Starting from second half of Year 2017 SATEC began to fabricate new versions of mother boards:

N1. Model with 1MOhm voltage input impedance.

N2. N1 features is included.

      a) IRIG-B port is included on CPU Card.

      b) Fixed stability of optional RS485 communication port.

      c) Improved filter of current inputs.

N3. Modificated mother port.

For this time has same functionality like N2, but prepared for additional functionality in the future.