FMUser RDS-C - 12 Further Features; Bypass Relay; LED Indication; External Program Switch

FMUSER INTERNATIONAL GROUP INC. 广州市汉婷生物技术开发有限公司
41
12 Further Features
12.1 Bypass Relay
The RDS encoder board includes a bypass relay providing an alternative way for the MPX signal on power supply
failure (applies to loopthrough connection mode only).
12.2 LED Indication
Two LED diodes are used to indicate operating status of the RDS encoder:
LED 1
LED 2
Status
Start-up
off
on
Initialization
on
off
Firmware update in progress
(1 sec.)
Normal operation, unit selected
(2 sec.)
Normal operation, unit unselected
or no header communication is active
- - - - -
(1 sec.)
An error occurred, unit selected
Operation
-
- - (2 sec.)
An error occurred, unit unselected
on
Receiving data from RS-232
on
External pilot synchronization is active
off
Internal clock source is selected
Stereo encoder error - pilot tone present but does
-
-
-
-
-
not meet the specification required (chapter 2).
Switch the RDS encoder to internal clock source.
12.3 External Program Switch
External program switch input allows you to select one of two program banks available by an external device. This
device can be a simple switch or a device with digital output. The PROGRAM parameter must be set to 0 to enable
this feature. The program input is level controlled, the switch shut-off or logical 1 selects the Program 1, the switch
closure or logical 0 selects the Program 2.
Alternatively the switch input can be used for selecting a text message or for control of other RDS service or setting.
For more details see chapter 11.7 - Conditional Command.
12.4 External TA/EON1TA Switch
External TA/EON1TA switch input allows you to control the Traffic Announcement parameter by an external device.
This device can be a simple switch or a device with digital output. The TA input is level or edge activated, as
specified by the TATMOUT command.
If level controlled, the switch closure or logical 0 activates the TA (sets to 1). The switch shut-off or logical 1
deactivates the TA (sets to 0).
If edge activated, any logical level change activates the TA. Then the TA is deactivated after the time specified
by the TATMOUT command.
The TATMOUT command doesn’t affect the EON1TA switching. If EON1TA is controlled using the external switch,
the control is always based on the level.
The switch function table:
TP (local) EON1 Enabled
Switch function
1
don’t care
TA
0
1
EON1TA
0 0 Switch disabled