Since some funds were allocated to our lab, I'm planning to order an equipment that allows to obtain "ON-READ-OFF-READ" characteristic for memristive thin film structures, somewhat similar to the picture in attachment.

I consider AGILENT TECHNOLOGIES 33511B arbitrary waveform generator:

http://www.amazon.com/AGILENT-TECHNOLOGIES-33511B-GENERATOR-WAVEFORM/dp/B00DDF0PV8

Does anyone have experience in such measurements? Is this type of generator suits for that and is it enough? Or maybe some other equipment?

And what you think about Chinese equivalents of such generators (branded as Rigol, Siglent etc.) 

My budget is limited to only $1600.

I would appreciate any suggestions. Thanks. 

UPDATE:

I was given advice to order so called VirtualBench from National Instruments.

http://www.ni.com/virtualbench/buy/

It is 4 in one device and kind of a parody of parameter analyzers, but requires some IT skilss.

However I'm skeptical towards that? Isn't just Arbitrary generator just better?  

Can you say something about this?