How NI PCI 4474 DSA detects an overload to the input channel?

I read "Manual user OR dynamic signal acquisition." It is written that NI PCI 4474 support only digital overload detection.

Here's my question. What is the detection of digital overload? If an analog signal is already converted to digital signal, it can not be signals exceeds the limit. Or the DSA may already be damaged during the CDA process, if there is surcharge from the input signal. Thank you.

Hyun

Yes, the chip has more information about the Board and apply factors of calibration, which is how it can overflow.

What we call "detection of overload analog domain" requires more equipment (i.e. a comparator circuit) to observe the input signal.  Given that the Committee in question is not a comparator to check the input signal, and the way we want to give the user an idea of whether or not their signal is too large, we simply use the mathematics inside the chip. It's better than nothing.

Oh, and I should mention that the protection is managed by a completely different circuit.  The specification should say how much voltage you can apply to the Commission before the protection comes into play.

Germano-

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