analog output with external reference

[osvaldo0785]

Dear
I hope they are fine
I would like to know if you can help me
I have a device to which I want to enter voltage variations generated by some device
the problem is that this device only accepts voltage signals that come from the same source of voltage generation
since in some pins it generates 7vdc, 5vdc and in some cases it generates analog voltage, which is modulated by the sensors and returned to the system.
Could you tell me what device I could use that allows me to use this voltage signal and be able to manipulate it as necessary?
I appreciate your help

best regards

[Hamlet23]

Hello

What's the hardware that you are using?

[Henrik_Volkers]

Sounds like a test or calibration setup for ratiometric sensors (bridge, straingage,??) 

Some AO devices allow to provide an external reference .. but with some limits. 

More information is needed !

One metrologic solution: Dynamic bridge standard

[osvaldo0785]

I have not yet defined the hardware that I will use, that is why I require your experience in this type of problem.
Could you tell me what data acquisition system is possible to perform this type of operations

Thanks a lot

[Henrik_Volkers]

Even more imporant is the information what you want achive in more detail!

one important information are the impedances of your DUT

Passive bridge?  Maybe some datasheets?

Target uncertainty, resolution (different thing), traceable for calibration, or 'simple' simulation?

Frequency range?

Just to name some points, we have no crystal ball 😉

Maybe a simple digital pot will do the job, or an extental DAC ...