D.A.S. Audio TCM-3 - Manual (Page 5)

(3)RETUNE L/S
When press the SEL button for more than 2 seconds, it is activated as selecting mode of these
function.
(4)MASK DPI (2)
When press the SEL button for more than 2 seconds, it is activated as selecting mode of these
function.
MASK DPI: masked only the AF which has different PI.
MASK ALL: masked the AF which has different PI and NO RDS signal with field strength.
(5)BEEP MODE (2) (NO FUNCTION)
When press the SEL button for more than 2 seconds, it is activated as selecting mode of these
function.
4. MODE BUTTON (MODE)
By pressing this key, user can select RADIO mode or CD/MP3 PLAYER mode.
USING THE RDS FUNCTION
What is RDS?
The RDS (Radio Data System) is a digital information system developed by the EBU
(European Broadcast Union). Piggy backed on normal FM broadcasts, RDS offers a variety of
information services and automatic retuning functions for RDS-compatible car stereos.In1988,
RDS became available in the United Kingdom, France, West Germany, Ireland and Sweden.
Test trans-missions are being conducted in many other European countries. It is expected that
RDS will be available in most western European countries in the near future.
5. AF/REG function (ALTERNATIVE FREQUENCIES)
When press short, AF/REG switching mode is selected.
When AF/REG switching mode is selected, the radio checks the signal strength of the AF all
the time. When press long, it is activated as regional mode ON/OFF.
-Regional mode ON:
AF switching or PI SEEK is implemented to the station which have all PI codes same as
current station. REG segment is turned on in LCD display.