Hi, I can't get the VNWA software working with Ivan's VNA PCB 5.2. I have the delphivna.dll 1.0.0.1 signed 28.7.2011 and vnadll.dll 1.0.1.24, VNWA version is...
... I do know that VNWA software works very well with my N2PK VNA with USB port. However, I generally prefer and use myVNA although I do alternate between the...
... Thank's Paul for quick answer, can you tell what versions you are running? I've aldeady discussed with Tom, he suggest to turn in this reflector. -- Jarmo...
Hi Jarmo,
It sounds as if you may have already placed a blank (nothing in it) N2PK.INI file in with the other files. If you haven’t then you won’t be able...
... Yes empty n2pk.ini file has been set, and I can select the N2PK VNA instrument. ... Clock freq says 156.25 MHz. Minimum VNA setling time is 0 us. Detector...
Hi Paul, Hi Ivan, I replaced the U260. When I tried the calibration, I really crossed the fingers. Well, all process got through. I was very very very happy. ...
Hi Masaya, ... This is very puzzling to me and very disappointed for you, I am sure. I have not seen a problem like this before. I would be concerned about...
Paul, Dave, has any of the wiring changed with the latest vna board with integrated USB? Jarmo can detect only one ADC while I can detect both on my old vna. ...
Hi Paul, Thank you for your quick response. The troubled unit is an original version, so there is only one detector. I checked IO lines using myVNA, ADC SCK...
Hi Tom, ... I seem to recall now that Ivan eliminated the SDO inverters on the USB only PCB and that required a special DLL to handle that. Maybe check with...
Hi Tom , Paul, Jarmo there was no change in wiring after USB was first introduced. May be we have people here on the group who use the VNWA program with their...
Hi Ivan, the problem is that one of Jarmo's detectors is not found by VNWA but by myVNA. Is there any changed polarities as Paul indicated? On my old box with...
The SDO inverters were eliminated on both detectors at once when USB was first introduced. After that theer was no change in USB wiring, only in the components...
Hi al, Problem solved. I made a fresh install and copied only the VNWA.exe, delphivna.dll, vnadll.dll and empty n2pk.ini file in new empty directory. It seems...
Jarmo, I verified that both N2PK detectors are active under VNWA. I can send you print screens of my VNWA set-up or .INI files. Just let me know what you...
Sorry for the previous post. I see that you now have it working. Paul, W9AC ... From: Paul Christensen To: N2PK-VNA@yahoogroups.com Sent: Saturday, February...
Hi I have long had in use an early 2410 based N2PK VNA but recently decided to upgrade to a dual 2440 detector, USB version based upon Ivan's current PCB. All...
Bob, there is a few things to check. You could start with checking the calibration standards and cables, may be try a different set of cables and a new Thru...
Ivan Thanks for the suggestions. I'm out of time now as we're off to dinner with friends this evening. Progress tomorrow, hopefully. "Thru" cal used the same...
Bob, not sure of how you have myVNA software configured, but is it possible you're scanning reverse and that peak is overshoot before settling? W4ZCB Ivan ...
Hi Bob, I'm thinking perhaps a time constant related issue, especially since the BPF shows it and the thru doesn't. Assuming you have checked DC voltages,...
