My Professor has asked me to make a program to measure the IV of a FET using 6221 (to source/sweep current) and 2182A (to measure voltage). We are using these instruments as the device is made of very delicate material and can support current under 100nA range which means that the voltage across device will be very very low (hence using 2182A Nanovoltmeter to measure the voltage) ..
After measurement I want to plot IV.
I can program the 6221 to sweep but I can not get the 2182A to measure voltage as the sweep progress. The problem is I can not get the triggering to work. (I am using GPIB card for connectivity between the equipments not RS-232 cable). Also I am not using delta, pulse delta or conductance mode. I need the 6221 to source and send out trigger and the 2182A to take measurement and send back a trigger which will change source level of 6221.
Does anyone know how I can accomplish this ... Source 6221 .. Measure 2182A .. Plot IV after measurement.
A more general question is which instrument buffer will save my result. I mean will the 2182A have my measurement only or will it have source level and measurement or will the 6221??
Any help will be appreciated ..
Thanks