Axel Falcon VS, Руководство пользователя, Страница: 74 / 111

DATASET 1 CONFIGURATION
PROCEDURE B (METHOD B)
As mentioned earlier, Method B is used when there are large numbers of alternative frequencies and/or when the
transmitter also has frequencies transmitting different radio programmes at different times of the day (subdivision, local
programming, etc.).
In the latter case, the mobile receiver must check whether the AF is transmitting the same content before selecting
another frequency.
Each list begins with the tuning frequency (for which the list is valid) and up to 12
frequency pairs in a row, each
containing the tuning frequency and an alternative frequency. If there are more than 12 possible alternative frequencies,
the list continues with other lists, following the same method.
The order of the frequencies in each pair follows the rules stated below:
-
If the order is ascending, the alternative frequency transmits the same programming as the tuning frequency.
-
If the order is descending, the two frequencies are programmed differently.
01
Going back to the example in the section above of Transmitters B, D and E (where Coverage areas D and E do not
overlap), two further lists will be assigned to Transmitter B, ranked according to the aforesaid criteria so as to take into
account any different programming by certain AF.
Tx B
(tuning frequency: f Tx B
AF1 AF2
Note that the tuning frequency f Tx B is
repeated twice in List 1: in first position, and
then coupled with f Tx D. Tx B transmits the
same programme as D if Tx B < f Tx D, and
different programmes if f Tx B > f Tx D.
f Tx B f Tx D
f Tx B f Tx D
f Tx D f Tx B
The AF lists for the other transmitters are compiled following the same criteria, alternating frequency pairs. NB: if the
same tuning frequency is used by more than one transmitter within the same network, the corresponding AF lists should
not be consecutive (e.g. AF 1 and AF 2). The lists for different tuning frequencies must be positioned between them.
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