DS0201 nano ver4.28 software - frequency measurement

Hi I have a nice little sainstudio ds0201 nano that shows version 4.28 software on the boot screen. I have figured out calibration and am still awaiting an sd card I have on order but can not figure out how to measure frequency/duty cycle.

Should the unit show a freq/duty measurement for the inbuilt squarewave test frequency? Mine just shows ‘–’ for both?

Have tried contacting sainstudio and got an initial reply but no answers, have figured out calibration myself but not these two measurements.

Any suggestions? Ive only come off a cro so not even sure if its possible to measure freq/duty of as square wave on these types of units?


Anyone care to share their thoughts?