7i49 with 7i77 and 5i25

I'm giving my chnc one more try, then I'm gonna scrap it.  It has a 7i49 for the resolvers, I have tried before and found non linear feedback in halscope, then scoped out the resolvers with an oscilloscope and checked a bunch of stuff.... the resolvers and Mechanicals seem ok.  This machine has 6 Mesa cards and the setup is at least 10 years old.  I'll link the videos later if anyone's interested 

I have a spare 7i77 and a computer with a 5i25 I can test with.  I'm thinking I'll use them on here and try to get it functional.  The 6 Mesa card setup is kind of a mess.  

anyways there really doesn't seem to be a lot of info out there about using a 7i49 and firmware, etc... so I figured I'd ask.

For reference here are the videos I made while troubleshooting the issue originally. 




Also I think I will need svrm6s.bit if I am to do any more testing on the original setup
 

Yea, I realized this after I started looking into connecting them!

However, I have solved the problem! The resolvers on my hardinge are not 1:2 or 1:1. They are "syncro resolver control transformer" with 2:1 ratio. It says 2 pahse in 12v and 1 phase out 6v on the resolver. I was getting 1.6v back from the resolvers using the half voltage ouptut.

So I made a voltage divider circuit to cut the 1v reference signal from the 7i49 down to .5v, and now the resolver signals are right at 1 v and it's working great. I checked motion with a couple different .0001" indicators and it's on the money, no more nonlinear issues.