3M4DDC User ManualTable of ContentsImportant Safety Information 4Service Information 4Introduction 4M4DDC Key Features 5M4DDC Technical Specifications 6Unpacking and Installing 7Typical Installation 8Experiencing TimeLock for the first time 9Navigating the Tuner 12Front Panel 12Rear Panel 14LCD Display 14Navigating the WebServer 17WebServer – Main 18WebServer – TimeLock 21WebServer – Level Lock 22WebServer – Alarms 23WebServer – System 26WebServer – Logging 29WebServer – Inputs 30Restore Factory Settings 30Three Year Warranty 31M4DDC - Features• Proprietary TimeLock TM Algorithm – Automatically maintains perfect time alignment ofthe HD Radio TM MPS and HD-1 audio streams.• Robust Level-Lock Algorithm – Maintains average audio level differences between theMPS and HD-1 audio streams to less than 1 dB (content processing dependent).• Standalone Operation – 1 RU solution includes an off-air AM or FM receiver, DSP-based TimeLock TM and Level-Lock algorithms and +/- 7.5 seconds audio delay.Connect a receive antenna along with your MPS and HD-1 streams and your HDbroadcast is automatically aligned.