Purpose: The RCV class manages data-acquisition for a cyclic voltammetry curve.

There may be more than one data-acquisition object in a script, but only one may be running (i.e., acquiring values) at any time. The typical life-cycle of an Rcv object is:

Rcv = RCV.New(Tag, Pstat) ; Create the Rcv
Rcv.SetPlot(Plottype)  ; Determine the plot type
Rcv.Run()   ; Run the curve
Rcv.Printl()   ; Print the curve out to Output

When an Rcv object is run, the potentiostat must be in a Potentiostatic mode.