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I'm trying to get my head around the NI-9375 continuous output current from the data sheet. The NI-9375 card is obviously a 16 DI / 16DO module, and with "all channels on" (presumably this is only referring to the 16 Digital output channels and not all 32 I/O??) the max current is 125mA per channel (16 x 125mA = 2 amps) and if only 1 channel is on that 1 channel can safely deliver 500mA, but then it states only 0.25 A² for the entire module and i don't understand this as 0.25² is only 62.5mA. Clearly i'm not understanding the datasheet?? Can anyone explain?
Have you seen the calculation on page 5? This might help part of this.
The other part is that Power = I^2*R. It's just a relationship between the power of the module and the resistance - I'd just make sure you follow the calculation on page 5 and you should be fine 🙂