I have a 34461A DMM. I want to communicate with it on a virtual com port. When I install the drivers I see no virtual port. I have Labview and Visual Studio installed. Are the NI drivers interfering or what?
I can see the meter in NI MAX.
I have a 34461A DMM. I want to communicate with it on a virtual com port. When I install the drivers I see no virtual port. I have Labview and Visual Studio installed. Are the NI drivers interfering or what?
I can see the meter in NI MAX.
The 34461A won’t show up as a Virtual COM Port, because it doesn’t support that protocol. Instead, it will show up in Device Manager as a USB Test and Measurement Device.
You’ll also be able to see it in NI-MAX as a USB device.
Then to control it in LabVIEW you can use the VISA .vi’s to send and read commands.
In Visual Studio you can use either VISA (a C-style API) or VISA.NET (a .NET API) to send and read commands.