This is a typo, the AOUT interface should be in MBSEQ_GC.V4 (and not MBSEQ_CV.V4) file. However, you don't edit this file directly, instead this file just stores the values that you changed in the CV configuration page. Gates are configured in MBSEQ_HW.V4 You've to ensure that the 3rd SR isn't assigned to any other function which could overlay the gate. Typical errors if the CV interface isn't working: no proper connection via J19, e.g. swapped signal lines too long cable between core and