Calibration and accuracy with 2.72.

hello i'm trying to calibrate my 2.72hw with gabonator app... 0,5V is no problem... but i cant set 1.5v corretly... the digits ends on 8 0 0 0 while i just have 1,378V ....

any suggestions..!
thanks

edit:
ok i found it... i had my probes on 10:1 .... on 1:1 i can set the voltages...

but... if i try to control than the voltage with the adc settings, i have only on 0.5V the correct voltage on my multimeter... on 0.4v setting i'm on 0.127v ... on 0.3V i'm on 2.52V , 0.6v are 0,88V , 0.7v are 1,26v.... 0.8V are 1.65V .... 0.9V are 2.04V on my multimeter..

something hast to be wrong...

i've just this guide:

Quote:

Calibrating Adc:
Go to User app/Calib tab, select Adc menu item
Connect volt meter to Waveout
Change the value (four digits) next to 0.5V label until you get exactly 0.5V on your voltmeter or multimeter.
Do the same for 1.5V value
Click on "Use labels", the dialog will hide
Now you can check proper DAC calibration by changing the voltage shown on Adc menu item with navigation buttons, the voltage shown on display shoud match the voltage measured on the WaveOut connector within the error +-0.001V

Statistics : Posted by cory.play • on Fri Feb 21, 2014 1:39 pm • Replies 5 • Views 299

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