Where we can find information about DC Settling Time in user manual Multimeter Device (34461A Model) and what is the value of this time?
When we tiet 2 probes of multimeter together in stable condition , the measurement voltage is not be fixed even after 2 minutes (you can see in a picture as below) .
Because we want to test a device that accuracy of measurment is so important for us (about micro volt ) , this device also has a settling time for itself and when we test it with multimeter , collision of these 2 settling time cause that we can not measure truly and affect our result .
What we should do now ?
When we tiet 2 probes of multimeter together in stable condition , the measurement voltage is not be fixed even after 2 minutes (you can see in a picture as below) .
Because we want to test a device that accuracy of measurment is so important for us (about micro volt ) , this device also has a settling time for itself and when we test it with multimeter , collision of these 2 settling time cause that we can not measure truly and affect our result .
What we should do now ?
This has nothing to do with DMM settling time.
If you would have properly set up and shorted your DMM, it would settle within seconds to around zero.
Please make sure, that you engaged Auto Zero on your 34461A, that your "probes" are low thermal ones, and that the connection junction is really stable regarding temperature, i.e. w/o any external heating. Also chose the correct range for such low voltage readings, i.e. DCV 1V or 100mV range.
Frank