It sounds like they have a time-to-digital converter instrument that has a USB interface rather than one that you plug into a computer's motherboard. Either way you should have gotten drivers for the instruments. At the very least you should have gotten some sort of DLL or library that you're supposed to use to call from a program.
i am having project of TDC (in labview) and we have used pci card for interfacing ....now i have to shift that whole interfacing insteat of pci card on usb ...i am having problem in converting the write and read vi of pci card into usb.i am attaching that file ..in that file visa resource i have used pci card but now i have to replace that with usb raw when i m replacing that then i am not able to write in that visa out.
I want to also add that the type of USB interface will make a difference. For example, the use of FTDI (http://www.ftdichip.com/) devices and their drivers is pretty simple to use with LabVIEW.
does anybody tell me how to open the visa session and write the register values of time to digital converter gpx in usb...i have attached file of pci card.in my previous message.please have a look...
You have to find out which pipe your USB device is going to be expecting data on and then write to it. The format of the data, which pipe to use, etc. will depend on how your USB interface was implemented. I would assume that the person you did the implementation is someone you work with and not a member of this forum.
hello does anybody tell me how to read the data in usb interfacing.i have to read my data of TDC registers using the primary local bus of usb .for high byte i am getting currect values and for low bytes its reading wrong values.so please have a look to my program file attache
