Group RDS : 1 version A
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Group RDS : 1 version A
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The 1A group allows to transmit data of paging radio, software identifications and program identifications (date and the hour of the beginning of broadcasting)
If it's used, this group must be transmitted at least 1 time per second.
The las 5 data bits of block 2 are used for radio paging informations.
| b4 | b3 | b2 | b1 | b0 |
|---|
The following figure give the meaning for b4,b3,b2 :
| b4 | b3 | b2 | Group codes | Number of group codes |
|---|---|---|---|---|
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0
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0
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0
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No basic paging
on channel |
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0
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0
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1
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00-99
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100
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0
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1
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0
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00-39
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40
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0
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1
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1
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40-99
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60
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1
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0
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0
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40-69
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30
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1
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0
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1
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70-99
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30
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1
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1
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0
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00-19
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20
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1
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1
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1
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20-39
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20
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The b1 and b0 bits are used to synchronized and time interval (see the document describing the RDS standard for more information).
Codes of software configurations ( SLC) are transmitted on the block 3 of the group 1A, the following figure gives the meaning of this data word
| b15 | b14 | b13 | b12 | b11 | b10 | b9 | b8 | b7 | b6 | b5 | b4 | b3 | b2 | b1 | b0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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0
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0
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0
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|||||||||||||
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0
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0
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1
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0
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1
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0
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0
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1
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1
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1
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0
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0
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Not assigned
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1
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0
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1
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Not assigned
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1
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1
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0
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|||||||||||||
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1
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1
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1
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LA : Linkage actuator allows to link this radio to another radio offer the same program.
EPP : Enhanced Paging Protocol: these bits are normally positioned to 0 except when the protocol EPP is used for the international broadcasting
ECC : Extend Country Code : This code is only used when the EPP is used, it defined the selected country.
TMC Identification : Traffic Message Channel. This chanel is used for road information, not used when ODA mode is used for TMC .
Paging Identification : This identification is used only with international multi operator.
Language code : This code allows to define language used by broadcaster.
Reserved for broadcasters : Data reserved for internal management of broadcaster.
Identification of EWS : (Emergency Warning System) This data identify chanel used for emergency or alert transmission (see 9A group for more informations)
The Program Item Number PIN
is the scheduled broadcast start time and day of month as
published by the broadcaster according to the following figure. :
| b15 | b14 | b13 | b12 | b11 | b10 | b9 | b8 | b7 | b6 | b5 | b4 | b3 | b2 | b1 | b0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Hours
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Day: from 01 (00001) to31 (11111)
Hours : from 00 (00000) to 23 (10111)
Minutes : from 00 (00000) to59 (111011)
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