by adrian on Thu Sep 22, 2016 11:09 am
I have just tested this here and, i2 will export an RPM channel with 3 decimal places no problems. What version of i2 are you using?
One thing to note, the exported file will only have the actual sampled values, so for RPM the base resolution is 0.1Hz which is 6RPM. If you set the cursor to snap to sample point (done in the display tab of the properties window for the time/distance graph) you will see that the decimal places are always zero.
If you are exporting to csv and then using Excel to open it, Excel will ignore the zeros so it looks like you are only getting integers. If you use notepad or something similar to open the csv you will see that all of the decimal places are there and they will all be zero.