Gamboa

Thanks a lot!!!; you are right, it is Ohms law in action, how could I forgot :headbang: ..hehehe. Now I can move on in a tranquil fashion but aware of the time that can be lost when experimenting due to incorrect suppositions.... :worship: . Rodrigo Gamboa

I am having problems controlling the voltage and current in a B+K precision programmable power supply. Since there is no driver available, I used the basic read an write example in Labview for serial communication, just making some modifications so that I could have two sequences, one for controlling the voltage and one for the current at the same time. The aparatus responds nice if just trying to control the voltage or the current, but it does not work in combination or it does not retain the voltage/current value when I send the current/voltage. Actually, it responds to both instructions nicely only when the current indicator has a nonzero value. And if it is switched from a nonzero to a zero value, It makes the actual voltage read to drop to zero. Command strings sent to the aparatus are well written in all cases (so I guess is an internal variable problem) and I already tried to flush out and clean the VISA, nothing works. I appreciate the help; I've attached the VI. Rodrigo Gamboa

Salutations people; first time in any kind d of forum and a beginner at Labview, pretty nice combination dont you think?. Actually, I just left the grounds of theoretical physics and decided for experimental plasma physics. I am going to start PhD studies at UC Davis so this summer I started with a random project (hardware manipulation) using Labview. And of course, I am already having questions..hahaha. I can sense this community is gonna be of great use. Anything regarding physics, I may be able to give you a hand. Rodrigo Gamboa.