I'm about to write a program to model a voltage reference with 1/f and thermal noise. I need to account for the anti-alias filter. At 8.5 digits, the requirements are rather daunting and will need to be handled properly.
Can someone point me to where I can find a detailed description of the input design of any of the high end DMMs? I've downloaded all the application notes and manuals from the 3458A page, but I noticed is was "assembly level" service.
I'll try the 3456A documentation later.