need to do is to make up a few cables and source some dummy load resistors. Only caveat to keep in mind is most soundcards wont take more than 4volts before you frazzle them. So for testing higher voltages like speaker outputs you need something else, the solution i used was one of Pete Millets sound card interfaces between the amp and soundcard. http://www.pmillett.com/ATEST.htm The whole setup works very well for me, and has proved very useful.
Pro audio external cards have trim pots at the inputs, so you can throw considerably more voltage into them.mcandmar said:
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4krow
Guest
Well, here is the update. First , I bought a Kiethley benchtop meter that performs all the reasonable functions, plus has a signal generator. Of course, as mentioned above the inboard signal generator will only produce one frequency at a time. Regardless, I purchased a 2215A Tektronics 60 mghz two channel scope. Seems to me that a white noise signal could be applied to a circuit that is to be measured,and then run into the O'scope. Of course, the 2015 Kiethley doesn't have that function. There well may be other test equipment that I will be purchasing to complete this setup. So with the decisions that I made, what might be my options at this point?
