6
3
Hardware Installation
3.1
Connecting the RDS Encoder
Basic rules applying for any RDS encoder’s connection:
The RDS signal must be fed into modulation input (added to MPX signal if stereo encoder is used).
If stereo encoder is used, one of its outputs (MPX or pilot tone) must be fed into the RDS encoder input to meet the synchronization
requirement.
Following figures show various situations and corresponding methods of connection. Use shielded cables (e.g. RG58) terminated by BNC male
connectors. The cables should be kept short in length. Where necessary, use a BNC ‘T-piece’ for splitting the signal.
S te re o e n c o d e r
F M T ra n s m itte r
R D S E n c o d e r
M P X in p u t
O u tp u t
In p u t
R D S /S C A /M P X in p u t
P ilo t/M P X o u tp u t
M P X o u tp u t
Separate stereo encoder - default connection.
S te re o e n c o d e r
F M T ra n s m itte r
R D S E n c o d e r
M P X in p u t
M P X o u tp u t
O u tp u t
In p u t
R D S /S C A /M P X in p u t
Stereo encoder with only one MPX output provided.
S tereo en co d er
F M T ran sm itter
R D S E n c o d e r
M P X o u tp u t
M P X in p u t
O u tp u t
In p u t
R D S /S C A in p u t
FM transmitter with only one MPX input provided.