Measurement Computing miniLAB 1008 User Manual page 54

miniLAB 1008 User's Guide
The accuracy plots in Figure 4-10 are drawn for clarity and are not drawn to scale.
Gain error is a change in the slope of the transfer function from the ideal, and is typically
expressed as a percentage of full-scale.
function with gain error. Gain error is easily converted to voltage by multiplying the
full-scale (FS) input by the error.
The accuracy plots in Figure 4-11 are drawn for clarity and are not drawn to scale.
Input Voltage
2
Offset=9.77mV
0
Actual
Figure 4-10. ADC transfer function with offset error
Input Voltage
+FS
0
2048
-FS
Figure 4-11. ADC Transfer function with gain error
+FS
Ideal
2048
9.77mV
4095
-FS
Figure 4-11 shows the miniLAB 1008 transfer
Gain error=+0.2%, or +20 mV
Ideal
Gain error=-0.2%, or -20 mV
Actual
Output Code
4095
4-14
Functional Details
Output Code