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Those numbers do exist, and they belong to 55MHz cards.
You cannot deduce anything from the character combinations - they're almost random. They only make sense with your database, where the number is connected to the product, pictures and sales/service history.
Ok Thanks.
9T4FA went through our QC on November 26th, 2019. It was delivered with the voltage regulator patch for the 55MHz oscillator: We've found that power supply ripple is especially bad for these 55.555MHz oscillators, and a separate voltage reg down from 12V to 5V especially for the oscillator can improve stability, even with a bad power supply.
This has led to the decision to only use 3.3V oscillators for the ACA1234: That rail is locally regulated anyway, and therefore is less prone to power supply problems.
The last reply was more than 365 days ago, this thread is most likely obsolete. It is recommended to create a new thread instead.
