Solder a ``100 nF`` capacitor parallel to ``R315`` in order to implement a low pass characteristic of the difference amplifier in the :ref:`analog frontend<hw_analog_fe>`. This massively increases EMI performance which prevents the :ref:`ADC Watchdog<firmware_meas_adc_watchdog>` from triggering.
Power Supply
------------
..note::
Replace transformer ``BV-EI-303-2010`` with ``BV-EI-303-2050``, which has the same footprint but a little more power and does not heat that much.
solder jumpers to bridge GND and Earth together must be soldered for the SD card slot to work properly. The card detect's switch terminal is on Earth potential.
