FMUSER RDS-A FM Broadcast RDS Encoder For Traffic Broadcasting DSP Concept

Description

FMUSER RDS-A FM Broadcast RDS Encoder For Traffic Broadcasting DSP Concept and Effective Design
Overview
FMUSER RDS-A Encoder is well suited for most regional, local, RSL, LPFM and other medium- and small-coverage radio stations which use Ethernet for dynamic RDS data distribution. Built-in Ethernet controller supports multiple TCP/UDP ports, internet functions and remote monitoring .
FMUSER RDS-A Encoder have Fully DSP concept and effective design ensures high reliability, excellent signal characteristics and gives the user many advanced features while maintaining low acquisition costs.
Features
l  Fully dynamic FM broadcast RDS encoder with up to four independent communication ports
l  USB connectivity for local settings and maintenance purposes
l  Ethernet connectivity for linking with broadcast automation system
l  Control interface based on ASCII commands and UECP protocol
l  Supports internet functions and remote monitoring
l  Text features include dynamic PS, parsing, scrolling, tagging, fixed messages, scheduling and HTTP reading
l  Excellent compatibility with broadcast automation systems
l  Control software includes powerful Windows GUI application
l  Supports control from external PHP/ASP scripts
l  Easy and fast set-up
l  Excellent spectral purity, direct digital RDS signal synthesis; compliant with EN 50067 / EN 62106
l  Two switchable program sets (with optional DSN and PSN setting)
l  External TA and Program set switch
l  Bypass relay, high reliability
l  Switchable MPX loopthrough mode (Loop/Side)
l  Internal real-time clock incl. backup battery
l  No special 19 kHz input needed – pilot tone internally recovered from MPX signal using digital PLL
Number
Name
Explain
1
12V DC
Power supply connector. See section 3.3 for details.
2
Ethernet
Ethernet RJ-45 connector.
Use a standard (direct) cat 5 Ethernet cable for connection to the Ethernet switch, router or wall-socket.
The Ethernet control includes internal website (referenced as “Port 2”) and two independent user configurable general purpose ports (referenced as “Port 3” and “Port 4”) designated for remote control via TCP or UDP protocol.
The encoder operates also with no cable connected.
3
USB
USB standard B type connector. This port is referenced as “Port 1”.
Use the USB for initial setup of the encoder or for its local control.
The encoder operates also with no cable connected.
4
Output BNC
RDS signal output to transmitter, modulated at 57 kHz subcarrier.
If the Loop/Side switch is set to the LOOP position, the Output is a sum of the RDS signal and the signal fed to the Input BNC connector.
5
Input BNC
Optional input for synchronization to the pilot tone or for mixing the RDS signal with existing modulation signal.
6
Loop/SIDE
Allows the
input
signal to be added to the
output
signal.
7
GPIO
Optional logical inputs for direct control of some RDS services (TA, PROGRAM).
The connector is a standard 6-pin PS/2 type.
Technical Specifications
Parameter
Condition
Value
General
Supply voltage
12 V DC stabilized
Supply current
280 mA
Signal connectors
unbalanced BNC
Data connectors
1x USB (port 1), 1x Ethernet (port 2, 3, 4)
Network protocols supported
HTTP, SNTP, TCP, UDP, DHCP, DNS, SNMP
USB speed
software switchable 1200, 2400, 4800, 9600, 19200 bps
USB Mode
1 stop bit, 8 data bits, no parity, (no flow control),
ASCII or UECP (SPB 490)
TA switching
software or external switch
TA/EON1TA input
TTL with 10 kΩ pull-up, level or falling edge activated
Program sets
2
Program set switching
ASCII command, UECP command or external switch
Program switch input
TTL with 10 kΩ pull-up, level controlled
RDS Services supported
PI, PS, PTY, TP, AF, TA, DI, M/S, PIN, RT, RT+
TMC, EON, PTYN, ECC, LIC, TDC, IH, CT, ODA
RDS signal
Subcarrier frequency
57 kHz
Bandwidth
± 2.4 kHz (50 dBc)
Output level adjust
0.0 to 4.0 V p-p in 256 steps
Phase shift adjust
stereo transmission
Full range, in 9.5 deg. steps
Audio/MPX/Pilot input
Recommended load impedance
mono
< 10 kΩ
stereo MPX
< 2 kΩ
Recommended MPX voltage
1.3 – 8.0 V p-p
Passthrough voltage gain
2 Hz – 100 kHz
1 (0 dB)
Pilot tone level
min. 120 mV p-p
- recommended FM deviation
6.8 kHz
Pilot PLL capture range
8 Hz
Stereo encoder pilot frequency required
stereo transmission
19000 Hz ± 2 Hz
Output
Output impedance
100 Ω
Recommended load impedance
> 70 Ω, < 1 nF, no DC offset
Max. output voltage (RDS + MPX)
9.0 V p-p
Recommended RDS level
3 – 11 % of MPX
Packing List
1pcs FMUSER RDS-A Encoder
1pcs USB Cable
2pcs BNC Cable
1pcs 12V 2A Power supply