FMUSER INTERNATIONAL GROUP INC.
广州市汉婷生物技术开发有限公司
32
11.6 System Commands
ADR
Unit Address
(0-255)
Assigns an address to the RDS encoder. Allows connecting more units to one COM port and controlling
them independently (up to 255 addresses possible). Unit addresses 0 and 255 are equivalent. Default
address value is 0 (255). Unit with this address is automatically active after reset for unlimited time. Unit with
address in range 1-254 is not active after reset and can be controlled only if it’s selected by the
SEL
command.
See section 12.6 for more details.
*ADR=0
Sets the unit address to 0 (disables the addressing feature).
*ADR=3
Sets the unit address to 3.
ADR
Returns (shows) the unit address.
COMSPD
COM Port Speed
(0-4)
Specifies the COM port speed. If changed, any valid command must be sent to the RDS encoder on the
new speed otherwise the speed will be set back to its previous value during following minute. This prevents
setting an incorrect speed not supported by the communication channel that can result in connection lost. 0
- 1200 bps
1 - 2400 bps (default)
2 - 4800 bps
3 - 9600 bps
4 - 19200 bps
This command has the same effect as
SPEED
but the format of input is different.
COMSPD=1
CT
Clock Time and Date
(0, 1)
Enables (1) or disables (0) time and date transmission in CT format.
CT=1
DATE
Date
Specifies the actual date in DD.MM.YY format.
The time value stored into EEPROM memory is used on next power up if no battery backup circuit is
connected to the IIC bus.
DATE=30.11.05
30
th
of November 2005
DATE
Not implemented, use
MJD
instead.
ECHO
Terminal Echo
(0, 1)
Determines if the RDS encoder sends an echo (1) of each character or not (0), that it receives via COM port.
ECHO=1
EXTSYNC
External Pilot Synchronization
(0, 1)
0 - Forced internal clock source (for mono transmission)
1 - Automatic external synchronization if pilot tone is present
EXTSYNC=1
LEVEL
RDS Signal Level
(0-255)
Sets the RDS signal level, directly affects the injection of the RDS signal into the FM transmitter.
0 = minimum level, 255=maximum level.
Note: This command will apply only if appropriate hardware is integrated on the RDS encoder board. In
other cases use the on-board trimmer for adjust the RDS signal level.
LEVEL=120
LTO
Local Time Offset
±(0-24)
Specifies the offset between the local time and the universal time (UTC). Expressed in multiples of half-
hours.
LTO=+2
