DAQ1500 getVoltageRatio()

[MarioEduardo]

I have no idea what getVoltageRatio()returns.
IMHO it has nothing to do with the register of the ADS1232.

What function is applied to the value of the register ?
i did yesterday a measurement of various voltages with the
DAQ1500 and a RIGOL and i am curious about the connex.


E.g. a voltage of 99.039 mV returns a value of 0.01954 from getVoltageRatio(). The ratio of Vin / getVoltageRatio() is about
5100 in the range of 1000mV down to 20mV.

A Uref of 5.047V (in my case) with a resolution of 23Bit (because of the sign) gives 0.000601649 mV per bit, thus expecting round about 164613
from getVoltageRatio() .


Pls enlight me ...
Mario

[fraser]

getVoltageRatio() does not return a register value, it returns the voltage ratio, ie Vin / Vref.

0.099039V/5.047V = 0.019623V/V