Sometimes data can be recorded in LabChart, and it appears to be upside down (inverted). This can happen if ECG wires, for example, are placed on the wrong limbs, or the tubes coming from the spirometer amp or pod, have been connected to the wrong ports.
It is easiest to correct this before the recording starts by changing the leads/tubes over or by checking the "Invert Data" box in the "Input Amplifier window".
However, if data is recorded has already been recorded in the wrong orientation, you can use an "Arithmetic" formula to essentially flip the data. The formula is below:
Ch"x"*-1
Where "X" is the channel the data is located.
For further technical assistance with this or any other issue, please contact ADInstruments Technical Support by clicking HERE