Hello, I have just one question . How the ni9263 and ni 9269 could have the same number of bits (n=16), the same level voltage (+/-10V) and a different precision (9263: 0.11V / 9269: 0.006V)? I think that precision of signal depends on resolution and resolution =V/2^n. Now why the precision is different? thanks regards

So you found out that the number of bits doesn't tell you all 🙂 The resolution of the DAC isn't all. It needs the DAC, a reference source (build-in or external), a supply and an amplifier, all build on a PCB in a housing. Every part plays a role to the uncertaincy/precision, common main enemies are temperature, drift (over time and temperature), humidity .... EMC/noise/.... And, no wonder.... one part is about twice the cost of the other. You can buy a resistor for less than 1c or >1000 times that value ... both migth have the resistance ... well, at a certain point ...

Multifunction DAQ

NI 9263- NI9269 precision

Solved!

Author

I am already start my application and i know the value offset. But i am not sure that it's possible to generate a signal centered apart from zero with ni9263 (for example -1, or -1.5) . I know that we can delete offset by using the soft ( LV) but physically the offset is present in your system.

thanks