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National Instruments Corp.
11
NI 9219E Operating Instructions and Specifications
NI 9219E Circuitry
The NI 9219E is channel-to-channel isolated. Four 24-bit
analog-to-digital converters (ADCs) simultaneously sample all
four analog input channels. The NI 9219E enables an excitation
circuit for all input modes that require excitation, and reconfigures
the ADC and excitation circuits in each mode to accommodate
each type of sensor.
Figure 6.
Input Circuitry for One Channel on the NI 9219E
Isolated
ADC
TEDS
1
2
+
–
CHx
3
6
NI 9219E
Filter
MUX
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