RDC.SMA.001 is an external diagnostic 10Kohm circuit to aid with detection in applications where the user may want to monitor the connection between antenna and radio module to ensure there is no downtime in connectivity. The RDC.SMA.001 has been designed to be used as a plug and play option for a detection circuit where often a complicated internal circuit may need to be designed. The RDC is perfect for prototyping and in places where the detection circuit has been considered after the fact. Typical applications include telematics, E-Call systems, critical communications and smart metering. Being able to detect and diagnose the antenna is a valuable feature for many system integrators, especially for automotive applications. The ability to detect if the antenna is connected to the application is useful for diagnosing installation or production problems as well as any tampering with the system.