by 1audio » Sun Oct 08, 2006 2:01 pm
I have been looking for a solution like this for a long time. I don't have the patience or time to program myself so I can't be happier to have found this. however a few comments are in order. The following are not software bugs but application issues:
1) first measurement settling, the first measurement usually seems to be way off, probably due to a settling time issue. This is a common issue with most automated measurements. (Even described by NIST). The fix is to make and discard the first measurement and repeat it.
2) Control of the balanced/single-ended connections. It should be at least under software control. I often am checking balanced amps, and concequently blowing the internal fuses if I overlook the selection. Also the best berformance is available when only one (input or output) is grounded.
3) Filter control. Measuring ultra low distortion requires the low pass filters (and sometimes the high pass filters). Having this on the control panel would help a lot. And limiting the frequecy range of the test is also important.
4) Setting the test limits for output and frequency. Its possible to fry many amps by driving them beyound their limits (I consider this bad design but explaining to someone that his amp needs $$$ work because it can't handle 100KHz at full power isn't fun).
Again, thanks for a very useful piece of software.