Punch out the plastic and the pins to reduce the wear of the standards. <landrjoh@...> wrote:

I got tired of trying to keep track of all those little SMA calibration standards and adapters that I keep with my NanoVNA, so I made a thing! It's a small pcb that uses common 1/4" wide edge mount SM

Learn the basics of how vector network analyzer (VNA) calibration techniques correct measurement errors. https://www.allaboutcircuits.com/technical-articles/introduction-to-vna-calibration-techniques/

in case someone can't fall asleep in bed at night and needs a simple read https://www.allaboutcircuits.com/technical-articles/understanding-the-12-term-error-model-and-solt-calibration-method-for-vna-

Many schematics can be found on Hugen's github repo - some as *.png or *.jpg, but you should be able to convert them to *.pdf yourself: https://github.com/hugen79/NanoVNA-H/tree/master/doc HTH Martin

Can you send me a NanoVNA-H schematic in pdf format please. Best regards S.A.Udaya Jayantha (4S5SC) No. 72, Elliott Road, Galle.80000, Sri Lanka. Tel.: +94774164087 (SMS) web: https://www.qrz.com/db/4

Note that you say you have a "NanoVNA-H" and then you loaded firmware for an -H4 . . . They are not the same device, and my guess is that your issues are due to flashing the wrong firmware (you don't

I tested the board for shorts but i didn't se any, only a little heat on some components but it's probably normal, a voltage injection should help finding shorts but I never done that, i will try to m

Where is this "mode" setting? I was just through all the settings on my NanoVNA-H4 and I didn't see any "mode" setting anywhere. Zack W9SZ

20231102_081555.mp4 <https://drive.google.com/file/d/1aWBmFXnzeKGvgE_hfkJSyb2M7Tu1Zyh1/view?usp=drive_web> Hello Zack, Thank you very much for your quick response. I would like to mention what's happe

As I see S11 measure not work (hardware problem). Need check all related to reflect signal measure Generator, and audio codec work (no pr6in S21).

Tried all but nothing, seems an hardware problem

I done a complete reset, this includes the calibration reset

After doing the calibration the screen is unreadable since the lines starts going crazy, connecting a load or a short does nothing

I had the same after updating my NanoVNA H and then I bought a NanoVNA H4 same also after updating. Many try helping me here on the forum, but did not solve the problem on either until. I do not know

You must do calibrate-reset at the beginning of your calibration procedure, or the result will be garbage. This step wad missing in your video. Try that first, then we can see what else may be an issu

After you did the calibration, does connecting the short show a point on one end of the Smith chart, connecting the open shows a point at the opposite end, and connecting the 50 ohm load shows a point

I set the stimulus to 100-500 since i was going to test a dual band VHF UHF antenna, then i done the calibration, idk what the blue light means

First off, did you do a calibration for the frequency range you're interested in? Second, why is that blue light flashing? Mine doesn't do that. Zack W9SZ

I recently bought One of this wonderful devices to test, fix and build antennas, learn how they works ecc. But my nanovna have a big problem, the s11 port seems defective, i can only see a big mess an