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Wegener DTV720 User Manual

Transport stream multiplexer
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Transport Stream Multiplexer
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  • Page 1 DTV720 Transport Stream Multiplexer User’s Manual...
  • Page 2 Second Edition: October 2004 should be forwarded to: Wegener Communications, Inc. Technology Park/Johns Creek 11350 Technology Circle Duluth, GA 30097-1502 Phone: 770-814-4000 Fax: 770-623-0698 The Wegener DTV720 is approved under FCC Part 15B Class A, UL1950, and CSA. 800043-01 Rev. B wegener.com...

  • Page 3: Table Of Contents

    1.3 DTV720 Specifications ........7...
  • Page 4 DTV 720 User’s Manual 3.4 Front-panel Operation ........29 Home Screen .

  • Page 5: Chapter 1 General Information

    100. The manual is divided into the following chapters: 1 General Information - a description of your DTV720, its functions and specifications, and a glossary of terms 2 Installation - procedures and information for the correct and safe instal- lation of your DTV720.

  • Page 6: Dtv720 Overview

    Description provides a user interface through an LCD, eight LEDs, and six push buttons (see section 3.3 DTV720 Controls and Indicators on page 26). The rear panel holds the ports that allow connection to power, incoming signal, and peripheral devices.

  • Page 7: Dtv720 Specifications

    DTV 720 User’s Manual 1.3 DTV720 Specifications Table 1: Technical Specifications Characteristic Specification ENVIROMENTAL Indoor Altitude Up to 2000 meters Temperature Range 0°C to +50°C Operating -20°C to +70°C Storage Cooling Internal fan Relative Humidity (max.) 80% for temperatures up to 31°C decreasing linearly to 50% rel- ative humidity at 40°C.

  • Page 8: Safety Summary

    · DHEI transport stream output · 8VSB tuner module 1.4 Safety Summary The DTV720 is designed for safe use with few special precautions required of the user. The following items are basic precautions to use when installing and working with your DTV720: Do not open the DTV720’s chassis cover.

  • Page 9: Glossary Of Terms And Abbreviations

    Institute of Electrical and Electronics Engineers Local area network. Your DTV720 may be connected to an Ethernet LAN. Liquid crystal display. The front-panel text screen on your DTV720 is a liquid crystal display. Light-emitting diode. The front-panel indicator lights on your DTV720 are LEDs.
  • Page 10 (including a PID), and payload data. port Stream) This multiplex includes PSI data tables, Programs, and padding in the form of null packets. Warning A condition or notification of a condition that may compromise the proper performance of your DTV720 800043-01 Rev. B wegener.com...

  • Page 11: Chapter 2 Installation

    Packing these units in other containers in such a way that they are damaged will void your warranty. 2.2 Location and Mounting The DTV720 should be located indoors and may be mounted in a standard, 19-inch equipment rack within one standard RU. WARNING This is a Class A product.
  • Page 12 This unit is not very heavy, but total rack loading must be considered. Also, do not rest any unsupported equipment on your DTV720. Circuit Overloading Consideration should be given to the connection of the equipment to the supply circuit and the effect that overloading of circuits could have on overcurrent protection and supply wiring.

  • Page 13: Rack Mounting

    Screw or bolt the supports securely to the equipment rack. b) Place the DTV720 on its supports and use four anchor screws or bolts and nuts to secure the unit’s front brackets to the rack.

  • Page 14: Dtv720 Connections

    DTV 720 User’s Manual 2.3 DTV720 Connections Figure 2.1 DTV720 System Setup below shows placement of the DTV720 in a typical cable headend. Figure 2.2 DTV720 Rear Panel illustrates details of the DTV720’s rear panel. Figure 2.1 DTV720 System Setup Figure 2.2 DTV720 Rear Panel...

  • Page 15: Table 3 Dtv720 Connector Details

    DHEI Expansion Input or the DHEI Expansion Output connector. g) Finally, connect the supplied ac power cord to the DTV720’s IEC receptacle (11) and to a 90-to-132 Vac source. Table 3: DTV720 Connector Details...

  • Page 16: Ethernet

    The Terminal serial port is configured to 115.2k, N, 8, 1. The Terminal device is used for command and control of the DTV720. This I/O is a basic, VT100- like emulation. User input text strings terminated in carriage-returns prompt all I/O.

  • Page 17: Chapter 3 Operation

    There are two basic methods of using the Ethernet connection – with a directly connected PC or with a PC connected through a LAN. Directly For control from a local PC, attach the DTV720’s Ethernet port to the Ethernet Connected PC network connector on the PC using a crossover RJ-45 cable (8 pins).

  • Page 18: Table 4 Dtv720 Ip Setup

    DTV 720 User’s Manual Perform the DTV720 IP Setup as shown in Table 4 and the PC IP Setup as shown in Table 5: Table 4: DTV720 IP Setup Parameter Setting IP Address 172.016.100.001 Subnet Mask 255.255.000.000 Table 5: PC IP Setup...

  • Page 19: Control And Status Page

    The left side of this page is used for control selections and the right side gives Status Page input and output status. The serial number of the DTV720 unit and the version number of the application software installed in the unit are shown at the top of the left side.
  • Page 20 PID of that stream those commands are located. A checkbox and but- ton are provided to enable Compel Control and set the stream and PID infor- mation. Figure 3.1 DTV720 Control and Status Page Status The Status section (on the right side) provides the unit’s input and output signal status.
  • Page 21 DTV 720 User’s Manual tion) as well as the frequency, modulation type (8VSB, 64QAM, or 256QAM), frame-lock status, TSID, signal-to-noise ratio, and errored seconds. ASI Output lists the output stream’s data transport rate as well as IRT mode status, TSID, and bandwidth utilization. the output lock status. (The QAM modulator associated with the data rate is shown after the data rate, 64 QAM for 26.97 Mbps or 256 QAM for 38.81 Mbps.) Utilization indicates the per- centage of the output Transport Stream’s data rate that is occupied with actual...

  • Page 22: Stream Information Page

    PID numbers. Any PIDs present that are not referenced are shown as ghost PIDs. Output information provides the same information as the input side plus the input source of each output program. Figure 3.2 DTV720 Stream Information Page 800043-01 Rev. B wegener.com...

  • Page 23: Unit Configuration Page

    With up to twenty characters allowed for each configuration name, highly descriptive naming may be used. Figure 3.3 DTV720 Unit Configuration Page Pidsets The Pidsets Config page (see Figure 3.4) allows the selection of programs to Config Page be included in the output.
  • Page 24 If you wish to keep these selections, return to the Unit Configuration screen and save the configuration under the desired name. Figure 3.4 DTV720 Pidsets Config Page 800043-01 Rev. B wegener.com...

  • Page 25: Q&A/Help Page

    DTV 720 User’s Manual Q&A/Help A list of questions and answers about operating your DTV720 is available on Page the Q&A/Help page. Click the Q&A/Help tab to display this page. Figure 3.5 DTV720 Q&A/Help Page wegener.com 800043-01 Rev. B...

  • Page 26: Dtv720 Controls And Indicators

    Figure 3.6 DTV720 Front Panel Liquid- The DTV720’s 2-line by 20-character LCD indicates unit status and prompts Crystal for and reflects user input. Here, on startup, you will see your DTV720’s Display(LCD) "home screen" which shows information on the input connections. Push Buttons These six push buttons (shown below in Figure 3.7) are your means of com-...

  • Page 27: Front-Panel Led Indicators

    DTV 720 User’s Manual Front-panel Figure 3.8 below shows the eight light-emitting diodes (LEDs) that provide status information about your DTV720 and its processes. Table 6: LED Indi- Indicators cator Descriptions provides the meaning of the color and state of each LED.

  • Page 28: Rear-Panel Indicators

    Off No Alarm condition exists LAN ACTIVITY Flash LAN activity present. Only lights when data is transferred to the DTV720. This is not a continu- GREEN ous monitor of LAN communications. Off No transfer of LAN data to the unit...

  • Page 29: Front-Panel Operation

    DTV 720 User’s Manual 3.4 Front-panel Operation The DTV720 may be set up and controlled from the front panel as follows: NOTE: From any screen, pressing the ESC key twice will return you to the Home Screen. Home Screen The Home screen rotates through information on the standard two ASI inputs and the optional RF input modules.

  • Page 30: Alarms/Warnings Screen

    DTV 720 User’s Manual Second-level Screen Serial Number and Application Software Version Number Screen S/N: XXXXXX Version: YYY Where XXXXXX is the unit's six-digit serial number and YYY is the version number of the unit's currently installed application software. Press the ESC key to return to the Home Screen. Alarms/ Warnings Screen...

  • Page 31: Input Setup Screen

    DTV 720 User’s Manual Input Setup These screens are used to enable and set parameters of ASI and RF inputs. Screen Input Setup... Press the ENT key to bring up the second-level ASI Input 1 screen. Press the key to go to the Program Status Screen. Press the key to go to Clear Errored Seconds (if counter is non-zero).
  • Page 32 DTV 720 User’s Manual RF Input 2 Screen RF Input 2 Functions are identical to those for RF Input 1 but apply to RF Input 2. Press ENT to go to the third-level Tuner Enable Screen. Press the key to go to RF Input 1. Press the ESC key to return to the Input Setup screen.

  • Page 33: Program Status Screen

    DTV 720 User’s Manual Program Status Screen Program Status... Press the ENT key to view the second-level program status screens. Press the key to go to Front Panel Timeout. Press the key to go to Input Setup. Press the ESC key to go to the Home Screen. Second-level screens 2nd-level Program Status Screen ProgIn XXXXX AAAAAAA...

  • Page 34: Ip Setup Screen

    DTV 720 User’s Manual IP Setup Screen IP Setup... Press the ENT key to go to IP Address Selection. Press the key to go to Reset Unit Screen. Press the key to go to Front Panel Timeout. Press the ESC key to go to the Home Screen. Second-level screens IP Address Selection Screen IP Address:...

  • Page 35: Reset Unit Screen

    Press the ENT key to reset the unit and start the boot loader. Press the ESC key to go to the Reset Unit Screen. Unit Simply remove power to the unit to shut down your DTV720. No special pro- Shutdown cedure is required.

  • Page 36: Initialization Sequence

    Refer to ISO 13818-1 for supporting details on the structure of MPEG Trans- port Streams. Input to The basic DTV720 has two ASI inputs (and optionally two RF inputs or two Output more ASI inputs). Program data from these inputs are multiplexed and output Processing on two duplicate ASI outputs.

  • Page 37: Irt Mode

    3.2 Ethernet/Web Browser Control. IRT Mode WARNING Do not select IRT mode unless using the DTV720 with Motorola or General Instruments equipment. Using IRT in other situations may have unexpected results. NOTE: When using IRT mode, PSIP is normally disabled.

  • Page 38: Warning Conditions

    3.8 Software Downloads The DTV720 may be field upgraded with new application software via the Ethernet port. During the upgrade process, the DTV720 will not be processing signals, so it is best to take the unit offline while downloading new software.
  • Page 39 2. When the window opens, make the following settings: (Set to the directory where you placed the appli- Current Directory: cation code DTV720-xxx.cf in step a. above. See Figure 3.9 below.) Your PC’s IP address (the program will automati- Server interfaces: cally set this) (See Figure 3.10.)
  • Page 40 (IP address of DTV unit being updated) IP pool starting address: Size of pool: 100 (This is the software upgrade file. The Boot File: dtv720-xxx.cf "xxx" must match the upgrade revision.) WINS/DNS Server: 0.0.0.0 Default router: 0.0.0.0 (Use the first two sets of digits from the DTV unit’s IP Mask: address followed by .0.0.
  • Page 41 Connect the computer directly to your DTV720 using a LAN crossover cable (Do not connect over a network). g) Power up the DTV720 and you should see on the front-panel LCD the message, Hit any key to stop boot. Press the down arrow ( ) immediately to interrupt the Boot Loader and enter the upgrade mode.
  • Page 42 After the unit resets, verify that the correct code has been loaded by pressing ENTER and checking that the version number matches the "xxx" in the DTV720-xxx.cf file. k) After all units have been upgraded, it is recommended that you delete from your hard drive all files and folders used in this upgrade.

  • Page 43: Chapter 4 Maintenance And Troubleshooting

    If you are experiencing any difficulties, first check the LCD and LED indica- tors on the DTV720 to determine if any warnings or alarms are active. See Table 6: LED Indicator Descriptions on page 27 for descriptions of LED states.

  • Page 44: No Functions At All

    Check that ac power cord is firmly connected at both ends. b) Check that your ac power source is supplying ac power. Normal The LEDs are shown here reflecting the DTV720 in normal operation with no Operation Alarms or Warnings (WARNING and ALARM LEDs are unlit, ASI OUT...

  • Page 45: Alarm: Pat Or Pmt Missing

    A corrupt signal is output from the subscribed DTV720. Oversubscription results in errors in the video output. On the front panel, this is indicated by a lit ALARM LED and an unlit ASI OUT LOCK LED (shown below).
  • Page 46 DTV 720 User’s Manual This page intentionally blank 800043-01 Rev. B wegener.com...

  • Page 47: Chapter 5 Customer Service

    The following warranty applies to all Wegener Communications products including the DTV720 Transport Stream Multiplexer: All Wegener Communications products are warranted against defective materials and workmanship for a period of one year after shipment to customer. Wegener Communications' obligation under this warranty is limited to repairing or, at Wegener Communications' option, replacing parts, subassemblies, or entire assemblies.
  • Page 48 DTV 720 User’s Manual This page intentionally blank 800043-01 Rev. B wegener.com...
  • Page 49 Index environment, operating 7 description AC Power 7 equipment rack 13 29-35 screens address Escape (ESC) button 26 LED indicators 27 customer service Ethernet LEDs manual comments or questions 16, 18 connection and use alarm air flow 12 port ASI LOCK (1 & 2) alarm relays 8 expansion module slot 8 ASI OUT LOCK...
  • Page 50 DTV720 User’s Manual shutdown 35 terminal I/O 16 rack mounting 13 size of DTV720 7 TMRA 12 rear panel software structure 35 troubleshooting 43 figure and connections specifications 7 LEDs Stream Information page 22 relays Unit Configuration page 23 stream processing 36...

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