Dab Structure And Reception Method - Panasonic SC-HC20DB Operating Instructions Manual

DAB
DAB (Digital Audio Broadcasting) is a new form of radio that is
broadcast digitally. Unlike regular analogue broadcasting, digital
radio deteriorates less, and is thus able to provide quality sound
closer to that of a disc.
DAB structure
Bands
There are two types of DAB bands, "BAND III" (receivable in
this unit) and "L BAND" (not broadcast in the United Kingdom
and not receivable on this unit).
Frequencies
There are 38 frequencies on BAND III. Among these, 10 are
used in the United Kingdom (current as of January, 2010).
Ensemble, station and service
The number of stations that makes up one frequency differs
between DAB and analogue radio. Analogue stations broadcast
on different frequencies, even if it is the same company
doing the broadcasting. With DAB, however, it is possible to
broadcast a number of stations on the same frequency.
In DAB terminology, an ensemble represents a group of
stations on the same frequency.
STATION 1 STATION 2
PRIMARY PRIMARY
SERVICE SERVICE
As shown in the diagram, an ensemble consists of a group of
stations with primary services and secondary services. This
means, for example, that commentary on sports events from
different areas can all be broadcast at once.
8
ENSEMBLE
STATION 3 STATION 4
PRIMARY PRIMARY
SERVICE SERVICE
SECONDARY SECONDARY
SERVICE 1 SERVICE 1
SECONDARY
SERVICE 2
DAB reception method on this unit
Depending on the region, there is a difference between
broadcast frequency and stations broadcast along the same
frequency.
For this reason, a memory of receivable stations should first be
created and then selected from those memorised stations as
the reception method.
DAB Auto scan
This function searches for currently receivable stations and
inputs them into the unit memory.
When DAB is selected for the first time, this function starts
automatically.
• Depending on some factors such as the broadcasting time
availability, the station may not broadcast even if it is stored
into the memory. If this occurs, "NO SERVICE" is displayed.
Station memory updating
When there is a station name change, or a new station begins
broadcasting, the unit memory is automatically updated when:
• the previous station name is displayed by selecting
"STATION TUNE".
• the new station is displayed by selecting "STATION TUNE"
where another station has already broadcast on the same
frequency .
Deleting stations that are no longer broadcasting is not
automatic. If you want to delete a station, perform Auto scan
again and a new memory will be created.
When a new frequency begins broadcasting, stations on the
new frequency are not automatically added to the memory.
Perform Auto scan to add them to the memory. You may also
need to change the Auto scan range if the new frequency is
outside the factory-set Auto scan range (➡ page 10).
Station tune
You can select stations from the memory created (➡ page 9) in
alphanumeric order.
You can easily select your favourite stations by using presets
(➡ page 9).