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National Instruments Corp.
5
NI 9208E Operating Instructions and Specifications
Each channel has an AI pin to which you can connect a current
signal. The NI 9208E also has 17 V
sup
pins, one for connecting an
external power supply, and one for each channel. There are also
four common pins, COM, that are internally connected to the
isolated ground reference of the module.
The input signals are scanned, amplified, conditioned, and then
sampled by a single 24-bit ADC. The module provides overvoltage
protection for each channel. Only one channel can be in an
overvoltage condition at a time. Refer to the
Specifications
section
for information about overvoltage protection. Refer to Figure 3 for
an illustration of the input circuitry on the NI 9208E.
