Nautel XR12 Installation Manual

Also see for XR12: Troubleshooting manual Operation and maintenance manual Preinstallation manual

XR12 Installation Manual List of termsIssue 3.0 2009-07-15 Page 14-1Section 14: List of termsThis section defines some of the terms that are used in Nautel documentation.AES-EBU. Audio Engineering Society/European Broadcasting Union (AES/EBU) is the name of adigital audio transfer standard. The AES/EBU digital interface is usually implemented using 3-pinXLR connectors (the same type connector used in professional microphones). One cable carries bothleft- and right-channel audio data to the receiving device.AMC. Amplitude Modulation CompandingAntenna Tuning Unit (ATU). A device that matches the transmitter to the impedance of theantenna.B+. The high voltage dc generated by the transmitter’s ac power supply for use within the transmitter.The B+ voltage is used to supply the transmitter’s modulators and other transmitter circuitry.Cutback. A reduction in RF output power, caused by a total power limit fault or the occurrence ofthree shutbacks within a five second period.DAM. Dynamic Amplitude Modulation.DCC. Dynamic Carrier Control.DSP. Digital Signal Processing.HD Radio. High Definition (HD) Radio is another term for In Band On Channel (IBOC)technology. HD Radio is a trademark of iBiquity Digital Corporation.IBOC. Nautel In-Band-On-Channel technology provides high quality digital audio over existing AMradio channels.IPM. Incidental Phase ModulationNE IBOC. Nautel’s In-Band-On-Channel signal generator. See IBOC. Required for XR series IBOCinstallations.PDM. Pulse Duration Modulation.