See while using full bridge strain gauge we get output (Vout/Vexe)*10^6 ppm as But but actually we select Vexe in logger. If i select 3v for Vexe how to ensure it gives 3V exactly. When i use multimeter to measure Vexe am not getting 3V.. is there any alternate to measure Vexe??

Hi Raj,

When you use voltage excitation bridge, there are two method on getting this excitation voltage.
One of them comes from external source including that 3V excitation.
The other comes from dataTaker voltage source with an approximate 4.5V.

If you plan to use an external 3V source, you may use a precision power supply.
On measuring voltage ratio of the bridge, dataTaker will consider the voltage its measures.
Remember, there are two syntax for voltage excitation bridge:
1*V(BR,W)
1BGV(N)

The first syntax will measure an excitation voltage to be used in bridge channel (see BR option).

Best regards,
Rudy Gunawan