I believe it is a cover-up for larger issues.

And I know what the problem is on the lower liguid hydrogen tank sensors.

It is an analog to digital computational problem on the old A/D chips
they are using to feed the newer diagnostic computers. Essentially,
it's an interface problem based on the old EPROM drivers of the old A/D
devices.

They should have replaced the whole system of temperature gauging
devices in the ET.. But that Alabama Senator.. What's his name? Has
blood on his hands.

And so it goes,

Rick





Brian Gaff wrote:
Was this the same problem as with the old tank? was it the same sensor?

It smells like an electronic circuit problem, rather than a sensor one,
especially if it can be duplicated. Some mileage might be gained by looking
at the history of this sensor and if anything has been altered over the last
few tanks.
If the hysteresis is caused by electronics, and those electronics are in the
sensor, then I suppose either might be some faulty units, but if the
electronics are in the orbiter, maybe the answer is to switch around the
outputs from the sensors to different processing channels and run a tanking
test.

Brian