How can I measure C(V) of a MOSCAP with HP4140B pico-ampmeter ?

[Dicken]

I am trying to develop a program in labview to measure the high and low frequency on Metal oxide structure for C(V) measurement.

I am trying to use the HP4140B pico-ampmeter and Keithley 199 DMM scanner with PAR410 C-V plotter.

 I would like to know how i can program labview to communicate with HP4140B and Keithley 199DMM and read the C(V) measurements. Please assist and guide me for the same.

[Dennis_Knutson]

There are unsupported drivers for these ancient instruments - 4140B and 199. Go to the Instrument Driver Network for information on what a driver is and how to use one. You will need a GPIB controller from NI.

[Dicken]

Thank you Dennis Knutson. I have found the required drivers and created a prototype of the C(V) measurement program. But right now the problem I face is that even though it inputs the parameters correctly.. it doesnt read the output right. I get a straight line for the C(V) output graph. attached you can find my program for Quasi-static C(V) measurement.