Electronics > Metrology

3458A Gate array failures + various faults

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Oldtestgear:
Another board failure.

I tested 4 off of the A9 reference board (3458-66059) and had one failure. Actually a control loop failure according to the 3458a display.

The LTZ1000 heater appears to have gone open circuit. Has anyone else experienced this failure mechanism? 

This is a failure I was not expecting as this is a simple board.

All comments are welcome.


Phil

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