NI 9225 Operating Instructions and Specifications
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© National Instruments
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11
The NI 9225 analog input channels are floating with respect to
earth ground and each other. The incoming analog signal on each
channel is conditioned, buffered, and then sampled by a 24-bit
Delta-Sigma ADC.
Each channel provides an independent signal path and ADC,
enabling you to sample all three channels simultaneously. Refer to
Figure 5 for an illustration of the circuitry for one channel of the
NI 9225.
Figure 5.
Input Circuitry for One Channel of the NI 9225
NI 9225
AI+
AI–
ADC
Amplifier
Overvolt
a
ge
Protection
Prefilter
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