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Inovonics 712 Programming And Operation Instruction Manual

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PROGRAMMING AND OPERATION
INSTRUCTION MANUAL
MODEL 712
R D S
RADIODATA ENCODER
R
D
S
ADIO
ATA
YSTEM
interstage
Phistersvej 31, 2900 Hellerup, Danmark
Telefon 3946 0000, fax 3946 0040
www.interstage.dk
- pro audio with a smile

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Summary of Contents for Inovonics 712

  • Page 1 PROGRAMMING AND OPERATION INSTRUCTION MANUAL MODEL 712 R D S RADIODATA ENCODER ADIO YSTEM interstage Phistersvej 31, 2900 Hellerup, Danmark Telefon 3946 0000, fax 3946 0040 www.interstage.dk - pro audio with a smile...

  • Page 2: Table Of Contents

    Section II - THE RADIO DATA SYSTEM RDS: EUROPE vs. AMERICA ................... THE RDS SYSTEM ....................ADDRESSING THE MODEL 712 ENCODER ............RDS APPLICATIONS SUPPORTED BY THE MODEL 712 ........Section III - ENCODER INSTALLATION UNPACKING AND INSPECTION ................MOUNTING ......................
  • Page 3 Dynamic PS Block Transmission True Scrolling Selecting the Dynamic Mode Enabling Dynamic PS and Setting the Refresh Rate Entering Dynamic PS Text Section IV - APPENDIX TABULATED LISTING OF ENCODER COMMANDS AND PROMPTS ....INOVONICS WARRANTY ............(INSIDE BACK COVER)

  • Page 4: Section I - Introduction

    General quickly and easily implementing RDS at any FM radio station. In addition to static IDs, traffic and other flags, The 712 supports dynamic data for sending song titles, advertising messages and specialized in-house applications to the listener s radio.

  • Page 5: Model 712 Technical Specifications

    MODEL 712 TECHNICAL SPECIFICATIONS Standards Supported: Pilot or MPX Input: European CENELEC and United An unbalanced, bridging BNC input States NRSC. that accepts either the composite/ multiplex (MPX) signal or 19kHz RDS Applications Supported: TTL-level pilot sync from the stereo PI, PS, PTY, TP, TA, RT, AF, DI, generator.

  • Page 6: Block Diagram

    Figure 1, below, is a simplified Block Diagram of the Model 712. Because of the all-digital, minimalist-discrete-component nature of encoder circuitry, we have not provided schematic diagrams of the Model 712 in this Manual. As they say on the back of TV sets: NO USER-SERVICEABLE COMPONENTS INSIDE.

  • Page 7: Section Ii - The Radio Data System

    Section II THE RADIO DATA SYSTEM RDS: EUROPE vs. AMERICA The European Broadcasting Union (EBU) and its member countries originated the concept of Radio Data transmission. The European RDS specification, CENELEC Standard EN50067, was first published in 1984. It was revised in 1986, 1990, 1991 and 1992. European RDS has grown in use following initial adoption of the Standard.

  • Page 8: Addressing The Model 712 Encoder

    Particularly in Europe, RDS encoders may be linked with one another for network support applications. The UECP, or Universal Encoder Communication Protocol was developed by CENELEC to support this form of operation. The 712 does not conform to the UECP. RDS APPLICATIONS SUPPORTED BY THE MODEL 712 The following is an alphabetical listing of RDS applications that are fully supported by the Model 712.
  • Page 9 A provision has been included in the Model Free Format Groups: 712 to transmit proprietary data directly within a legitimate RDS group. This is a special use of the encoder for non-standard applications. Additional notes can be found on Page 29.
  • Page 10 This is a 64-character block of plain text that the Radiotext: listener can select for visual display on the faceplate of the radio. This function is generally not available on automobile receivers for safety considerations, which has precipitated the frowned-upon practice of scrolling the PS field instead.

  • Page 11: Section Iii - Encoder Installation

    SERVICE OR MODIFI- CATION INSTRUCTIONS should the factory issue them. MOUNTING The Model 712 mounts in a standard 19-inch equipment rack and Rack requires only 1¾ inches (1U) of vertical rack space. The use of Requirement plastic washers is recommended to protect the painted finish around the mounting holes.

  • Page 12: Ac (Mains) Power

    BLUE = AC NEUTRAL GRN/YEL = EARTH GROUND RADIO FREQUENCY INTERFERENCE ( R F I ) Although it is natural for the 712 to be installed alongside high- Location power transmitters, please practice reasonable care and common sense in locating the unit away from abnormally high RF fields.

  • Page 13: Selection Of Operating Modes

    Referring to the jumper installation drawing, Figure 2, below, locate the 3-terminal jumper strip, located just behind the rear-panel RDS OR MPX OUTPUT connector on the Model 712 circuit board. The shorting clip is positioned to the left for sidechain operation, as shown in the upper example of Figure 2.

  • Page 14: Connecting The Model 712

    (composite/ MPX) input of the FM exciter and the other side to the PILOT OR MPX INPUT of the Model 712. (This is only a bridging sync connection when the circuit board has been jumpered for sidechain operation and does not affect the composite/MPX signal.)

  • Page 15: Manually Activating The Ta Flag

    In the loop-through mode, the output of the stereo generator is Loop-Through cabled directly to the PILOT OR MPX INPUT of the Model 712 as Mode shown in Figure 4, below. Connect the RDS OR MPX OUTPUT of the encoder to a composite/MPX wideband input of the FM exciter.
  • Page 16 Figure 5 shows proper pin connections for the cable used to connect the Model 712 to a conventional external modem. The three conductors shown are the only ones required;...

  • Page 17: Section Iv - Programming And Operation

    Section IV PROGRAMMING AND OPERATION FRONT PANEL APPOINTMENTS Six front-panel ENCODER STATUS indicators monitor Model 712 vital signs. PWR. This green LED glows whenever primary power is present. If this indicator is off, the encoder will have switched into the failsafe Bypass mode. In loop-through operation of the encoder, Bypass connects the PILOT OR MPX INPUT directly to the RDS OR MPX OUTPUT.

  • Page 18: Subcarrier Injection Level

    INJECTION RDS injection level (subcarrier modulation) is set with this multiturn trim control. A detailed procedure for LEVEL ADJUST setting injection level follows. SUBCARRIER INJECTION LEVEL The front-panel INJECTION LEVEL ADJUST potentiometer sets the level of the RDS subcarrier. This is a 15-turn potentiometer to allow the required adjustment resolution.

  • Page 19: Terminal Configuration

    Figure 7 Subcarrier In Quadrature The Model 712 is skillfully and carefully aligned at the factory to ensure that the subcarrier is in quadrature with the stereo pilot, whether the encoder is used in the sidechain or in the loop-through operating mode.
  • Page 20 NOTE: Disconnect the encoder or leave it turned off until the computer or terminal has been configured. HyperTerminal is started under Windows with the command routine: StartÒProgramsÒAccessoriesÒCommunicationsÒ . Double-click: . This brings up the main HyperTerminal HyperTrm.exe HyperTerminal screen with a window for Connection Description naming your encoder communications program (below, left).
  • Page 21 This leaves the main HyperTerminal window open for data entry. If you experience trouble communicating with the Model 712, there s a quick and easy check to verify that the computer and the terminal program are functioning normally. With pins 2 and 3 of the DB-9 connector shorted with a screwdriver, whatever is typed on the keyboard should appear on the screen.

  • Page 22: Programming Syntax

    This round trip gives continuous confirmation of 2-way communications. The return data path is not essential, however. The Model 712 will accept programming commands on a receive-only basis. For example, a studio-transmitter radio link (STL) may include 1-way data transmission that could be used to address the encoder..

  • Page 23: Encoder Communications Settings

    The Model 712 has been set to echo set as the factory default. The command to turn echo off is ECHO=08 . To turn echo back on again, type ECHO=18 . The Model 712 ignores ASCII inputs that do not conform to proper Validity Symbols formatting rules.

  • Page 24: Encoder Housekeeping Commands

    Inovonics Website. Visit www.inovon.com and navigate to the Model 712 listing. The PI Calculator is a small Windows program that provides the proper hexadecimal code for 3- and 4-letter calls in...
  • Page 25 Three-letter calls have been preassigned. These are published in the RBDS Standard, but also appear (as if by magic!) when using the downloadable Inovonics PI Calculator. For the manual method, each letter of the alphabet is assigned a number value according to the following list: Now follow these simple (?) steps to calculate the PI.
  • Page 26 The hexadecimal conversion shown in the example is 4A2D. This is an alphanumeric value containing both letters and numbers. Some PI codes may contain only numbers, but all will have four characters. These four characters are entered into the PI field by typing: PI=hhhh8 , where hhhh represents the four-character hexadecimal code calculated from the call letters.
  • Page 27 (see Page 14). Leave the software command set at TA=08 and use the switch! A safety feature has been built into the Model 712 to guard against TA Timeout an extended software-activated TA flag. Say, for example, that the TA flag was activated by the software command: TA=18 , and the data link was suddenly lost.
  • Page 28 Page 14. As many as 9 alternative frequencies may be entered in to the Model 712. These are optional frequencies that carry the very same program as the main channel as in a network or translator situation.
  • Page 29 89.4 94.5 99.6 104.7 89.5 94.6 99.7 104.8 89.6 94.7 99.8 104.9 89.7 94.8 99.9 105.0 89.8 94.9 100.0 105.1 89.9 95.0 100.1 105.2 90.0 95.1 100.2 105.3 90.1 95.2 100.3 105.4 90.2 95.3 100.4 105.5 90.3 95.4 100.5 105.6 90.4 95.5 100.6...
  • Page 30 makes up the bulk of your programming. Radiotext is the static message that appears on the radio faceplate when called up by the listener. This is not to be confused with the PS field, which can be either static or dynamic. Some stations make Radiotext a dynamic function, changing the message at intervals to promote an upcoming broadcast, to announce results of a contest, or to send advertising messages.

  • Page 31: Scrolling Displays And Dynamic Encoder Operation

    712 encoder. Consult the applicable RBDS or RDS Standard for more information on how these data can be used. Once all data have been entered, execute a SAVE8 command to Saving Entries write your entries to non-volatile memory. Data held in non-volatile memory is loaded into working memory following a power-up or a RESET8 command.
  • Page 32 But if a lot of information is flying along at a good clip, the data-deprived driver could easily be distracted. The Model 712 can be programmed to send dynamic PS messages by True Scrolling the block method if text is properly formatted ahead of time. In the...
  • Page 33 throughput is far less with true scrolling, but the display requires only the occasional glance to capture the entire message. True scrolling does not accommodate the channel surfer well, however; a scrolled message may not repeat if intercepted in the middle of a song.
  • Page 34 F I R S T C U T T H E D E E P E S H E R Y L C R O W Note that, in this case, text is entered without need for special formatting, perhaps just as it comes from station automation. In both cases, there is sufficient space available to add further information such as ON KWAV or A&M RECORDS.

  • Page 35: Section Iv - Appendix

    Resets the encoder as if AC power were cycled off and on. INIT Initializes the encoder to all factory defaults. RESPONSE MEANING Command received by encoder properly formatted and understood. Command properly formatted but data not understood. (NONE) Data sent is ignored by the Model 712.

  • Page 36: Inovonics Warranty

    CONDITIONS OF WARRANTY: The following terms apply unless amended in writing by Inovonics, Inc. A. Warranty Registration Card supplied with product must be com- pleted and returned to Inovonics within 10 days of delivery. B. Warranty applies only to products sold as new. It is extended only to the original end-user and may not be transferred or as- signed without prior written approval by Inovonics.

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