erc ERC-M - LAN-Interface (Optional); DC;DC-Converter Check

EASY-ROTOR-CONTROL M V2.2 Instructions
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This is how it should look like:
3.4 Check of the DC/DC-converter
After checking all assembled components for identity, polarization and solder-bridges, connect 10 to
15VDC to connector J1 as already performed in chapter 1.3.
After connecting DC correctly, you should measure +3.3VDC +/-0.4V at the testpoint shown against
GND.
Testpoint : +3.3V
GND