IBOC System/HD Radio
The IBOC (In-Band- On-Channel) system is offered as the digital radio. With the intro-
duction of the CIC, the control unit of the IBOC system has been integrated in the head
unit as the IBOC decoder.
The IBOC system was developed by the company Ibiquity and, with the aid of a decoder,
enables the reception of HD (High Definition) radio through the FM/AM double tuner.
This system simultaneously broadcasts an analog and digital signal.
A special oscilloscope (spectrum analyzer) would show the digital components at both
sides of the analog wave of the FM frequency (step shape).
The IBOC system receives the signals with the aid of the FM double tuner module.
These signals are then routed to the IBOC decoder which adds the digital data stream to
the audible music signals.
Index Explanation Index Explanation
1
FM/AM antenna connection
3
FM/AM double tuner module
2
FM-RTTI module
4
IBOC decoder
Location of the IBOC decoder in the CIC
66
F01 Audio Systems
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