Agilent Technologies Infiniium 90000 Series Programmer's Manual page 957

comparator output is a 1 otherwise the output is a 0. Each of the
comparators has a different reference dc voltage. The output of the
comparators is converted into an 8- bit integer by the encoder.
Channel Input
Figure 8
All ADCs have non- linearity errors which, if not corrected, can give less
accurate vertical measurement results. For example, the non- linearity error
for a 3- bit ADC is shown in the following figure.
Agilent Infiniium 90000 Series Oscilloscopes Programmer's Reference
Vref
+
_
+
_
. .
. .
Encoder
. .
+
_
+
_
-Vref
Block Diagram of an ADC
Waveform Commands
8 bits
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