Nautel XR6, Operation And Maintenance Manual

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XR6/XR3 Operations and Maintenance Manual List of terms
Issue 3.1 2013-03-14 Page 6-1
Section 6: List of terms
This 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 a
digital audio transfer standard. The AES/EBU digital interface is usually implemented using 3-pin
XLR connectors (the same type connector used in professional microphones). One cable carries both
left- and right-channel audio data to the receiving device.
AMC.
Amplitude Modulation Companding
Antenna Tuning Unit (ATU).
A device that matches the transmitter to the impedance of the
antenna.
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 of
three 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 AM
radio channels.
IPM.
Incidental Phase Modulation
NE IBOC.
Nautel’s In-Band-On-Channel signal generator. See IBOC. Required for XR series IBOC
installations.
PDM.
Pulse Duration Modulation.