User Manual

RedLab 1208LS User's Guide Functional Details
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Figure 11 shows an ideal, error-free, RedLab 1208LS transfer function. The typical calibrated accuracy of the
RedLab 1208LS is range-dependent, as explained in the "Specifications" chapter of this document. We use a
±10 V range here as an example of what you can expect when performing a measurement in this range.
-FS
+FS
Inp ut Volta g e
0
4095
Output Code
2048
Figure 11. Ideal ADC transfer function
The RedLab 1208LS offset error is measured at mid-scale. Ideally, a zero volt input should produce an output
code of 2048. Any deviation from this is an offset error. Figure 12 shows the RedLab 1208LS transfer function
with an offset error. The typical offset error specification on the ±10 V range is ±9.77 mV. Offset error affects
all codes equally by shifting the entire transfer function up or down along the input voltage axis.