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Scales on the right-hand side of the display


David J Taylor 2021/03/12 19:06

I noted that the NanoVNA-F has scales on the right-hand side - 0 dB, -10
dB etc. I'm presuming that's possible on the V2Plus4, but I must have
accidentally disabled it!

How can I restore the scale, please?

Thanks,
David
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv

DiSlord 2021/03/12 13:41

H/H4/V2 firmware not have scale text on plot area

David J Taylor 2021/03/13 12:31

On 12/03/2021 21:41, DiSlord wrote:
> H/H4/V2 firmware not have scale text on plot area

Thanks,

Oh, that's a pain, especially as with the larger display there's room
for it.

Little worse than seeing graphs without scales - makes them completely
meaningless! I hope that can be fixed with a firmware update.

David
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv

Siegfried Jackstien 2021/03/13 15:33

you see the scaling of each trace in the upper 4 boxes (say return loss
in 10 db steps ... but trough loss in 1 db steps ... swr in 0.1 steps??)

you can scale each trace to your needs (be it return loss or swr) ...
and so you would have to display FOUR scales on the side and that eats
up too much room i think

even on a large display it will more confuse then help if you have four
scales on the side ... not to mention that you then also have to switch
the scale on and off if you switch the trace on and off

david ... why do you think a trace is meaningless without scale on the
side?? ... you see steps in the upper box and you as the user have set
it there (if you changed default steps and reference spot) ... so you
should know the stepping ... not??

greetz sigi dg9bfc

ps if you need traces with scales ... use the pc software together with
your v2 ;-)

Am 13.03.2021 um 12:31 schrieb David J Taylor via groups.io:

Allen Boogaarden 2021/03/13 09:07

If I want to set up my S-A-A-2 to measure the SWR of a new 80 Meter antenna
I am building, what should the set up precedure be? Thanks for your help.

Al

On Sat, Mar 13, 2021 at 7:33 AM Siegfried Jackstien <
siegfried.jackstien@freenet.de> wrote:

mchenryproj 2021/03/13 17:16

I usually do the calibration of the Short, Open, Load and connect to the feed line or antenna base. I set my lower limit to 1.7MHz and the upper to about 3 MHz and let it sweep.
Easy peasy.
I do turn off all other traces however. Makes it a lot less confusing.  That's for simple SWR for the entire band.  Sorry, that was how I tuned my 160m wire.  All the same except use maybe 3.5MHz for the low and 4.0MHz for the upper limit?  Same concept for wherever you want to be testing but recalibrate if you change bands.  Or calibrate and do 3-30MHz.  I prefer to do it per band if I'm getting serious about testing each band.
SeanKB8JNE

Spell checked by the NSA.

David J Taylor 2021/03/13 19:33

On 13/03/2021 15:33, Siegfried Jackstien wrote:
> you see the scaling of each trace in the upper 4 boxes (say return loss
> in 10 db steps ... but trough loss in 1 db steps ... swr in 0.1 steps??)
>
> you can scale each trace to your needs (be it return loss or swr) ...
> and so you would have to display FOUR scales on the side and that eats
> up too much room i think
>
> even on a large display it will more confuse then help if you have four
> scales on the side ... not to mention that you then also have to switch
> the scale on and off if you switch the trace on and off
>
> david ... why do you think a trace is meaningless without scale on the
> side?? ... you see steps in the upper box and you as the user have set
> it there (if you changed default steps and reference spot) ... so you
> should know the stepping ... not??
>
> greetz sigi dg9bfc
>
> ps if you need traces with scales ... use the pc software together with
> your v2;-)

Sigi,

Thanks for your comments.

Most of the time I only need to display VNA traces with dB, typically
through loss, or reflected power. Yes, four scales would be too many,
but it would be nice to have the option of turning one or two on.

I see too many graphs from a popular OS where the creator hasn't
bothered to, or doesn't know how to display a scale! A horizontal scale
might have numbers, but without any indication of whether they are
second, minutes, days, metres etc. Yes, you can sometimes guess
(0..86400 be a day's worth of seconds). Vertical axes are even more
frequently unlabelled. This is a general point, not specifically with
the NanoVNA series.

Yes, a PC would be fine, but in this case I wanted to use the
stand-alone capability which the NanoVNA V2Plus4 offers, and take a
screen-shot with my phone. Not the normal way I would do things. In
the end I used my NanoVNA-F which does have axes which scale labels.
Hence I had expected that the firmware might have similar capabilities.
I hope the next version will add this.

73,
David GM8ARV
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv

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