1k Resistor that shift voltage

[krispiekream]

AI, 0 - 100mVdc (5V common)

I am trying to understand why these values were used.

0 mV
25 mV
75 mV
100 mV
why

0 mV
25.3 mV
75.6 mV
100.9 mV

"there is an 1k resistor inline that shift the voltage that actually go into the unit"

can someone show me how to calculate 25.3 given the circumstances.
thank you

 

[KlausST]

Hi,

I guess you need to elaborate your question.

We dont know
* how you get these values at all
* what "the unit" is.

Klaus

 

[Audioguru]

Maybe the 1k resistor is actually about 1010 ohms?
All 1k resistors I use have a 5% tolerance then their resistance is from 950 ohms to 1050 ohms.