Test and Measurement Forum

Units display for measurement

Forum for discussing PicoScope version 6 (non-automotive version)

Units display for measurement

Postby CoyoteDavid » Mon Apr 21, 2014 9:46 am

Can the measurement display show units? I am using a 5444B, and I setup a measurement to show DC Average voltage for a whole trace. I have attached a display that shows values as follows:
Channel: B, Name: DC Average, Value: -1.091 ..., Min -1.473 ..., Max 272.9 ..., and so on.
The problem is, for instance, with Max, is it 272.9 volts? Or maybe 272.9 millivolts? Of 272.9 microvolts? How do I get it to display the units?
Attachments
Measurements_No_Units.PNG
Display showing DC Average measurement with no units.
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Re: Units display for measurement

Postby aarne » Mon Apr 21, 2014 6:26 pm

Snap1.png

Snap2.png
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Re: Units display for measurement

Postby CoyoteDavid » Mon Apr 21, 2014 7:18 pm

Thanks. Turns out I already had the box checked for "Column Auto-width". To get it to display, I have to toggle it off and then back on again. Even if I save it as the startup settings when it is working OK, as soon as I close PicoScope and start it again, it is back to not showing the units.

So it appears that to get it to display units, I have to toggle the "Column Auto-width" off, and then toggle it back on again each time I start PicoScope!
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Re: Units display for measurement

Postby aarne » Mon Apr 21, 2014 7:38 pm

And preferences.xml shows how? Maybe try to manually edit this file?

Snap3.png
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Re: Units display for measurement

Postby CoyoteDavid » Tue Apr 22, 2014 7:59 am

I looked at the XML file, as you show, and it is set "True" already. Here are the lines:

<category name="guiitems">
<preference name="viewpropertiesvisible" value="True" />
<preference name="measurementsautosizecolumns" value="True" />
<preference name="measurementsfontsizeindex" value="3" />
</category>

Maybe you just can't use a font that big!
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Re: Units display for measurement

Postby aarne » Tue Apr 22, 2014 9:06 am

Basically, the font size should not be a problem.

Snap4.png

Sorry, maybe PicoScope support knows the right answer?
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Re: Units display for measurement

Postby Martyn » Tue Apr 22, 2014 1:25 pm

Which version of the software are you using ?
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Re: Units display for measurement

Postby CoyoteDavid » Tue Apr 22, 2014 5:29 pm

I am using 6.8.11.20 with a Picoscope 5444B.
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Re: Units display for measurement

Postby Martyn » Thu Apr 24, 2014 10:40 am

There does appear to be an issue, a very subtle one, in the way that the settings/preferences are saved and then reloaded. I will report it to the team.
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Re: Units display for measurement

Postby CoyoteDavid » Thu Apr 02, 2015 8:04 am

I still have a problem with the measurements display. It cuts off the units value. If I toggle the "Measurements" --> "Column Auto-width" off, then back on, I can sometimes get it back. It depends on what value is being displayed at the time. For example, If I look at a clock signal from a 25 MHz crystal, and set the measurement to show frequency for the whole trace, I get displays that are "25 MHz", or "25.01 MHz", or "24.99 MHz". These values show up 4 places, the "Value", "Min", "Max" and "Average". Usually, the units are displayed as "...", since they won't fit. If I toggle the "Column Auto-width" off, then on again, it appears that whatever is being displayed at the time I toggle it on sets the width of the column. If it happened to be on the "25 MHz" display, then the width is set very short, and it very quickly doesn't fit when the display changes to "25.01 ...". It is very frustrating, since there is lots of room to make the measurement displays wider, but no way to make them wider, so it always ends up cutting off the units display.

The only way I found to work around it is to turn off the "Column Auto-width" function, and manually set the width, which sort of defeats the purpose of the auto-width function. Seems that the software could set the auto-width based on using 4 significant digits and a decimal point. Then it would always fit, instead of fitting only till the next update.
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Re: Units display for measurement

Postby Martyn » Thu Apr 09, 2015 9:28 am

We are aware that this is still an issue with the current release software.

Work is progressing on many fronts, including the UI, so please look out for a new beta release of the software in a couple of months.
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