Hello,
I just calibrated the current measurement of my J-Link Ultra+ while having nothing connected
So far so good.
Then same with just a 5V to 3.3V LDO connected, so that its quiescent current will not be part of the measurement.
Numbers are a bit high?, but ok ... after that the current in Ozone was always 0mA (in reality it should be around 1..13mA).
With a bit more load, so I get 20..33mA,I can see the measurements again but as 4..17mA
so I calibrated again with nothing connected:
no noticeable change. So again:
but that does not change anything and further attempts give the same output.
So I still have an offset of something like -14mA that does not go away and Ozone/J-Link won't display negative numbers so I won't get any useable output at all.
What to do?
I just calibrated the current measurement of my J-Link Ultra+ while having nothing connected
Then same with just a 5V to 3.3V LDO connected, so that its quiescent current will not be part of the measurement.
With a bit more load, so I get 20..33mA,I can see the measurements again but as 4..17mA
so I calibrated again with nothing connected:
So I still have an offset of something like -14mA that does not go away and Ozone/J-Link won't display negative numbers so I won't get any useable output at all.
What to do?