23 lines
911 B
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23 lines
911 B
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.. _hardware_modifications_v1_2:
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Hardware Modifications for PCB v1.2
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===================================
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Analog Frontend
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---------------
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.. note::
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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.
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Power Supply
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------------
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.. note::
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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.
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.. _hardware_modifications_v1_3:
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Hardware Modifications for PCB v1.3
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===================================
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.. note::
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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. |