Importer Plus Technical Instruction Manual List of terms
Issue 0.02 2010-03-29 Page 11-1
Section 11: List of terms
This section defines some of the terms that are used in Nautel documentation.
AAS. Advanced Application Services
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 of connector used in professional microphones). One cable carries
both left- and right-channel audio data to the receiving device.
Cat-5. Short for Category 5. Network cabling that consists of four twisted pairs of copper wire
terminated by RJ45 connectors.
GPS Synchronization Unit. The GPS synchronization (or synch) unit accepts the studio feed
audio in AES/EBU format and converts it to the 44.1 kHz sampling rate used throughout the
system. The GPS synch unit also contains the GPS receiver that locks onto the Global Positioning
System, and determines the site location and time. This information is then passed onto the NE
IBOC to be transmitted as part of the station information. The GPS receiver also provides 10 MHz
and 1 PPS signals that are used within the NE IBOC for synchronization purposes.
EOC. Ensemble Operations Center.
EXGINE. An HD™ Radio component which resides in the exciter. The Exgine decodes the Exciter
link data and produces the appropriate I/Q modulation.
GPS. The Global Positioning System is a system of satellites and receiving devices used to compute
positions on the Earth.
GUI. Graphical User Interface
HD™ Radio. High definition (HD) Radio is another term for In Band On Channel (IBOC)
technology. HD Radio is a trademark of the Ibiquity Digital Corporation.
IBOC. Nautel In-Band-On-Channel technology provides high quality digital audio over existing AM
and FM radio channels.
LAN. Local Area Network.
MPS. Main Program Service
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