Loop-through operation mode
STEP 5
If Loop-through operation mode is chosen, the RDS OR MPX OUTPUT includes the composite MPX
program signal to the RDS sub carrier. In loop-through mode the internal bypass relay will pass-through
the multiplex signal in case of an encoder power failure event.
"Loop-through" Encoder Connection
1.
generator directly to the PILOT OR MPX
INPUT of SmartGen 4.1;
2. Connect the RDS OR MPX OUTPUT of
the encoder to the composite/MPX
wideband input of the FM exciter.
Connect the output of the stereo
Sidechain operating mode
STEP 4
In order to derive timing information from the 19kHz stereo pilot, the rear-panel PILOT OR MPX
INPUT connector monitors the output of the stereo generator. When sidechain operation mode is chosen
the RDS OR MPX OUTPUT contains only the RDS sub carrier, the composite MPX signal is not routed
through SmartGen Mini. This operating mode preserves the multiplex signal integrity and assures
uninterrupted program transmission, in case of encoder failure event. Originally SmartGen 4.1 is
configured for sidechain operation.
"Sidechain" Encoder Connection
1. Connect a BNC 'T' adapter to the
composite/MPX output of the stereo
generator;
2. Using a suitable cable, connect one side
of the 'T' adapter directly to the wideband
(composite/ MPX) input of the FM exciter;
3. Using a suitable cable, connect the other
side of the 'T' adapter to the PILOT OR
MPX INPUT of SmartGen 4.1;
4. Cable the RDS OR MPX OUTPUT of the
encoder to the second wideband
(subcarrier) input of the FM exciter.
NOTE:
We strongly recommend the usage
of Sidechain operating mode.
FM STEREO GENERATOR
MPX OUTPUT
SmartGen
4.1
RDS OR MPX
OUTPUT
PILOT OR MPX
INPUT
1
2
3
WIDEBAND INPUTS
FM EXCITER / TRANSMITTER
LAN
1
2
4
3
FM STEREO GENERATOR
MPX OUTPUT
SmartGen 4.1
RDS OR MPX
OUTPUT
PILOT OR MPX
INPUT
1
2
3
WIDEBAND INPUTS
FM EXCITER / TRANSMITTER
LAN
1
2
