DSO firmware version 3.52

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BenF
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DSO firmware version 3.52

Post by BenF » Sat Jan 22, 2011 4:24 pm

Sometimes I miss the equivalent of a bird’s-eye view of the full waveform and other times zooming in on a particular detail of interest is desired. To accommodate this I’ve updated the firmware to support a zoom in/out capability for captured waveforms. There is also a new vertical scrolling capability that will allow us to bring (and keep) waveform peeks within the confines of the display area.

When using these new features we’re more likely to push the Nano towards its min/max voltage limits. To help with this I’ve added a voltage out of range indicator. That is the V/Div information field will display in red when an under/over voltage condition is detected.

The user guide has been updated with details on how to use the new features as well as a new section on voltage range and sensitivity.

The full list of changes can be seen in the enclosed revisions file.

Update 2011.01.25 APP V3.51
- Automatic ground level calibration
- Allow off screen trigger level
- Pressing B for Gnd Pos will reset position to vertical center
- Updated firmware users guide

Update 2011.02.04 APP V3.52 and LIB V3.52
- General improvements and simplification to gain calibration
- Reduced measurement fluctuations
- Updated firmware users guide (new calibration procedure)
Attachments
DSO BenF Firmware v3.52.zip
(346.53 KiB) Downloaded 1190 times
Last edited by BenF on Sat Feb 05, 2011 12:26 am, edited 2 times in total.

Thunderplains
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Re: DSO firmware version 3.5

Post by Thunderplains » Sat Jan 22, 2011 10:13 pm

Excellent, now has a battery indicator.. Thanks Ben

lygra
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Re: DSO firmware version 3.5

Post by lygra » Sat Jan 22, 2011 10:59 pm

Really like the red excessive input color change of the V/Div value. I also appreciate the improved description about XML writes. Resize & Zoom is an excellent addition to the Nano that will greatly improve wave form analysis convenience.

Thanks for all of your effort.

phenoboy
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Re: DSO firmware version 3.5

Post by phenoboy » Sat Jan 22, 2011 11:24 pm

Thanks BenF!

Resize and zoom is simply fantastic addition.

Denis Brazil
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Re: DSO firmware version 3.5

Post by Denis Brazil » Sun Jan 23, 2011 12:06 am

I tested connecting the probe to the signal generator, but the waveform and the values of vrms, puls, vpp, Vmin, vmax, vavg not compatible with this picture
image1.jpg
image1.jpg (43.82 KiB) Viewed 12525 times
This is the image of my test
IMAGE2.jpg
IMAGE2.jpg (45.45 KiB) Viewed 12525 times
Why is there this difference between values and wave?
Help me
Thanks

reini1305
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Re: DSO firmware version 3.5

Post by reini1305 » Sun Jan 23, 2011 12:08 am

Denis Brazil wrote: Why is there this difference between values and wave?
Help me
Thanks
Plug your nano to an USB-Port and you will get the above values ;)

jochcaso
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Re: DSO firmware version 3.5

Post by jochcaso » Sun Jan 23, 2011 1:56 am

Thanks a lot BenF, great improvement. now I'll be able to catch those hard to find glitches.

campbellm254
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Re: DSO firmware version 3.5

Post by campbellm254 » Sun Jan 23, 2011 8:10 am

Ben, thanks a million for the upgrade, but is there something funky going on with the ground position?

A signal that I measured before as having no DC component now has a significant offset.

(and downgrading returns the signal to the expected state).

Maybe I just need to recalibrate?

BenF
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Re: DSO firmware version 3.5

Post by BenF » Sun Jan 23, 2011 3:56 pm

Thanks a lot for all the good feedback! :D
Denis Brazil wrote:I tested connecting the probe to the signal generator, but the waveform and the values of vrms, puls, vpp, Vmin, vmax, vavg not compatible with this picture
The square wave high level will track your battery voltage (4.3V when charging through USB) and so (as reini1305 pointed out) all voltage related measurements will be subject to battery state. The difference in Puls count (higher for V3.4 and upwards) is due to an increase in sampling buffer size between firmware versions.
CampbellM wrote:A signal that I measured before as having no DC component now has a significant offset.
Can you post a screen capture with overlaid measurements of the two conflicting observations so we can see what this is about?

campbellm254
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Re: DSO firmware version 3.5

Post by campbellm254 » Sun Jan 23, 2011 9:10 pm

Hi Ben,

I re-upgraded and could not reproduce the issue. We'll have to put this one down to an upgrade glitch.

I'll keep an eye out for it happening again.

Thanks again for another very useful upgrade.

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