Our first run of boards at the mainboard production facility uncovered a minor problem with the Analog-To-Digital converter (which allows us to measure FID readings). This sensor is so sensitive (to read low concentrations) that the standard production and subsequent cleaning process is not sufficient. The sensor was measuring microscopic flux residue from the board’s production. This was not initially detected on the first batch of 20 final production boards that had been assembled.

Our working assumption is that the first batches were cleaned by the engineers who designed the boards, while the latter batch was cleaned as a part of the production process. The difference in result, when reflected in electrical currents measured in pico amps, proved troublesome.

The problem manifested on approximately 50% of the units. Unfortunately, the boards must go through a time-consuming assembly, testing, and potting process, then installed in an actual phx42 before the issue can be discovered.

We have modified this part of the process to address the issue and expect the second batch of updated boards to go into phx42s on 4/12.


Assuming that we have effectively resolved this issue and we achieve a 100% success rate on that batch, we will return to our accelerated production schedule of 20 – 25 phx42s every two weeks.

We have currently delivered and placed into service 4 units in the US and a unit in Taiwan. All deployed units are performing according to expectations.


Please note: your site delivery schedule is dependent on the completion of the Pre-Delivery Checklist, software availability, and installation schedule. Please contact sales@ldartools.com with any questions.

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