Axel WOLF 1MS, User Manual, Page: 207 / 229

TECHNICAL APPENDIX
| TECHNICAL APPENDIX 207
16.11.22
RDS TMC (Tuner-1 Tuner-2)
This test checks alarms and traps on Trafic Message Channel service of a Radio tuned on frequency 100.5MHz.
The test was carried out on both tuners.
The system can monitor TMC registered groups presence on tuned radio.
It can also monitor TMC data flow (by monitoring associated data group presence) and TMC service registration (3A
groups with specific TMC AID).
When TMC data groups (usually 8A) are not received for a certain time (selectable by Timeout Data) an error condition
raises up.
Similarly when TMC registration groups (3A) are not received for a certain time (selectable by Timeout Reg.) an error
condition raises up.
On web client TMC field shows the service status:
If TMC service data is correctly received (in respect of timeouts) TMC field print is “OK”.
When no TMC service is broadcasted, TMC field print is “NO SERV”.
When no TMC groups data are
received but 3A TMC service registration groups are broadcasted, TMC field print is “NO
DATA”.
Finally, when no 3A TMC service registration groups are received but TMC data groups are, TMC field print is “NO
REG”.
For the test in Static Mode we have tuned on 100.5 MHz a radio that broadcast TMC service.
We set Data Timeout=20 sec. Group Timeout=30 sec. and Hold Time=40 sec.
Tested in Scan mode with 3 frequencies:
F1: 100.5 MHz
F2: 95.3 MHz
F3: 96.7 MHz
Data Timeout=20 sec.
– Reg. Timeout=30 sec. - Hold Time=40 sec. as depicted below.