I have a need to interface a signal conditioner output to a analog input. And the client happens to supply the signal conditioner with the simple instruction that it can supply 0-10V for a strain gauge input of 0-20mV. No more printed or other data sheet available as of now.

And my data acquisition system says this : To ensure fast settling times, your signal sources should have an impedance of less than 1K Ohm

The question is : How to find out the source impedance in such cases ??

Thanks

Raghu