Using this Studer microphone and line input card is easy. First, make sure your D21m modular I/O system is powered off. Then, carefully insert the card into the appropriate slot. Once it's in place, power on the system. You can connect your microphones or line - level audio sources to the four analog inputs. When using, avoid exposing the card to extreme temperatures or humidity. For maintenance, keep the card clean. You can use a soft, dry cloth to gently wipe the surface every few months. If you encounter any issues, power off the system immediately and check the connections.
