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Radyne QAM256 Installation And Operation Manual

Digital video modulator and upconverter
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QAM256
Digital Video Modulator
and Upconverter
Installation and Operation Manual
TM077
Revision 4.0
Radyne Corporation • 3138 E. Elwood St. • Phoenix, AZ 85034 • (602) 437-9620 • Fax: (602) 437-4811 • www.radn.com

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  • Page 1 QAM256 Digital Video Modulator and Upconverter Installation and Operation Manual TM077 Revision 4.0 Radyne Corporation • 3138 E. Elwood St. • Phoenix, AZ 85034 • (602) 437-9620 • Fax: (602) 437-4811 • www.radn.com...
  • Page 2 Unless otherwise agreed, failure shall be deemed to have occurred no more than seven (7) working days before the first date on which Radyne Corp. receives a notice of failure. Under no circumstances shall any warranty exceed the period stated above unless expressly agreed to in writing by Radyne Corp.
  • Page 3 Radyne Corp.’s liability for damages shall not exceed the payment, if any, received by Radyne Corp. for the unit or product or service furnished or to be furnished, as the case may be, which is the subject of claim or dispute.
  • Page 4 Preface Preface This manual provides installation and operation information for the Radyne QAM256 Digital Video Modulator and Upconverter. This is a technical document intended for use by engineers, technicians, and operators responsible for the operation and maintenance of the QAM256.
  • Page 5 ©2008, Radyne Corp. This manual is proprietary to Radyne Corp. and is intended for the exclusive use of Radyne Corp.’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 Corp.

  • Page 6: Table Of Contents

    QAM256 Digital Video Modulator and Upconverter Table of Contents Table of Contents Section 1 - Introduction _______________________________________________ 1-1 1.0 Introduction ______________________________________________________ 1-1 Section 2 - Installation ________________________________________________ 2-1 2.0 Installation Requirements ___________________________________________ 2-1 2.1 Unpacking _______________________________________________________ 2-1 2.2 Removal and Assembly ____________________________________________ 2-2 2.3 Mounting Considerations ___________________________________________ 2-2...
  • Page 7 QAM256 Digital Video Modulator and Upconverter 4.5 Connecting the Terminal ____________________________________________ 4-8 4-6 Terminal Screens _________________________________________________ 4-8 4.7 QAM256 Terminal Mode Control ____________________________________ 4-12 4.8 Sample Terminal Mode Control Screen Menus _________________________ 4-12 4.9 Management Information Base Structure ______________________________ 4-13 4.10 Simple Network Management Protocol (SNMP) ________________________ 4-13...
  • Page 8 QAM256 Digital Video Modulator and Upconverter Table of Contents 7.1.4 Physical _______________________________________________________ 7-1 7.2 Specifications With Cable Upconverter_________________________________ 7-1 7.2.1 RF Interface ____________________________________________________ 7-2 7.2.2 Baseband Interface ______________________________________________ 7-2 7.2.3 Remote Interface ________________________________________________ 7-2 7.2.4 Physical _______________________________________________________ 7-2 Appendix A - Product Options _________________________________________ A-1 Appendix A.0 QAM256 Data Rates_______________________________________ A-1...
  • Page 9 Table of Contents QAM256 Digital Video Modulator and Upconverter TM077 - Rev. 4.0...

  • Page 10: Section 1 - Introduction

    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 QAM256 modulator supports output frequency of 35 to 37 MHz or 43 to 44 MHz or 50 to 862 MHz.
  • Page 11 Introduction QAM256 Digital Video Modulator and Upconverter TM077 - Rev. 4.0...

  • Page 12: 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 13: 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 14 QAM256 Digital Video Modulator and Upconverter Installation TM077 – Rev. 4.0...

  • Page 15: Section 3 - Theory Of Operation

    QAM256 Digital Video Modulator and Upconverter Theory of Operation Theory of 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 16 Theory of Operation QAM256 Digital Video Modulator and Upconverter TM077 - Rev. 4.0...

  • Page 17: 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 18: Lcd Front Panel Display

    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 19: 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 20: 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 21: Interface Menu Options And Parameters

    QAM256 Digital Video Modulator and Upconverter User Interfaces 4.3.3 Interface Menu Options and Parameters Interface Type: { PAR M2P, Parallel, ASI, Advanced ASI} Clock Polarity: {Normal, Inverted} Data Invert: {Normal, Inverted} TM077 – Rev. 4.0...

  • Page 22: Monitor Menu Options And Parameters

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

  • Page 23: System Menu Options And Parameters

    {Normal, CW} 4.4 Terminal Port User Interface The Remote Port (J5) of the QAM256 allows for complete control and monitoring of all QAM256 parameters and functions via an RS-232 Serial Interface, or RS-485 for RLLP Protocol. ‘Terminal Mode’ can be entered from the front panel by selecting “System” and then “Control Mode”...

  • Page 24: Connecting The Terminal

    QAM256 Digital Video Modulator and Upconverter 4.5 Connecting the Terminal Connect the computer to the QAM256 Remote Connector (J5) on the rear of the unit using the RS-232 Cable. Enable the terminal by selecting Terminal Mode (located under the System - Control Mode Menu) from the front panel.
  • Page 25 QAM256 Digital Video Modulator and Upconverter User Interfaces Main Menu Screen: TM077 – Rev. 4.0...
  • Page 26 User Interfaces QAM256 Digital Video Modulator and Upconverter Modulator Control Screen: Event Buffer Screen: 4-10 TM077 - Rev. 4.0...
  • Page 27 QAM256 Digital Video Modulator and Upconverter User Interfaces Alarm Status Screen: Latched Alarm Screen: TM077 – Rev. 4.0 4-11...

  • Page 28: Qam256 Terminal Mode Control

    User Interfaces QAM256 Digital Video Modulator and Upconverter Interface Controls Screen: 4.7 QAM256 Terminal Mode Control ‘Terminal Mode’ can be entered from the front panel by selecting ‘System’ and then ‘Control Mode’ followed by ‘Terminal.’ The default settings for the terminal are as follows: 19,200 Baud;...

  • Page 29: Management Information Base Structure

    SMI. Radyne Corporation’s Private Enterprise Number is 2591. Other products are added to Radyne Corporation’s subtree as they become remotely manageable through SNMP.
  • Page 30 User Interfaces QAM256 Digital Video Modulator and Upconverter Figure 1. Object Identifiers in the Management Information Base (Sheet 1 of 2) 4-14 TM077 - Rev. 4.0...
  • Page 31 QAM256 Digital Video Modulator and Upconverter User Interfaces Figure 1. Object Identifiers in the Management Information Base (Sheet 2 of 2) Refer to Appendix B for the QAM256 MIB. TM077 – Rev. 4.0 4-15...
  • Page 32 User Interfaces QAM256 Digital Video Modulator and Upconverter 4-16 TM077 - Rev. 4.0...

  • Page 33: Section 5 - Rear Panel 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 34: Tx Mon Port

    Rear Panel Interfaces QAM256 Digital Video Modulator and Upconverter Relay 2 C Relay 2 NO (Major Alarm) 5.3 TX MON Port The Transmit Monitor Port (J8) is a Female BNC Connector, -20 dB Monitor Port. 5.4 TX IF Port The Transmit IF Port (J9) is a Female BNC Connector.
  • Page 35 QAM256 Digital Video Modulator and Upconverter Rear Panel Interfaces Input Input Input Input Input Input Input Input Input Input Input Input Input TM077 – Rev. 4.0...

  • Page 36: Asi/Parallel Interface Connections

    The Transmit ASI Connector (J4) is a Female BNC Connector. 5.6 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 37: Framing/Interface Compatibility

    QAM256 Digital Video Modulator and Upconverter Rear Panel Interfaces 5.7 Framing/Interface Compatibility Table 5-5 represents the compatibility between the various interfaces and framing types. Table 5-5. Interface Compatibility Interface/Framing Parallel/DVB/M2P Normal ASI Advanced ASI X = Interface Supports This type of...
  • Page 38 Rear Panel 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...
  • Page 39 QAM256 Digital Video Modulator and Upconverter Rear Panel Interfaces TM077 – Rev. 4.0...

  • Page 40: Section 6 - Maintenance And Troubleshooting

    The QAM256 modulator requires no periodic field maintenance procedures. 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 41 Maintenance and Troubleshooting QAM256 Digital Video Modulator and Upconverter TM077 - Rev. 4.0...

  • Page 42: Section 7 - Technical Specifications

    QAM256 Digital Video Modulator and Upconverter Technical Specifications 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 43: Rf Interface

    Technical Specifications QAM256 Digital Video Modulator and Upconverter 7.2.1 RF Interface Frequency: 50 – 862 MHz, 1 Hz Steps Power Output: 45 – 60 dBmV, 1 dB Steps Power Output Accuracy: ± 1.0 dB Power Output Stability: ± 0.5 dB...
  • Page 44 QAM256 Digital Video Modulator and Upconverter Technical Specifications TM077 – Rev. 4.0...

  • Page 45: Appendix A - Product Options

    QAM256 Digital Video Modulator and Upconverter Product Options Product Options A.0 QAM256 Data Rates Table A-1. Maximum Symbol Rate = 7.1 Msps Minimum Maximum Modulation Type 1 Mbps 13.086275 Mbps 4 QAM 1 Mbps 26.172549 Mbps 16 QAM 1 Mbps 32.715686 Mbps...
  • Page 46 Product Options QAM256 Digital Video Modulator and Upconverter TM077 - Rev. 4.0...

  • Page 47: Appendix B - Snmp Mib

    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 48 Product Options QAM256 Digital Video Modulator and Upconverter radQAM256TxFraming OBJECT-TYPE SYNTAX INTEGER { framing187(1), framing188(2), framing204(3), data(4) } ACCESS read-write STATUS current DESCRIPTION "Selects Unframed, MPEG Sync Byte and MPEG Sync Byte plus Reed-Solomon" ::= { radQAM256ModNVStatus 6 } radQAM256TxModulation OBJECT-TYPE...
  • Page 49 QAM256 Digital Video Modulator and Upconverter SNMP MIB radQAM256TxClockPolarity OBJECT-TYPE SYNTAX INTEGER { normal(1), inverted(2) } ACCESS read-write STATUS current DESCRIPTION "Selects clock polarity for Tx terrestrial clock relative to Tx data." ::= { radQAM256ModNVStatus 12 } radQAM256TxDataPolarity OBJECT-TYPE SYNTAX INTEGER...
  • Page 50 Product Options QAM256 Digital Video Modulator and Upconverter radQAM256TxMinorAlarm2Mask OBJECT-TYPE SYNTAX INTEGER (0..255) ACCESS read-write STATUS current DESCRIPTION "Minor alarm 2 mask: Bits 0..7 = spares 0=mask, 1=allow" ::= { radQAM256ModNVStatus 18 } radQAM256CommonAlarm1Mask OBJECT-TYPE SYNTAX INTEGER (0..255) ACCESS read-write...
  • Page 51 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 52 Product Options QAM256 Digital Video Modulator and Upconverter radQAM256TxMinorAlarm2Status 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 Bits 0..7 Spares 0 = Pass, 1 = Fail"...
  • Page 53 QAM256 Digital Video Modulator and Upconverter SNMP MIB Bit 2..7=Spares" ::= { radQAM256ModStatus 9 } radQAM256TxLatchedMinorAlarm2Status OBJECT-TYPE SYNTAX INTEGER (0..255) ACCESS read-only STATUS current DESCRIPTION "Bits 0 ..7 Spares" ::= { radQAM256ModStatus 10 } radQAM256TxLatchedCommonAlarm1Status OBJECT-TYPE SYNTAX INTEGER (0..255) ACCESS read-only...
  • Page 54 ::= { radQAM256ModStatus 16 } 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. 4.0...
  • Page 55 QAM256 Digital Video Modulator and Upconverter SNMP MIB TM077 – Rev. 4.0...

  • Page 56: Appendix C - Rllp Protocol

    Host Computer Remote Communications Control and status messages are conveyed between the QAM256, the subsidiary modems, and the host computer using packetized message blocks in accordance with a proprietary communications specification. This communication is handled by the Radyne Link Level Protocol (RLLP), which serves as a protocol ‘wrapper’...

  • Page 57: Protocol Wrapper

    QAM256 Digital Video Modulator and Upconverter C.1.2 Protocol Wrapper The Radyne COMMSPEC is byte-oriented, with the Least Significant Bit (LSB) issued first. Each data byte is conveyed as mark/space information with two marks comprising the stop data. When the last byte of data is transmitted, a hold comprises one steady mark (the last stop bit). To begin or resume data transfer, a space (00h) substitutes this mark.

  • Page 58: Frame Description Bus Handshaking

    M&C computer or by a subordinate piece of equipment (such as the QAM256) requesting access to the bus. Data is processed in accordance with the OPCODE, and the checksum for the frame is calculated. If the anticipated checksum does not match then a checksum error response is returned to the message frame originator.

  • Page 59: Global Response Operational Codes

    (such as increasing or decreasing transmit power level of a QAM256), the FSN is incremented after each message packet. When the FSN value reaches 255, it overflows and begins again at zero. The FSN tag is a powerful tool that assures sequential information framing, and is especially useful where commands require more than one message packet.

  • Page 60: Collision Avoidance

    ("single-thread") configuration accessible to the M&C computer directly. For example, if two QAM256 Modulators with different addresses (DESTINATION IDs) are linked to the same control bus at the same hierarchical level, both will attempt to respond to the M&C computer when the computer generates a multi-drop override ID...

  • Page 61: Software Compatibility

    RLLT exits the I/O wait state and takes appropriate action. Radyne equipment is logically linked to the control bus via an Internal Input / Output Processing Task (IOPT) to handle frame sequencing, error checking, and handshaking. The IOPT is essentially a link between the equipment RLLT and the control bus.

  • Page 62: Rllp Summary

    QAM256 Digital Video Modulator and Upconverter Remote Operations If the RLLT receives the packetized message from the sender before it times out, it checks for any error messages appended by the IOPT. In the absence of errors, the RLLT processes the received command sent via the transmitted packet and issues a "message out"...
  • Page 63 Remote Operations QAM256 Digital Video Modulator and Upconverter SYNC Byte = 16h (Always.) Data Count = 00 00h Source Address = FFh Destination Address = 20h = 32 decimal Frame Sequence Number = 01h Opcode = 20 01h Checksum = 41h...

  • Page 64: Remote Port Modes Of Operation

    QAM256 Digital Video Modulator and Upconverter Remote Operations Example #4 Command Mod TX Enable. (On) Example Parameters: SYNC Byte = 16h (Always.) Data Count = 00 01h Source Address = FFh Destination Address = 20h = 32 decimal Frame Sequence Number = 7Fh...
  • Page 65 Remote Operations QAM256 Digital Video Modulator and Upconverter Query Common Last Rate <2009h> Control QAM256 Common Command Set: Command Opcode Command Common Control Mode <2201h> Command Common Time <2204h> Command Common Date <2205h> Command Common Time & Date <2206h> Command Clear Common Alarms <2207h>...
  • Page 66 QAM256 Digital Video Modulator and Upconverter Remote Operations Command Modulator Framing <2246h> Command Modulator Interleaver <2247h> Command Modulator Roll off <2249h> Command Modulator Interface <224Ah> Type Command Modulator Data <224Bh> Polarity Command Modulator Clock <224Ch> Polarity Command Modulator Clear <224Dh>...
  • Page 67 Remote Operations QAM256 Digital Video Modulator and Upconverter <1> Year (0 through 99) <1> Month (0 through 11) <1> (0 through 30) <1> Hour (0 through 23) <1> Minute (0 through 59) <1> Second (0 through 59) Opcode: <2007h> Query a modulator's common alarms Query response: <1>...
  • Page 68 QAM256 Digital Video Modulator and Upconverter Remote Operations (Bit 3 = Spare) (Bit 4 = Spare) (Bit 5 = Spare) (Bit 6 = Spare) (Bit 7 = Spare) (0 = mask, 1 = allow) Opcode: <2009h> Query a modulator’s Last Rate Control.
  • Page 69 Remote Operations QAM256 Digital Video Modulator and Upconverter Opcode: <2209h> Set Common Last Rate Control. <1> Last Rate Control (0=Symbol, 1=Data, 2=Auto) Modulator Query Opcodes Opcode: <2040h> Query a modulator's frequency Query response: <4> Frequency (Binary value, 1 Hz steps)
  • Page 70 QAM256 Digital Video Modulator and Upconverter Remote Operations HSSI) Opcode: <204Bh> Query a modulator's data polarity Query response: <1> Data Polarity (0=Normal, 1=Inverted) Opcode: <204Ch> Query a modulator's clock polarity Query response: <1> Clock Polarity (0=Normal, 1=Inverted) Opcode: <204Dh> Query a modulator's alarms Query response: <1>...
  • Page 71 Remote Operations QAM256 Digital Video Modulator and Upconverter (Bit 4 = Spare) (Bit 5 = Spare) (Bit 6 = Spare) <1> Latched Minor Alarm1 (Bit 0 = Clock Activity Fault) (Bit 1 = Data Activity Fault) (Bit 2 = FIFO Fault)
  • Page 72 QAM256 Digital Video Modulator and Upconverter Remote Operations (0 = mask, 1 = allow) Opcode: <204Fh> Query a modulator's PRBS (test pattern) Query response: <1> PRBS (0 = Normal, 1 = PRBS23, 2 = PRBS23M, 3 = PRBS15, 4 = PRBS15M) Opcode: <2051h>...
  • Page 73 Remote Operations QAM256 Digital Video Modulator and Upconverter <4> Symbol rate (Binary value, 1sps steps) (This command will cause the carrier to turn off) Opcode: <2244h> Command a modulator's modulation. <1> Modulation (0=4 QAM, 1=16 QAM, 2=32 QAM, 3=64 QAM, 4=128 QAM, 5=256 QAM) Opcode: <2245h>...
  • Page 74 (0 = EIA STD, 1 = EIA HRC, 2 =EIA IRC, 3 = Trad STD, 4 = Trad HRC, 5 = Trad IRC) Opcode: <2261h> Command a modulator's channel <1> Channel (See channel entry tables at end of protocol) The following information is applicable to the QAM256 Cable Upconverter: TM077 – Rev. 4.0...
  • Page 75 Remote Operations QAM256 Digital Video Modulator and Upconverter Following are the US channel entries: Channel Freq. in Channel Freq. in Entry Entry Custom Custom "54" 403.25 "2" 55.25 "55" 409.25 "3" 61.25 "56" 415.25 "4" 67.25 "57" 421.25 "1" Custom "58"...
  • Page 76 QAM256 Digital Video Modulator and Upconverter Remote Operations "44" 343.25 "108" 697.25 "45" 349.25 "109" 703.25 "46" 355.25 "110" 709.25 "47" 361.25 "111" 715.25 "48" 367.25 "112" 721.25 "49" 373.25 "113" 727.25 "50" 379.25 "114" 733.25 "51" 385.25 "115" 739.25 "52"...
  • Page 77 Remote Operations QAM256 Digital Video Modulator and Upconverter "34" 282.00 "93" 636.00 "35" 288.00 "94" 642.00 "36" 294.00 "100" 648.00 "37" 300.00 "101" 654.00 "38" 306.00 "102" 660.00 "39" 312.00 "103" 666.00 "40" 318.00 "104" 672.00 "41" 324.00 "105" 678.00 "42"...
  • Page 78 QAM256 Digital Video Modulator and Upconverter Remote Operations "24" 223.25 "83" 577.25 "25" 229.25 "84" 583.25 "26" 235.25 "85" 589.25 "27" 241.25 "86" 595.25 "28" 247.25 "87" 601.25 "29" 253.25 "88" 607.25 "30" 259.25 "89" 613.25 "31" 265.25 "90" 619.25 "32"...
  • Page 79 Remote Operations QAM256 Digital Video Modulator and Upconverter "H" 163.25 "LL" 367.25 "I" 169.25 "MM" 373.25 "7" 175.25 "NN" 379.25 "8" 181.25 "OO" 385.25 "9" 187.25 "PP" 391.25 "10" 193.25 "QQ" 397.25 "11" 199.25 "RR" 403.25 "12" 205.25 "SS" 409.25 "13"...
  • Page 80 QAM256 Digital Video Modulator and Upconverter Remote Operations Channel Freq. in Channel Freq. in TRAD TRAD Entry Entry Custom Custom "P" 253.25 "2" 55.25 "Q" 259.25 "3" 61.25 "R" 265.25 "4" 67.25 "S" 271.25 "A-8" 73.25 "T" 277.25 "5" 79.25 "U"...
  • Page 81 Remote Operations QAM256 Digital Video Modulator and Upconverter C-26 TM077 – Rev. 4.0...

  • Page 82: Glossary

    QAM256 Digital Video Modulator and Upconverter Glossary Glossary Ampere Alternating Current Analog to Digital Converter Automatic Gain Control Alarm Indication System. A signal comprised of all binary 1s. AMSL Above Mean Sea Level ANSI American National Standards Institute ASCII American Standard Code for Information Interchange...
  • Page 83 Glossary QAM256 Digital Video Modulator and Upconverter Celsius CATS Computer Aided Test Software CA/xxxx Cable Assembly CD-ROM Compact Disk – Read Only Memory Clock Centimeter Common Central Processing Unit Cyclic Redundancy Check. A system of error checking performed at the transmitting and receiving stations.
  • Page 84 QAM256 Digital Video Modulator and Upconverter Glossary Fahrenheit Frame Acquisition Sync. A repeating series bits, which allow acquisition of a frame. Federal Communications Commission Forward Error Correction FIFO First In, First Out FPGA Field Programmable Gate Arrays Firmware Force of Gravity...
  • Page 85 Glossary QAM256 Digital Video Modulator and Upconverter Kbps Kilobits per Second Kbps Kilobytes per Second Kilogram Kilohertz Ksps Kilosymbols per Second Liquid Crystal Display Light Emitting Diode Local Oscillator Milliampere Mbps Megabits per Second MFAS Multi-Frame Acquisition Sync. See FAS.
  • Page 86 QAM256 Digital Video Modulator and Upconverter Glossary Quadrature Amplitude Modulation QPSK Quadrature Phase Shift Keying Random Access Memory Radio Frequency Read Only Memory Root Mean Square Rack Unit. 1 RU = 1.75”/4.45 cm Receive (Receiver) Receive Data Reed-Solomon Coding. Reed-Solomon codes are block-based error correcting codes with a wide range of applications in digital communications and storage.
  • Page 87 Glossary QAM256 Digital Video Modulator and Upconverter W X Y Z Watt Misc. µs Microsecond 16QAM 16 Quadrature Amplitude Modulation 8PSK 8 Phase Shift Keying TM077 – Rev. 4.0...

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