Scales less than 0.2V/Div will be enabled in software when the opto-coupler is ready. For engineering batch, the quad can only use 0.2V/Div to 10V/div.
Thanks for pointing out, I have updated the bug list to avoid confusion. Thanks!
- Measurement voltage from 0.2~10V/Div. - Pending for a opt-coupler for smaller scale. [edited]