One of our most serious concerns came from two thermometer failures during the summer, one of which (370008008D4EB610) failed in the middle of the night while being read:
Shown below are the waveforms from:
The Dallas 1-wire thermometers were being read using a DS9490R adapter. The thermometer is using external power from the adapter. For this test, devices were repeatedly sent:
The flexible speed setting was chosen to match the timing of regular speed operation as well as possible; the settings chosen were:
