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I did a new cal on the H4. It turned out as before, so the old cal was good. Here are my notes. H4 phase 1.5 after cal, no cal devices attached. w coax (75 VoP) extension, 1475 ps delay to correct,

thanks for confirming ~R~

Thanks...I was using an existing cal, and was resetting the delay to zero before connecting with the software. It makes sense that the delay will be sent to Saver if Saver uses VNA calibration. I was

I attached 3M of RG-316 to a NanoVNA-H4 and used the TDR function to calculate the round-trip delay. It measured 29.5 nanoseconds. Then the offset delay was adjusted on the NanoVNA until the S11 phase

Tested NanoVNA-H4 with Saver Version 4. Offset delay works OK - same as version 3.10. Note S11 phase is flat after delay added.... Roger

H/H4 firmware by default apply internal delay if set and after send it ti CPU. You must reset on device before use Saver software.

In your image, I see -1540 ps of correction. The value agrees w a VoP of .66 and .305 m of coax. When do we expect to see a negative angle? I cal'd with ~175 mm extensions, then when I ran the test

Just tested -App v 1.1.208 It needed -1750 ps where I expected the same. It is interesting that I calc the delay based on one way, but the H4 displays it as round trip.

I ran a quick test this morn. Don't have time to investigate, BUT nVNA-H4 v4.3_MS, firmware 1.1 Saver 0.3.10 Seemed to work better than 0.4, but still puzzling. On -H4, I corrected by -1750ps, as

I just tried this again ... and it worked. The difference? I have no idea. As a note ... my high end Tek VNA measured the "test awful load" at 57.91+97.35j (|Z|=113.27). The nanoVNA, with applied

/Sorry, no text. /I happened to have the opportunity to measure the same as Roger did when I read this post. Exactly the same measurements made (from 50 kHz to 50 MHz). Calibrated with SDR-Kits BNC

Op 12-5-2022 om 04:03 schreef Rich NE1EE:

I am running the Saver 0.4 version with a nanoVNA V2Plus4 with FW git-20210530-412578c Ralph WA2PUX YouTube Channel: Electronics for the Inquisitive Experimenter

Thanks for the update...It might be related to Saver version, because 0.4 is the latest...and it might be related to -H4 firmware version...what are you running?

I am using NanoVNA Saver 3.10. Offset delay works for me. I calibrated my NanoVNA-H4 device (Not in Saver) from 50 kHz. to 300 MHz. and then attached a 12 inch cable to CH0 (Port 1). You can see the

WOW! Seems like a lot of hoops to jump through to use the Saver software when measuring impedance. The "VNA View" software does it slick as can be. So, I suppose that the thought is to use the "VNA

Many thanks for your analysis and comments Roger! -- Best Regards, Tom, VA7TA

Maybe nothing :-) There are some things in Saver that don't work well. I havna tried this approach, but have applied e-delay on my -H4, and it works as expected. I take two approaches to using remote

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