Step-2: Code it up in LabVIEW
LabVIEW is a National Instruments product that is designed for machine control and monitoring. The source "code" is graphic and resembles a block diagram. It's multi-threaded and multi-tasking, and it can be compiled into an executable. I love it!
Before stumbling across the idea of using a second-order polynomial to define the transfer curve of the Bird 43 RF section, I had intended to create a lookup table. But look how elegant the solution is in LabVIEW. I just entered the formula into a math box and let the computer worry about sorting it all out. Most of the icons to the left of the math box deal with the data acquisition I/O board.
The source code drives the two bar graphs and digital read out GUI's as you see.
There will be much more to the final controller application. This is just a test version to debug the wattmeter...