To use this Studer card, first make sure your D21m Modular I/O System is powered off. Then, carefully insert the card into the appropriate slot. Once it's securely in place, you can connect your microphones or line - level audio sources to the four analog inputs. When powering on the system, ensure all connections are stable. As for maintenance, keep the card in a clean and dry environment. Periodically check the connections for any signs of looseness. If you encounter any issues, power off the system immediately and consult the Studer support team.
