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Radyne ComStream QAM256 Installation And Operation Manual

Digital video modulator and upconverter
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Summary of Contents for Radyne ComStream QAM256

  • Page 1 sales@artisantg.com artisantg.com (217) 352-9330 | Visit our website - Click HERE...
  • Page 2 Radyne ComStream, Inc. Radyne ComStream, Inc. • 3138 E. Elwood St. • Phoenix, AZ 85034 • (602) 437-9620 • Fax: (602) 437-4811...
  • Page 3 TM077 – Rev. 3.1...
  • Page 4 ComStream, Inc. Radyne ComStream, Inc. makes no warranty whatsoever concerning products or accessories not of its manufacture. Repair, or at Radyne ComStream, Inc.’s option, replacement of the Radyne ComStream, Inc. products or defective parts therein shall be the sole and exclusive remedy for all valid warranty claims.
  • Page 5 Before a warranty repair can be accomplished, a Repair Authorization must be received. It is at this time that Radyne ComStream, Inc. will authorize the product or part to be returned to the Radyne ComStream, Inc. facility or if field repair will be accomplished. The Repair Authorization may be requested in writing or by calling: Radyne ComStream, Inc.
  • Page 6 ©2002, Radyne ComStream, Inc. This manual is proprietary to Radyne ComStream, Inc. and is intended for the exclusive use of Radyne ComStream, Inc.’s customers. No part of this document may in whole or in part, be copied, reproduced, distributed, translated or reduced to any electronic or magnetic storage medium without the express written consent of a duly authorized officer of Radyne ComStream, Inc.
  • Page 7 Radyne ComStream, Inc. assumes no responsibility for use of any circuitry other than the circuitry employed in Radyne ComStream, Inc. systems and equipment. Furthermore, since Radyne ComStream, Inc. is constantly improving its products, reserves the right to make changes in the specifications of products, or in this manual at any time without notice and without obligation to notify any person of such changes.

  • Page 8: Table Of Contents

    QAM256 Digital Video Modulator and Upconverter Table of Contents Table of Contents Section 1 - Introduction 1.0 Introduction _______________________________________________________ 1-1 Section 2 - Installation 2.0 Installation Requirements _____________________________________________ 1 2.1 Unpacking _________________________________________________________ 1 2.2 Removal and Assembly_______________________________________________ 2 2.3 Mounting Considerations ______________________________________________ 2 Section 3 - Operation 3.0 Theory of Operation __________________________________________________ 1...
  • Page 9 Table of Contents QAM256 Digital Video Modulator and Upconverter Section 5 – Electrical Interfaces 5.0 QAM256 Rear Panel Interfaces/Connections ______________________________ 1 5.1 AC Power __________________________________________________________ 1 5.2 FAULT Connection __________________________________________________ 1 5.3 TX MON Port _______________________________________________________ 2 5.4 TX IF Port __________________________________________________________ 2 5.5 G.703 Interface Connections ___________________________________________ 2...
  • Page 10 QAM256 Digital Video Modulator and Upconverter Table of Contents Section 7 – Technical Specifications 7.1.1 IF Interface _______________________________________________________ 1 7.1.2 Baseband Interface_________________________________________________ 1 7.1.3 Remote Interface __________________________________________________ 1 7.1.4 Physical__________________________________________________________ 1 7.2.1 RF Interface ______________________________________________________ 2 7.2.2 Baseband Interface_________________________________________________ 2 7.2.3 Remote Interface __________________________________________________ 2...
  • Page 11 Table of Contents QAM256 Digital Video Modulator and Upconverter TM077 – Rev. 3.1...

  • Page 12: Section 1 - Introduction

    Upconverter meet all DVB requirements for transmission of digital video over broadband coaxial cable and microwave radio. The QAM256 features 4 QAM to 256 QAM modulation, 1 - 52 Mbps data rate, 1 - 8 MHz channel spacing, and Reed-Solomon Forward Error Correction. The upconverter features an output frequency range of 50 –...
  • Page 13 Introduction QAM256 Digital Video Modulator and Upconverter TM077 - Rev. 3.1...

  • Page 14: Section 2 - Installation

    2.0 Installation Requirements The QAM256 Modem is designed to be installed within any standard 19-inch wide equipment cabinet or rack, and requires one rack unit (RU) of mounting space (1.75 inches) vertically and 17¾ inches of depth. Including cabling, a minimum of 20 inches of rack depth is required. The rear panel of the modem is designed to have power enter from the left and IF Cabling enter from the right when viewed from the rear of the unit.

  • Page 15: Removal And Assembly

    The QAM256 unit is shipped fully assembled and does not require removal of the covers for any purpose in installation. Should the power cable AC connector be of the wrong type for the installation, either the cable or the power connector end should be replaced.

  • Page 16: Section 3 - Operation

    QAM256 Digital Video Modulator and Upconverter Operation Section 3 - Operation 3.0 Theory of Operation A digital terrestrial interface supplies the modulator with a data stream. The data stream is synchronized if the incoming stream is framed. The data is scrambled, and FEC is added. The data is then convolutionally encoded, punctured, then constellation mapped.
  • Page 17 Operation QAM256 Digital Video Modulator and Upconverter TM077 - Rev. 3.1...

  • Page 18: Section 4 - User Interfaces

    The two user interfaces available from the Front Panel are Front Panel Control, and Terminal Mode Control (not currently available). Either of these methods may be used separately or together to monitor and control the QAM256. 4.1 Front Panel User Interface The Front Panel of the QAM256 allows for complete control and monitor of all QAM256 parameters and functions via the Keypad, LCD Display and Status LEDs.
  • Page 19 User Interfaces QAM256 Digital Video Modulator and Upconverter 4.1.1 LCD Front Panel Display The front panel display is a 2 line by 16-character LCD display. The display is lighted and the brightness can be set to increase when the front panel is currently in use. The LCD display automatically dims after a period of inactivity.

  • Page 20: Front Panel Led Indicators

    User Interfaces 4.1.4 Front Panel LED Indicators Eight LEDs on the QAM256 Front Panel (Refer to Table 4-3) indicate the status of the QAM256’s operation. The LED colors maintain a consistent meaning. Green signifies that the indication is appropriate for normal operation, Yellow means that there is a condition not proper for normal operation, and Red indicates a fault condition that will result in lost communications.

  • Page 21: Front Panel Control Screen Menus

    User Interfaces QAM256 Digital Video Modulator and Upconverter 4.3 Front Panel Control Screen Menus The QAM256 Front Panel Control Screens are broken down into sections under several Main Menus. 4.3.1 Main Menus Modulator Interface Monitor Alarms System Test 4.3.2 Modulator Menu Options and Parameters Frequency: {50 MHz –...

  • Page 22: Monitor Menu Options And Parameters

    QAM256 Digital Video Modulator and Upconverter User Interfaces 4.3.4 Monitor Menu Options and Parameters Event Buff: Displays a history of events recorded in the event buffer. A maximum of 40 events may be stored in the buffer. Upon receipt of the 41...

  • Page 23: System Menu Options And Parameters

    User Interfaces QAM256 Digital Video Modulator and Upconverter 4.3.6 System Menu Options and Parameters Control Mode: {Front Panel, Computer} Date: Displays the current date. Time: Displays the current time. Bklt Level: {0 – 99 seconds, 0 = No Timeout} Key Click:...
  • Page 24 SMI. Radyne ComStream, Inc.’s Private Enterprise Number is 2591. Other products are added to Radyne ComStream, Inc.’s subtree as they become remotely manageable through SNMP.
  • Page 25 User Interfaces QAM256 Digital Video Modulator and Upconverter Figure 1. Object Identifiers in the Management Information Base (Sheet 1 of 2) TM077 - Rev. 3.1...
  • Page 26 QAM256 Digital Video Modulator and Upconverter User Interfaces Figure 1. Object Identifiers in the Management Information Base (Sheet 2 of 2) TM077 - Rev. 3.1...
  • Page 27 FROM RFC-1212; -- groups in Radyne specific MIB radyne OBJECT IDENTIFIER ::= { enterprises 2591 } qam256 OBJECT IDENTIFIER ::= { radyne 6 } radQAM256ModNVStatus OBJECT IDENTIFIER ::= { qam256 1 } radQAM256ModStatus OBJECT IDENTIFIER ::= { qam256 2 }...
  • Page 28 QAM256 Digital Video Modulator and Upconverter User Interfaces DESCRIPTION "Selects Unframed, MPEG Sync Byte and MPEG Sync Byte plus Reed-Solomon" ::= { radQAM256ModNVStatus 6 } radQAM256TxModulation OBJECT- TYPE SYNTAX INTEGER { qam4(1), qam16(2), qam32(3), qam64(4), qam128(5), qam256(6) } ACCESS read-write...
  • Page 29 User Interfaces QAM256 Digital Video Modulator and Upconverter radQAM256TxDataPolarity OBJECT- TYPE SYNTAX INTEGER { normal(1), inverted(2) } ACCESS read-write STATUS current DESCRIPTION "Selects data polarity" ::= { radQAM256ModNVStatus 13 } radQAM256TxCarrierMode OBJECT- TYPE SYNTAX INTEGER { normal(1), cw(2) } ACCESS read-write...
  • Page 30 QAM256 Digital Video Modulator and Upconverter User Interfaces ::= { radQAM256ModNVStatus 18 } radQAM256CommonAlarm1Mask OBJECT- TYPE SYNTAX INTEGER (0..255) ACCESS read-write STATUS current DESCRIPTION "Common alarm 1 mask: Bit 0 = Interface hardware fault mask Bit 1 = M&C hardware fault mask Bits 2..7 = spares...
  • Page 31 DESCRIPTION "This corresponds to the index entry into a selected channel table. Maximum entry for EIA tables is 116 where as that for TRAD tables is 67. Valid for QAM256 Cable Modulator Only." ::= { radQAM256ModNVStatus 27 } -- QAM256 modulator status information.
  • Page 32 QAM256 Digital Video Modulator and Upconverter User Interfaces ::= { radQAM256ModStatus 4 } radQAM256TxCommonAlarm1Status OBJECT- TYPE SYNTAX INTEGER (0..255) ACCESS read- only STATUS current DESCRIPTION "A bit field. On startup, the agent initializes this to the value '00000000'B Bit 0=Interface hardware fault 1=Fault Bit 1=M&C Hardware Fault...
  • Page 33 User Interfaces QAM256 Digital Video Modulator and Upconverter "Bits 0 ..7 Spares" ::= { radQAM256ModStatus 10 } radQAM256TxLatchedCommonAlarm1Status OBJECT- TY PE SYNTAX INTEGER (0..255) ACCESS read- only STATUS current DESCRIPTION "Bit 0=Interface hardware fault 1=Fault Bit 1=M&C Hardware Fault Bit 2..7 Spares"...
  • Page 34 User Interfaces radQAM256TxModulatorType OBJECT- TYPE SYNTAX INTEGER { undefined(1), qam256var550(2), qam25636Mhz(3), qam25644Mhz(4), qam256cable(5) } ACCESS read- only STATUS current DESCRIPTION "Shows the type of qam256 modulator, QAM256Var550, QAM25636Mhz, QAM25644Mhz or QAM256cable" ::= { radQAM256ModStatus 17 } TM077 - Rev. 3.1 4-17...
  • Page 35 User Interfaces QAM256 Digital Video Modulator and Upconverter 4-18 TM077 - Rev. 3.1...

  • Page 36: Section 5 - Electrical Interfaces

    Connection. 5.2 FAULT Connection The QAM256 has two Form-C dry contact alarm relays onboard and a Fault connector located on the rear panel. The two relays are designated “1” and “2”. The Modem Alarm B Port (J6) can be used for modem fault status. The physical interface is a female 9-Pin D-Sub Connector. This port is an open collector input.

  • Page 37: Tx Mon Port

    Electrical Interfaces QAM256 Digital Video Modulator and Upconverter Table 5-1. FAULT Connection - 9-Pin Female D-Sub - J6 Pin No. Connection Relay 1 NC Relay 1 C Relay 1 NO (Minor Alarm) Ground Mod Fault (Open Collector) Relay 2 NC...

  • Page 38: Out Connector

    QAM256 Digital Video Modulator and Upconverter Electrical Interfaces 5.5.2 G.703 OUT Connector The G.703 OUT Connector (J5) is a Female BNC Connector. 5.6 ASI Interface Connections 5.6.1 REMOTE Connector The RS -485 Remote Connector (J3) is a 9-Pin Female D-Sub Connector. The pinouts are listed in Table 5-2.

  • Page 39: Rx Parallel Connector

    Electrical Interfaces QAM256 Digital Video Modulator and Upconverter Input Input Input Input Input Input Input Input Input 5.7.2 RX PARALLEL Connector The RS -422 Receive Parallel Connector (J2) is a 25-Pin Female D-Sub Connector. The pinouts are listed in Table 5-3.

  • Page 40: Asi And Advanced Asi Interfaces

    Electrical Interfaces 5.9 ASI and Advanced ASI Interfaces The QAM256 has two ASI options that apply to different uses. The Normal ASI option interfaces to data sources that conform to the DVB ASI Specification. The DVB ASI Specification requires data sources to transmit the ASI/DVB transport stream at a constant data rate and packet gap with no variation in time from one sync byte to the next.
  • Page 41 Electrical Interfaces QAM256 Digital Video Modulator and Upconverter Table 5-6. J1 Optional DVB RS-422 Parallel Connection - 25-Pin Female D-Sub – J3 Pin No. Signal Name Direction Clock + Input System GND Ground D7 + Input D6 + Input D5 +...

  • Page 42: Section 6 - Maintenance

    The QAM256 modulator requires no periodic field maintenance proc edures. Should a unit be suspected of a defect in field operations after all interface signals are verified, the correct procedure is to replace the unit with another known working QAM256. If this does not cure the problem, wiring or power should be suspect.
  • Page 43 Maintenance QAM256 Digital Video Modulator and Upconverter TM077 - Rev. 3.1...
  • Page 44 QAM256 Digital Video Modulator and Upconverter Technical Specifications Section 7 – Technical Specifications 7.0 Introduction This section defines the technical performance parameters and specifications for the QAM256 Digital Video Modulator and Upconverter. 7.1 Specifications Without Cable Upconverter Data Rate: 1 - 55 Mbps...
  • Page 45 Technical Specifications QAM256 Digital Video Modulator and Upconverter 7.2.1 RF Interface Frequency: 50 – 862 MHz, 1 Hz Steps Power Output: 35 – 60 dBmV, 1 dB Steps Power Output Accuracy: ± 0.5 dB Power Output Stability: ± 0.5 dB...
  • Page 46 QAM256 Digital Video Modulator and Upconverter Appendix A Appendix A A.0 QAM256 Data Rates Table A-1. Maximum Symbol Rate = 7.1 Msps Minimum Maximum Modulation Type 1.843137 Mbps 13.086275 Mbps 4 QAM 3.686274 Mbps 26.172549 Mbps 16 QAM 4.607843 Mbps 32.715686 Mbps...
  • Page 47 Appendix A QAM256 Digital Video Modulator and Upconverter TM077 - Rev. 3.1...

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