Changes between Version 10 and Version 11 of WikiStart

Timestamp:

Mar 17, 2017, 12:44:25 PM (7 years ago)

Author:

bouyer

Comment:

--

WikiStart

@@ -52 +52 @@
 excluding the value at 0mA, the error with the measured ADC output is
 at most 4, which is within the noise.
-[[Image(i_o.gif, 50%, align=right, title="current to ADC outut",longdesc="current to ADC output")]]
+[[Image(i_o.gif, 50%, title="current to ADC outut",longdesc="current to ADC output")]]
 
 We repeated the process for the tension inputs. Here we have a +/-5 unit error on the ADC's output for voltage inputs. This is less than 0.13% of the full range (or +/- 29mV on the 23.88V range). Below are plots  for measures on the 6V scale.
+
 [[Image(0.171V.gif, 50%, align=left, title="ADC values for 0.171V",longdesc="ADC values for 0.171V")]]
 [[Image(5.996V.gif, 50%, align=right, title="ADC values for 5.996V",longdesc="ADC values for 5.996V")]]
+
+For 5.996V, we expect 4045 at the ADC output and we did read 4041 0r 4042.
+This is less than 0.1%. As for current we use the 5.996V result to fix our
+conversion ration: adv(v)=V*4041.5/5.996. With this function, the error with the measured ADC output is at most 5.
+
+[[Image(v_o.gif, 50%, title="tension to ADC outut",longdesc="tension to ADC output")]]