Use NI-VISA control Ethernet communication with VNA

[xinli]

Chris,

My PC and equipment have same IP sub-net,etc, only last section of IP address not same. So it looks not the IP settings.

Thanks

Xin

[Chris V]

Hi Xin,

Sorry, it's taking a little longer than I thought to get a response from R&D on that error code.  I haven't forgotten about you though!

Have a great day,

Chris

[Chris V]

Hi Xin,

So that error -1073707339 is not a valid VISA error.  Could you have mistyped it?

If the error is actually -1073807339 then it is a timeout error.  Again, I would think this is occuring because your device is not sending out any data.

Have a great day,

Chris

[xinli]

Chris,

Thanks.

When I ran VBA code with NI-VISA, it looks the equipment didn't send back anything because my feedback variable is empty. The confusion thing is that I use OpenChoice from Tektronix to search any connected device, I can see the equipment IP address and its feedback" 100 connection accpted".

Anyway, it looks not only VISA issue. I will continue work on it.

Xin

[xinli · Accepted solution]

Chris

as you said, VNA should return something for my viRead. So I need to add one line

viWrite(xxxx, "*IDN?", xx, xxx) before I do viRead. Now connection is very easy.

Thanks

Xin