How to interpret this pop-up display?

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terrypin
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How to interpret this pop-up display?

Post by terrypin » Tue Feb 12, 2019 7:51 am

I guess I'm missing something obvious here! Hopefully these two
screenshots explain my problem:

https://www.dropbox.com/s/dtxiuf76hapq5 ... .jpg?raw=1

https://www.dropbox.com/s/qvcnxgyavycgf ... .jpg?raw=1

I'm using my 2205A with PicoScope 6.11.10.1540, the recommended last
version for an XP PC.

Terry, East Grinstead, UK

Gerry
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Re: How to interpret this pop-up display?

Post by Gerry » Tue Feb 12, 2019 10:22 am

Hi Terry,

It would be better to post the data files so that we can investigate what is happening?

Regards,

Gerry
Gerry
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terrypin
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Re: How to interpret this pop-up display?

Post by terrypin » Tue Feb 12, 2019 10:32 am

Hi Gerry,

I'll try to reproduce it when I get back to my workshop. But meanwhile can you advise what exactly that facility is meant to display please?

Also, I had no reply to my email Saturday morning asking if your web site was broken. I made several attempts to post this on Saturday, Sunday and Monday, so I assume the answer was Yes?

Terry, East Grinstead, UK

Gerry
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Re: How to interpret this pop-up display?

Post by Gerry » Tue Feb 12, 2019 12:00 pm

Hi Terry,

You might want to check your email, because a reply was sent to your help desk query on this.

When you click to display the cursor value, the window is showing you the co-ordinates of where you are actually clicking on the Channel scales, not the value of the signals on the Channel scales. So, if you want to know the signal value at a specific point on your signal then you need to either click precisely on that point of the signal, or drag a Channel Measurement Ruler to it.

A request for signal tracking cursors has been made to our development team, so that you can drag a Time Measurement Ruler to a point and get the scale values of all active channels at that point, but until any action may taken precision point and click will be your best method.

Regards,

Gerry
Gerry
Technical Specialist

terrypin
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Re: How to interpret this pop-up display?

Post by terrypin » Wed Feb 13, 2019 3:09 pm

Thanks, but I'm still not getting it. In my earlier examples and both of those in this post, the probe (which was precisely on the blue A-channel signal) shows the correct voltage level. But what is that value for the red, B signal? Can't relate that to any 'co-ordinates'.

Could not find the email anywhere! Was the site down?

Terry, East Grinstead, UK
Attachments
ProbesWrong-3.jpg
ProbesWrong-2.jpg

Martyn
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Re: How to interpret this pop-up display?

Post by Martyn » Wed Feb 13, 2019 6:17 pm

If you extend the B scale beyond the 10V, the blue line intersects at roughly where 20V would be. The box is just a position on the screen, nothing to do with the traces.
Martyn
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terrypin
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Re: How to interpret this pop-up display?

Post by terrypin » Wed Feb 13, 2019 6:23 pm

OK thanks Martyn, understood. But what is the purpose of that? What practical use is intended?

Terry, East Grinstead, UK

Martyn
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Re: How to interpret this pop-up display?

Post by Martyn » Wed Feb 13, 2019 6:29 pm

Not sure, it has been like that from the start of Picoscope 6. I have a feature request to add a tracking cursor so that you drag in a time ruler and you get the related levels for all active channels.
Martyn
Technical Support Manager

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