LabVIEW

cancel
Showing results for 
Search instead for 
Did you mean: 

Need help to build a system to mesaure offset voltage

I am new to LabVIEW, and I need your help to get me start vi. I have three PXI-4110 power supplies, three SMUs PXI-4130, three DMM PXI-4071, two Muxs PXI-2575 and one oven. I want to build a system using these equipment to measure differential offset.

 

1. First, I want to set the temperature and wait maybe 30 minutes.

2. Set the voltage using PXI-4110 Vcc (+15V) and Vss (-15V) at the same time.

3. Send SPI command or (right now I haven't figure out how to use the SPI so I might to set some voltage on the SPI communication circuit using another power supply)

4. Measure the offset voltage Vin1 and Vin2 using Mux.

 

I would be very appreciate if you can throw some ideas for me. Please let me know if I am wrong. I want to use "for loop" and put stack case to set some paramter for step 1 to 3. For step 4, do I have to use both Muxs at the same so i can acquire the differential or I can split the channels into half by using one mux only.

 

Please help. Thank you very much.

0 Kudos
Message 1 of 2
(2,344 Views)

So how are you planning to control the oven? If its through supplying a voltage then use the PXI 4110. Where do you need to set Vcc (+15V) and Vss (-15V? Furthermore, I dont think the hardware you listed will allow you to perform SPI, see this information for details. If you have 1 signal, you can connect it directly to the DMM (no mux required), however, if you have multiple signals to measure, you can use a mux to connect them to the DMM. I think there would be more recommendations if your questions were more specific, see if you can narrow them down and tackle small parts at a time.

 

-Ciao

0 Kudos
Message 2 of 2
(2,301 Views)