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Clearly the negative real part in this case is in error. As has been pointed out, calibration error is a very likely culprit. Here's one form of calibration error that does not seem to be widely

I not see any reason use in SAA2 1024 not calibrated point mode for CPU send (this need a lot of ram) I test speed on H4 (on V2 result should be some) (thanks OneOfEleven for add points/sec measure):

On Sat, Sep 5, 2020 at 07:51 AM, OneOfEleven wrote: Looks nice! Does it use the same serial commands as the v1 I wonder ? ======================================================== OneOfEleven, Since

Unfortunately, for VNAs, the uncertainty of the displayed number depends on not only the value being measured, but also the calibration

The measured reflection magnitude is greater than 1.0 by 0.002 at most. To put this into perspective, on a Keysight PNA, in the best case (calibrated with an ecal), the reflection magnitude

It contains much more than just HPAK information. Much, much more. Navigate up a couple of directory levels and one will see directories for all kinds of test equipment and other electronic topics.

This is dedicated to ALL HP. Quite an excellent source. Looks like it has test gear and manuals dated back to the 50 and 60's. As well many of the bench briefs. Excellent source for the repair of hp

From the looks of it that's a site about HP and Agilent test equipment. Does it have NanoVNA information also? If not, I would inquire about it in a group dedicated to those brands of test equipment.

Agreed that his values are very close to 1.0 and that re-calibrating may not solve it. The relationship between S11 and the network impedance ZL is: S11 = (ZL-Z0)/(ZL+Z0) where Z0=50ohms resistive,

Hi, In the Calibration menu of the NanoVna-H4? I have to start with the Open. When I use the Calibration Assistant of the NanoVna Saver 0.3.6-rc2 to calibrate the NanoVna-H4 then I have to start with

Looks nice! Does it use the same serial commands as the v1 I wonder ?

One trick with this kind of measurement (where the reflection coefficient is very close to 1, because the DUT is close to being a short) is to put a resistor in series with the inductor you are

I think you're pretty good. It shows under 2:1 on all bands. 73, Zack W9SZ wrote:

On Sat, Sep 5, 2020 at 04:08 AM, amirb wrote: Hi Hugen can you show the exact hardware inside this new unit? I mean the schematic and a picture of the board? the original SAA-2, which has a 2.8"

Forget most of what I said, looking at the phase again you are probably in a reasonable impedance region to measure in shunt configuration (although hard to say exactly without knowing location of the

SWR looks suspiciously good for that wide of a spectrum.

Dear Friends, Anyone know who Manager this page? http://bee.mif.pg.gda.pl/ciasteczkowypotwor/HP/Publikacje/ or can help to find a Reference? Thanks,

What is the expected inductance? How exactly is it connected? The most likely explanation seems to be that your inductor looks more or less like an open-circuit at the frequency you are measuring, so

On Sat, Aug 1, 2020 at 01:24 PM, Hugen wrote: > > There is no innovation, just a new shell. > Since this group has been dissatisfied with the SMA connector and the 2.8-inch > display, we installed the

Every measurement has some uncertainty. Each measurement should be written as x plus or minus y, where x is the best estimate, and y is the uncertainty. Your values are awfully close to 1.00000; all