| ??? 06/05/10 23:47 Read: times |
#176440 - Calibrations... NIST traceability.... fun Responding to: ???'s previous message |
So, you make a product. Test the product with some equipment. The equipment that tests the product needs to be calibrated once in a while. The testing test jig is sent to a NIST traceable calibration place once a year. How does the traceability of the calibration guarantee certain outcomes. I've always wondered that when one uses an O-Scope it says NIST traceable, but within their standards do they have traceable calibration equipment that is used to calibrate the O-Scope? Eventually it would have to come back to the original unit of measurement like a ruler is guaranteed to be a foot long because some place has the exact dimensions of a foot that it can be compared to and be withing some spec. Eventually, then you have the argument that the original is not really a foot. At least it is always the same. |
| Topic | Author | Date |
| test the test jig | 01/01/70 00:00 | |
| only ISO believes ... | 01/01/70 00:00 | |
| "Calibration" | 01/01/70 00:00 | |
| ISO9000, concepts and lies | 01/01/70 00:00 | |
| doghouse and flagpole | 01/01/70 00:00 | |
| I agree... | 01/01/70 00:00 | |
| Use loopback and stimuli | 01/01/70 00:00 | |
| "Design For Test" (DFT) | 01/01/70 00:00 | |
| You can not ask us | 01/01/70 00:00 | |
| Yes but... | 01/01/70 00:00 | |
| No silver bullet | 01/01/70 00:00 | |
| Calibrations... NIST traceability.... fun | 01/01/70 00:00 | |
| That is what traceable means | 01/01/70 00:00 | |
| Should be few steps to a national reference | 01/01/70 00:00 | |
| Article on the topic | 01/01/70 00:00 | |
Test the test harness | 01/01/70 00:00 |