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Need help

 

I have calibrated the VNA. With the short plug it shows 1:12.76 SWR. After calibration if I reinsert the short plug it shows SWR of 1:9554.1 to 1:2147483647.47.

Is there away to do a hard reset back to factory settings? Or is it bricked?

Any help would be greatly appreciated.

Darrell Carothers

Sent from my over-rated IPhone 7 Plus. Any Mis-spellings or grammar errors are due to my IPhone auto correct feature.
 

Before you do any new cal., be sure to clear any past cal memories.

Dave - W?LEV

On Wed, Sep 9, 2020 at 1:20 AM Darrell Carothers <rescuemedic1@...>
wrote:

I have calibrated the VNA. With the short plug it shows 1:12.76 SWR.
After calibration if I reinsert the short plug it shows SWR of 1:9554.1 to
1:2147483647.47.

Is there away to do a hard reset back to factory settings? Or is it
bricked?

Any help would be greatly appreciated.

Darrell Carothers

Sent from my over-rated IPhone 7 Plus. Any Mis-spellings or grammar
errors are due to my IPhone auto correct feature.



--
*Dave - W?LEV*
*Just Let Darwin Work*
 

What do you expect the SWR of a short (or open) to be?
 

Yes Sir. I reset it before recalibration.

Darrell

Sent from my over-rated IPhone 7 Plus. Any Mis-spellings or grammar errors are due to my IPhone auto correct feature.

On Sep 8, 2020, at 20:24, David Eckhardt <davearea51a@...> wrote:

?Before you do any new cal., be sure to clear any past cal memories.

Dave - W?LEV

On Wed, Sep 9, 2020 at 1:20 AM Darrell Carothers <rescuemedic1@...>
wrote:

I have calibrated the VNA. With the short plug it shows 1:12.76 SWR.
After calibration if I reinsert the short plug it shows SWR of 1:9554.1 to
1:2147483647.47.

Is there away to do a hard reset back to factory settings? Or is it
bricked?

Any help would be greatly appreciated.

Darrell Carothers

Sent from my over-rated IPhone 7 Plus. Any Mis-spellings or grammar
errors are due to my IPhone auto correct feature.



--
*Dave - W?LEV*
*Just Let Darwin Work*
 

I was told it should be >9000 during calibration.

Darrell

Sent from my over-rated IPhone 7 Plus. Any Mis-spellings or grammar errors are due to my IPhone auto correct feature.

On Sep 8, 2020, at 20:46, david.hostetler@... wrote:

?What do you expect the SWR of a short (or open) to be?
 

For an open/short the VSWR is (mathematically) infinity. Displaying that is a practical limitation. Instead, you might look at dB(|S11|) or the Return Loss which should be right around 0dB after a calibration. Or, just |S11| (in linear units) which would ideally be 1.0. Of course, all this to within practical limits which, if you're within 1% of 1.0 that's a 40dB return loss and pretty darn good for most every application.

Hope that helps!
Darrell -- AF5FX

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