Hi

I have analog drives with tacho connected with drives. Axis have linear encoder- heidenhain scales

Now to use any controller - csmio/ip-a or kflop; i will need some differential signal as a feedback

Heidenhain signals are 11uA signals. I know there are convertor available but i am not able to get those

Can anyone suggest some good economical convertor which can help me in this case?