recording cv (-5/+5v and 0-4.5v)

[ozmmo]

You definitely need to add a offset if you use the killpatrick one.
As for the Rene, it can read the 0 - 4,5 Volt and should regulary record them. But it might be needed that you got to manually calibrate the inputs to match with the Rene.

so should I go through calibrating cv inputs of nerdseq described in page 55 on manual?
I have never calibrated any module in my experience so I'm a little worried.
since it's autocalibrate function, nothing would go wrong?