Now that we have set up all the parameters, we can acquire some measurements. The combustion analyzer doesn't create any display, so we need to build our own.

We can see typical a CA setup in the picture below which shows:

•	Maximum pressure values for all cylinders

•	Pressure versus volume (pV) – white dots present start and end of combustion

•	Cylinder volumes and pressures (CA Scope) for the last cycle

•	MEP values (IMEPn, IMEPg, PMEP), frequency of rotation, captured cycle count...

•	Knocking factors

•	Heat release (TI, TQ, burn angles)

•	Time, as well as angle based data in the recorder

Measurement

When we use CA math, we have two more displays: p-v and CA scope. For more information how to use them, please consult the user's manual. If we use external clock, we can use the x-y recorder to show the time domain data. CA math creates one additional channel called Time, which can be used for x reference of the x-y.