I've had my own views on this for a while, but haven't had to deal with it. But it is coming up again, and needs to be properly addressed....
For example, a Fluke 5720A is used to verify 10 Volts DC on an Agilent 34401A DMM. There are various contributors to measurement uncertainty, which is not my question/focus for this question. But regarding resolution....
It makes perfect sense that the resolution of the DMM is a contributor. But where I have a problem is if I simply enter an output of 10 Volts DC from a Fluke 5720A calibrator, there are opinions out there that the resolution of the calibrator is also a contributor. I could even see the least significant non-zero digit of the calibrator being considered the resolution perhaps. But at a setting for a cardinal value, or even non-cardinal value, the resolution is accounted for in its specifications already.
Any knowledgable inputs as to exactly why resolution must be considered a contributor? Or, are there only certain AB's that think that, or is this subject to adjudication and engineering judgment.
I'd appreciate any knowledgable feedback on this anyone could give. Have a great evening all.
For example, a Fluke 5720A is used to verify 10 Volts DC on an Agilent 34401A DMM. There are various contributors to measurement uncertainty, which is not my question/focus for this question. But regarding resolution....
It makes perfect sense that the resolution of the DMM is a contributor. But where I have a problem is if I simply enter an output of 10 Volts DC from a Fluke 5720A calibrator, there are opinions out there that the resolution of the calibrator is also a contributor. I could even see the least significant non-zero digit of the calibrator being considered the resolution perhaps. But at a setting for a cardinal value, or even non-cardinal value, the resolution is accounted for in its specifications already.
Any knowledgable inputs as to exactly why resolution must be considered a contributor? Or, are there only certain AB's that think that, or is this subject to adjudication and engineering judgment.
I'd appreciate any knowledgable feedback on this anyone could give. Have a great evening all.