LCR Driver Range Not Working

[amp-bjorn]

The range function in the LCR driver is not working. The issue is that we attempt to perform a fancy string to number to string coversion. The LCR will only take the following in its SCPI commands (tested manually)

📖 SCPI Command Reference

The driver wraps these low-level serial commands into high-level Python methods.

Command	Parameter Options	Description	Example Usage	Example Return (Blank means no return value)
*IDN?	-	Identity check	*IDN?	Agilent Technologies,U1732C,...
SYST:ERR?	-	Error queue check	SYST:ERR?	+0, "No error"
MODE	SER, PAL	Series vs Parallel	MODE SER	-
DISP2	D, Q, TH	Set secondary parameter	DISP2 Q	-
FREQ	100, 120, 1k, 10k	Test frequency (Hz)	FREQ 1k	-
FUNC	R, C, L, Z, ESR, AI	Primary measurement type	FUNC C	-
RANG	See Range Table below	Set manual range	RANG 20u	-
FETC?	-	Read primary value	FETC?	+6.856E-07
FETC? ALL	-	Read all parameters	FETC? ALL	Rs,+3.809052E-13,Ls,+4.316664E+09,Rp,+6.172276E-14,Lp,+4.316802E+09,Z,+4.316733E+09,TH,+5.774222E-01,F,+1.000000E+03,D,+1.774207E+02,Q,+5.636322E-03

📉 Range Options by Function

Function	Available Range Arguments
R / Z	2, 20, 200, 2k, 20k, 200k, 2M, 20M, 200M
L	2000u, 20m, 200m, 2, 20, 200, 2k
C	2000p, 20n, 200n, 2000n, 20u, 200u, 20m

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