Hello,
how is it illustrated that you can only change the +/-10V range in MAX? Do you get an error message by changing the values?
Normally, when you create a virtual channel in MAX you can change the unit and the range in the channel assistant. After the channel is created you can still change unit and range in the properties of the channel. The scope you choose does adjust automatically to the nearest range which is available for this DAQ-Card.
Regards
Thomas D.
NI Germany
(SRQ 210415)