I have sometimes need to print out measurement datas from old HP 8720C. Unfortunately old GPIB plotter is damaged, so is anyone done program which can simply save screen data to text file or to Excel via GPIB? If so, I would be very glad to get such a small program.
Hello Dave,
This program is really great and working perfectly !! I put message to program developer can this program save also timedomain information to file. Our 8720C has time domain option and using it time after time when looking for faults from waveguide transmission line (1-port S11 only)
I'm glad John's software works for you. I thought it would. I don't think you can complain too much - I think I responded to you question within 6 minutes of you posting it!
If you save a Touchstone file, which you can do with John's software, you can open that Touchstone file in the software for the low cost 1.3 GHz VNWA
That can then display the time-domain - it obviously does this through using an inverse Fourier Transform.You don't even need to have option 010 on the VNA.
Some time ago, someone posted on the Agilent forums about using MATLAB to give the time-domain representation of a data file.
use IFFT (matlab) for transforming frequency domain to time domain
Joel offered to plot the time domain if the person posted a Touchstone file. Using the VNWA software, I could get the same display as Joel got on his PNA. So that is one way of displaying the time-domain data.
There are other VNAs around which have no display, but connect to a PC. The best known being Copper Mountain, but there is also a few others like L. A. Techniques. All of them support time-domain, and I suspect they can all open a Touchstone file. But I know for sure the VNWA software can.
Dave
I've never used it as I'm a unix person, but I'm pretty sure the GPIB toolkit from John Miles KE5FX
KE5FX GPIB Toolkit
will do what you want. It is free - and I think open-source too. It has an HP 7470A plotter emulator, and there's also a program called vna.exe. Needless to say that saves Touchstone files, and other things VNA related.
Dave