incorrect value when I multiply voltage measured

[Brahimkou]

I am using NI6255 Daq, I acquired V across a voltage divider. The value measured is 6 volts, after multiplying the measured value by 2,

I am reading 10.5 volts.  How do I solve this issue?

Thanks,

BrahimKou

[dansch]

Hi Brahim,

Thanks for posting to the NI Discussion Forums! I understand that you are measuring a signal with a 6255 device, but are receiving an incorrect reading. It sounds like you are reading 6 V at first, and then doubling the voltage to 12 V and trying to read it. If this is the case, what you are seeing is expected. This is because the signal is beyond the working range of the device, which is ±10 V. Thus, you will see voltage values saturate just above 10 V. Hope this helps,