Can I use the AUX Inputs on the WT1800 in the Math Functions?

Yes, the AUX inputs on the WT1800 can be used in the Math functions.

 

For example, if you wanted to measure a DC bus input using the AUX inputs (input elements not connected), you would scale one of the AUX inputs to the desired voltage and the other for current.  Then in the Math function, input the Math expression AUX1() x AUX2().  Even though there are no input elements for the AUX inputs, the () are still required when putting in the formula.