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Step by Step How to Use a Digital Multimeter / Oscilloscope for Azimuth Adjustments

So I did the usual azimuth setup for a VPI using the rod on top of the tonearm groove (method of setting that is included with VPI turntables from factory) on my VPI Classic 3.   I also bought one of those clear blocks on Amazon with the lines so you can get it as flat as you can visually.   It does sound good just doing this but I wanted to go next level and see if I could do it electronically even better.    I have read you can use a digital multimeter (DMM) or oscilloscope to do the adjustments.   I found on Amazon a Hantek 2D42 that has both features and I bought the BNC to RCA connectors for it so I can interface it with my turntable or alternatively the preamp output on my Sutherland 20/20 for boosted signals.
That all being said, how do I use this for setting the azimuth?   I have read you can use either device (DMM or Scope) to do this adjustment but it seems like the directions are pretty sketchy on how to do it.
I looked into buying the Adjust + software but as of August 2021 it isn't available to buy any longer so that isnt an option.
Anyone know how I can use this Hantek to do the testing and adjustments?
Thanks in advance,
Jason
newguru

Showing 1 response by terry9

terry9
2,243 posts
 
@lewm  is dead right.

According to Peter Lederman, matching electronically usually means equalizing channel separation, which is a bad idea which can lead to a poor adjustment. So if you have a high end cartridge, with natural channel separation of say 37dB in one channel and 43dB in the other, you have to cant the stylus at a ridiculous angle to equalize.

Ask me how I know. My higher end Koetsu must have been at 10 degrees to equalize channel separation. Sounded terrible. Set optically and then by ear, and the cartridge sounds sublime. And it scarcely wears at all.

Assuming I've interpreted Lederman correctly and my observations are not too subjective. Anyway, YMMV.
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