Calibration DSO Quad BETA

Products & Technology DSO Quad
1

Hi,
I was wondering about the calibration(?) menu that appears when I press the stop (square) button when channel A or B is highlighted.
How exactly does it work?
The text on top is not very explanatory and I’m not getting the results I expect while experimenting…
This is what I’m referring to:

photo 1.JPG
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I have a DC Power supply that ranges from 0-30V, and a Fluke Oscilloscope to verify the voltage with.
I know the 10V asks for 50V-60V…
Is the calibration reset during a firmware upgrade?
The potentiometers(?) underneath the battery, what are they for?

Last question:
Where can I find the newest firmware?

2

I tried my best to calibrate the Quad.
The following was the calibration screen after I finished:

Calibration.jpg
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What does DIFF stand for? Difference?
My DC power supply is limited to 30V, so I could not calibrate the 10V part.
My Fluke was used to verify all the voltages, it displayed 15.7V when I tested it, below is what the Quad displayed…
FILE001.jpg
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There is a difference of more than 10V!!!
I tried it on all the V settings of CH-A&B, similar results.

Ps. After a few restarts, the values are nearer to normal, but still not what they should be. Not sure why this cured the problem…

3

Now it’s really time for some documentation, at least basic one. I mean manual for operation, we already have schematic and others. I hope later firmwares will have onboard help like these calibration instructions.

4

pls download the manual at viewtopic.php?f=22&t=1929