Saw this terminology on the User Manual. What does it mean?
BTW, too bad reviews of the Mastech power supplies don't include how obtuse IMHO going from Constant Current to Constant Voltage the Mastech 1803 is.
However, its too price imho compensates for the fact that you'll need the User Manual.
Other power supplies have an LED, and/or switch, that shows/selects whether the power supply is in constant current or constant voltage.