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Radyne OM20 Installation And Operation Manual

Universal outdoor modem
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OM20
Universal Outdoor Modem
Installation and Operation Manual
IMPORTANT NOTE: The information contained in this document supersedes all previously
published information regarding this product. This manual is subject to change without prior notice.
Part Number MN-OM20
Revision 5

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  • Page 1 OM20 Universal Outdoor Modem Installation and Operation Manual IMPORTANT NOTE: The information contained in this document supersedes all previously published information regarding this product. This manual is subject to change without prior notice. Part Number MN-OM20 Revision 5...

  • Page 3: Installation And Operation Manual

    OM20 Universal Outdoor Modem Installation and Operation Manual Part Number MN-OM20 Revision 5 October 27, 2009 Copyright © 2009 Comtech EF Data. All rights reserved. Printed in the USA. Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: 480.333.2161...
  • Page 4 This page is intentionally blank.

  • Page 5: Table Of Contents

    2.4.2 OM20 General Antenna Post Mount Diagram..................2–6 2.4.3 OM20 General Antenna Post Mount Diagram..................2–7 2.4.4 OM20 Antenna Feed Arm Mount Diagram ..................2–8 2.4.5 OM20 with External TWTA Amplifier ....................2–9 2.4.6 OM20 Additional Interface Diagrams ....................2–10 CHAPTER 3.
  • Page 6 G.703 Interface (Optional) ......................... 4–15 4.8.2 Ethernet Data Interface J4 (Optional) ....................4–15 ..........................4–16 OLOMON ODEC 4.9.1 Reed-Solomon Operation in the OM20 ....................4–16 4.9.2 Reed-Solomon Code Rate ........................4–16 4.9.3 Interleaving ............................4–16 4.10 (D&I) ..........................4–17 ROP AND NSERT 4.11...
  • Page 7 Table of Contents Revision 5 OM20 Universal Outdoor Modem MN-OM20 5.1.11 LED Indicators ..........................5–8 5.1.12 G.703 Balanced – Connections are available via the J3 connector. Refer to Table 5.4a....5–8 5.1.13 EXT Reference J12 ..........................5–8 CHAPTER 6.
  • Page 8 Table of Contents Revision 5 OM20 Universal Outdoor Modem MN-OM20 CHAPTER 8. TECHNICAL SPECIFICATIONS ..................... 8–1 ..............................8–1 ATES ............................... 8–1 ODULATOR ............................8–2 EMODULATOR ..........................8–2 LESIOCHRONOUS UFFER ..........................8–2 ONITOR AND ONTROL OM20 D ) ......................8–2 ROP AND...
  • Page 9 Table of Contents Revision 5 OM20 Universal Outdoor Modem MN-OM20 ..............................C–2 ARRIER RTS ...............................C–2 ARRIER APPENDIX D. QUICK START GUIDE ......................... D–1 ............................D–1 NTRODUCTION ............................D–1 EQUIRED TEMS ........................ D–1 NTERFACE ETUP UIDELINES D.3.1 Preparing the OM-20 for Web Setup ....................D–1 IP N ..................
  • Page 10 Table of Contents Revision 5 OM20 Universal Outdoor Modem MN-OM20 H.1.1 Radyne AUPC ............................H–1 H.1.2 EF AUPC............................... H–2 H.1.3 Near Side AUPC ........................... H–2 viii...

  • Page 11: About This Manual

    PREFACE About this Manual This manual describes the installation and operation for the Radyne OM20. This is a technical document intended for earth station engineers, technicians, and operators responsible for the operation and maintenance of the OM20. Reporting Comments or Suggestions Concerning this Manual Comments and suggestions regarding the content and design of this manual are appreciated.

  • Page 12: Mn-Om20

    OM20 Universal Outdoor Modem Revision 5 Preface MN-OM20 Cautions and Warnings IMPORTANT or NOTE indicates a statement associated with the task being performed or information critical for proper equipment function. IMPORTANT CAUTION indicates a hazardous situation that, if not avoided, may result in minor or moderate injury.

  • Page 13: Safety Compliance

    OM20 Universal Outdoor Modem Revision 5 Preface MN-OM20 Safety Compliance EN 60950 Applicable testing is routinely performed as a condition of manufacturing on all units to ensure compliance with safety requirements of EN60950.This equipment meets the Safety of Information Technology Equipment specification as defined in EN60950.
  • Page 14 OM20 Universal Outdoor Modem Revision 5 Preface MN-OM20 Warranty Policy Comtech EF Data products are warranted against defects in material and workmanship for a period of two years from the date of shipment. During the warranty period, Comtech EF Data will, at its option, repair or replace products that prove to be defective.
  • Page 15 OM20 Universal Outdoor Modem Revision 5 Preface MN-OM20 The warranty excludes any responsibility by Comtech EF Data Corporation for incidental or consequential damages arising from the use of the equipment or products, or for any inability to use them either separate from or in combination with any other equipment or products.

  • Page 16: Customer Support

    OM20 Universal Outdoor Modem Revision 5 Preface MN-OM20 Customer Support Contact the Comtech EF Data Customer Support Department for: • Product support or training • Reporting comments or suggestions concerning manuals • Information on upgrading or returning a product A Customer Support representative may be reached at:...

  • Page 17: Chapter 1. Introduction

    Radyne’s OM20 outdoor modem is based on Radyne’s DMD20/LBST modem product platform. The Transmit IF output and Receive IF input frequencies of the OM20 are 950 to 2050 MHz. The modem operates over a data rate range of 2.4 Kbps to 20 Mbps in 1 bps steps including at all standard IBS and IDR Data rates up to 8.448 Mbps.

  • Page 18: Om20 Configurations

    OM20 Universal Outdoor Modem Introduction The OM20 supplies DC voltage and 10 MHz reference to the BUC and LNB via the IF Cables. The output from the TX Port (J8) consists of the L-Band output frequency, high-stability 10 MHz reference, and an optional 24 or 48 Volts to the BUC. The RX Port I/O (J7) consists of the L- Band input frequency (from the LNB), high-stability 10 MHz reference and 13, 15, 18, and 21 volts.

  • Page 19: Features/Options Installed At Time Of Order

    Software Feature Upgrades are a simple and quick way of changing the feature set of an installed modem. Feature upgrades are how most OM20 options are implemented. Features may be purchased at any time by contacting a Radyne Corp. salesperson. Refer to Appendix B for information on how upgrade features.
  • Page 20 OM20 Universal Outdoor Modem Introduction Notes: MN-OM20– Revision 5 1–4...

  • Page 21: Chapter 2. Installation

    Installation Requirements The OM20 is designed to be easily installed on antenna offset feed struts or king posts. It requires standard uni-strut type hardware (or comparable) and 3/8-16 bolts. Standard mounting brackets and hardware are included with the OM20. Optional Transmit and Receive coaxial cable or waveguide can be provided from the factory if requested and specified.

  • Page 22: Unpacking

    Unpacking 2.2.1 Outdoor Modem (OM20) The OM20 Universal Outdoor Modem is carefully packaged at the factory to avoid damage and should arrive complete with the following items for proper installation:  OM20 Universal Outdoor Modem ...

  • Page 23: Removal And Assembly

    The Standard OM20 is shipped in a single box that contains mating connectors. Carefully unpack the unit and ensure that all of the above items are in the carton. The standard OM20 power supply is designed for universal AC (95-250VAC, 50/60 Hz) application and is capable of supplying DC power to the BUC and LNB.

  • Page 24: Mounting And Wiring Considerations

    Figure 2.2a. OM 20 Rear Interconnects (cont) Mounting and Wiring Considerations The OM20 should be mounted with the BUC higher than the OM20 with the interconnecting communication cabling and power cords at the lowest possible position. Unit weight and cable/waveguide length should be considered when selecting the mounting location The following diagrams should be used as a reference to the various mounting options.

  • Page 25: Om20 Mounting Bracket Instructions

    Installation 2.4.1 OM20 Mounting Bracket Instructions Mount the OM20 to the desired location at the antenna using the supplied brackets. Each brackets has two threaded holes 3/8 x 16 as shown in Figure 2-4 below. Figure 2.4. OM20 Mounting Brackets MN-OM20–...

  • Page 26: Om20 General Antenna Post Mount Diagram

    Installation 2.4.2 OM20 General Antenna Post Mount Diagram The OM20 and BUC can be mounted vertically on the antenna King post. This is the preferred method of mounting on smaller diameter antenna systems where sufficient support of the feed boom arm is not available.

  • Page 27: Om20 General Antenna Post Mount Diagram

    Installation 2.4.3 OM20 General Antenna Post Mount Diagram The OM20 can be mounted on the antenna King post and the BUC on the offset feed arm. System is shown with the Ethernet interface allowing for Data and M&C functions. RX IF TXIF L - BAND 950 –...

  • Page 28: Om20 Antenna Feed Arm Mount Diagram

    Installation 2.4.4 OM20 Antenna Feed Arm Mount Diagram The OM20 can be mounted horizontally on the Antenna Feed arm. This is the preferred method of mounting on larger diameter antenna systems where sufficient support and weight handling characteristics of the antenna offset feed arm is available.

  • Page 29: Om20 With External Twta Amplifier

    OM20 Universal Outdoor Modem Installation 2.4.5 OM20 with External TWTA Amplifier The OM20 can be used as a driver for an external SSPA/TWTA High Power Amplifier for systems requiring higher output RF Power Levels. RX IF T X I N...

  • Page 30: Om20 Additional Interface Diagrams

    OM20 Universal Outdoor Modem Installation 2.4.6 OM20 Additional Interface Diagrams RX IF TXIF L - BAND 950 – 2050 MHz 10 MHz /+ 24 VDC RXIF L - BAND 950 – 2050 MHz TX OUT RX INPUT + 18 VDC...
  • Page 31 ENET DATA / M & C I / O M & C I / O EIA - 530 DATA / M & C I / O ASI DATA IN ASI DATA TX ASI DATA OUT ASI DATA RX Figure 2-11. OM20 ASI Interface MN-OM20– Revision 5 2–11...
  • Page 32 OM20 Universal Outdoor Modem Installation Notes: MN-OM20– Revision 5 2–12...

  • Page 33: Chapter 3. Om20 Initial Configuration

    Chapter 3. OM20 Initial Configuration OM20 Initial Configuration Check The OM20 is shipped from the factory with preset factory defaults. Upon initial power-up, a user check should be performed to verify the shipped modem configuration. CAUTION The correct OM20 Interface Type (V.35, RS-422, RS-232, G.703, etc.) MUST be selected BEFORE the mating connectors are installed.
  • Page 34 OM20 Universal Outdoor Modem OM20 Initial Configuration Standard OM20 Factory Default Configuration Settings Modulator: Data Rate: 2.048 Mbps Mode: Closed Network Satellite Framing: None Scrambler: V.35 (IESS) Drop and Insert: Disabled Inner FEC: 1/2 Rate Viterbi Outer FEC: Disabled Modulation:...

  • Page 35: Initial Configuration And Setup Process

    3.2.1 Initial Power-Up and Configuration Verification Turn on the unit by connecting the power cable to J1 of the OM20 and plugging the power cord into the appropriate AC Mains power source. Upon initial and subsequent power-ups, the OM20 Microprocessor will test itself and several of its components before beginning its Main Monitor/Control Prog.

  • Page 36: Om20 Verification Testing

    OM20 Setup parameters. 3.3.1 TX Output Verification Test Connect a Spectrum Analyzer to the TXRF output of the OM20. Verify that the modulator and TX interface parameters of the OM20 are correctly set. Enable the modulator output. Verify that the output frequency, symbol rate, and power level match the system setup parameters.

  • Page 37: Rx Input Verification Test

    Verify that all the receive parameters of the OM20 are correct. Remove the LNB coax cable from the Bias-T and connect to the RX L-Band input port J7 on the OM20. Enable the correct DC Bias Voltage for the LNB from the OM20 Browser. Verify that the OM20 receiver locks to the carrier of interest.
  • Page 38 OM20 Universal Outdoor Modem OM20 Initial Configuration Notes: MN-OM20– Revision 5 3–6...

  • Page 39: Chapter 4. Om20 Theory Of Operation

    Chapter 4. OM20 Theory of Operation OM20 Hardware The OM20 Outdoor Modem is based on the DMD20 Modem product platform that consists of a two printed circuit card (minimum configuration) design with additional optioned printed circuit cards available for additional features. The minimum configuration consists of an L-Band/IF Assembly and a Digital Baseband Assembly.

  • Page 40: Om20 L-Band Printed Circuit Card

    OM20 Universal Outdoor Modem OM20 Theory of Operation 4.1.1 OM20 L-Band Printed Circuit Card The L-Band Printed Circuit Card consists of an analog modulation function, an analog complex downconversion, and two wide-band digital synthesizers. The block diagram of the L-Band Assembly is shown in Figure 4-2.

  • Page 41: Om20 Baseband Processing Printed Circuit Card

    The M&C System is based on a powerful microprocessor with a large amount of Flash memory. Several bus architectures are used to interconnect the M&C to all components of the OM20. Communications to the outside world is done via connections to the remote/terminal/alarm port (J2), or the Ethernet port (J4), and alarm ports.

  • Page 42: Om20 Functional Block Diagram

    OM20 Theory of Operation OM20 Functional Block Diagram Figure 4-3 represents the OM20 Functional Blocks. The modem is shown in a typical application with customer data, TX/RX RF equipment, and antenna I/O. Figure 4-3. OM20 Outdoor Modem Functional Block Diagram 4.2.1 Baseband Processing...

  • Page 43: Tx Baseband Processing

    OM20 Universal Outdoor Modem OM20 Theory of Operation 4.2.2 Tx Baseband Processing The Tx Data and Clock enters the Baseband Processor, passes through a Rate Adapting FIFO, and enters the Framer/Drop Processor. In Closed-Net Mode, the data passes through the Framer unaltered.

  • Page 44: Monitor & Control (M&C) Subsystem

    OM20 Universal Outdoor Modem OM20 Theory of Operation Monitor & Control (M&C) Subsystem The modems M&C system is connected to most of the circuitry on any board contained in the modem. These connections provide status on the working condition of the circuitry as well as providing the data required for the various measurements the modem provides.

  • Page 45: Terminal Port

    This communication is handled by the Radyne Link Level Protocol (RLLP), which serves as a protocol ‘wrapper’ for the RM&C data. Complete information on monitor and control software is contained in the following sections.

  • Page 46: Modem Monitor Status

    De-energized when any transmit side fault is detected. Demod Fault: De-energized when any receive side fault is detected. Two Open Collector Faults are available on the OM20 connector J3 pins 10 &16 Mod Fault: Will sink up to 20 ma (maximum) until a transmit or common fault is detected.
  • Page 47 OM20 Universal Outdoor Modem OM20 Theory of Operation  TX Baseband Loopback - Tx Data port is looped back to the Rx Data port after the interface driver/receiver. (after the framing unit)  RX Terrestrial Loopback - Receive Data from the satellite is looped back for retransmission to the satellite, providing a far end loopback.
  • Page 48 OM20 Universal Outdoor Modem OM20 Theory of Operation Figure 4-4. Loopback Functional Block Diagram MN-OM20– Revision 5 4–10...
  • Page 49 OM20 Universal Outdoor Modem OM20 Theory of Operation Figure 4-5. Loopback Functional Block Diagram Figure 4-6. Loopback Functional Block Diagram MN-OM20– Revision 5 4–11...

  • Page 50: Clocking Options

    OM20 Universal Outdoor Modem OM20 Theory of Operation Clocking Options The modem supports a number of different clocking options that can be recovered from the satellite or the terrestrial links. The various clocking options allow users to determine which clock will best fit their applications. Figure 4-7 gives an overview on how the modem processes the various clocks for the Tx Clock source and the Rx Buffer Clock source.

  • Page 51: Scte: Serial Clock Transmit External

    OM20 Universal Outdoor Modem OM20 Theory of Operation The following paragraphs define the types of clocking options available to the user at the Front Panel.  SCT (Internal Oscillator)  SCTE (External Tx Terrestrial Clock)  Rx Satellite Clock 4.7.1.1 SCTE: Serial Clock Transmit External The SCTE clock is the Transmit Terrestrial Clock associated with the data interface.

  • Page 52: Rx Sat Clock

    SCT is sometimes referred to as Internal Timing or Send Timing (ST). 4.7.2.4 EXT CLK/EXT BNC: The External Clock connector is not supported in the OM20. 4.7.2.5 EXT IDI: Insert Data In External IDI is used only for E1/T1 Drop and Insert applications. The available T1/E1 Frame Source selections are External, Internal, and IDI/DDO Loopback.

  • Page 53: Ext Ref: External Reference, Optional

    OM20 Universal Outdoor Modem OM20 Theory of Operation 4.7.3 EXT REF: External Reference, Optional The External Clock connector is optional and must be requested at time of order. This is not actually a clock, but does have some clocking implications. When the external reference is used, the master oscillator within the modem is locked to the external reference, and the internal accuracy and stability of the unit assumes that of the External Reference.

  • Page 54: Reed-Solomon Codec

    (219, 201), (194, 178), (225, 205). 4.9.3 Interleaving The OM20 allows for interleaving depths of 4, 8 or 12 R-S Blocks. This allows burst errors to be spread over multiple blocks in order to enhance the error correcting performance of the R-S Codec.

  • Page 55: Drop And Insert (D&I)

    OM20 Universal Outdoor Modem OM20 Theory of Operation Figure 4-9 Reed-Solomon Decoder Functional Block Diagram Table 4-1. Reed-Solomon Codes Type of Data Rate R-S Code Bandwidth Interleaving Maximum Service (Kbps) (n, k, t) Expansion Depth R-S Codec [ (n/k) -1 ]...

  • Page 56: Om20 Automatic Uplink Power Control (Aupc Operation)

    OM20 Universal Outdoor Modem OM20 Theory of Operation 4.11 OM20 Automatic Uplink Power Control (AUPC Operation) Refer to Appendix F 4.12 Asynchronous Overhead Operation J3 (Framing/Multiplexer Capability) The Asynchronous Framing/Multiplexer is capable of multiplexing a relatively low-speed overhead channel onto the terrestrial data stream resulting in a slightly higher combined or aggregate data rate through the modem.

  • Page 57: Standard Ibs Mode

    OM20 Universal Outdoor Modem OM20 Theory of Operation 1536 9600 1664 19200 1792 19200 1920 19200 1920 19200 2048 1024 19200 19200 19200 1024 19200 1088 19200 1152 19200 1216 19200 1280 19200 1344 19200 1408 19200 1472 19200 1536...

  • Page 58: Asynchronous Multiplexer Mode

    OM20 Universal Outdoor Modem OM20 Theory of Operation Bit 2 Frame Alignment Part of the Frame Alignment word. Backward Alarm Transmit and Receive with main processor to activate Bit 3 Main Alarm/LED. Multiframe Message As per IBS. Bit 4 Spare Not currently utilized.

  • Page 59: Esc Backward Alarms

    OM20 Universal Outdoor Modem OM20 Theory of Operation The IBS Async mode MUST be selected for true Asynchronous channel operation to be available. 4.15 ESC Backward Alarms When running in IDR Mode and if the modem has the ESC Option, there will be four Backward Alarms available for use by the earth stations at each end of the link (both ends must have the ESC option).

  • Page 60: To Disable The Esc Backward Alarms

    OM20 Universal Outdoor Modem OM20 Theory of Operation 4.15.1 To Disable the ESC Backward Alarms If the ESC ALARMS Port will not be used and the Backward Alarm Indications are to be disabled, you must connect pins 10, 11, 22 and 23 to pin 1 (gnd) on ESC Alarms port.

  • Page 61: Aggregate Data Rate

    OM20 Universal Outdoor Modem OM20 Theory of Operation Figure 4-10. 1 to 1 Control Ratio diagram The Control Ratio of the receiving units must match the Control Ratio of the transmitting unit. 4.16.2 Aggregate Data Rate The aggregate data rate equals the following:...

  • Page 62: Overhead Rate Comparison

    OM20 Universal Outdoor Modem OM20 Theory of Operation NOTE: The Maximum In-Band rate is 115200. The Async interface Rate must be equal or greater in value. 4.16.3 Overhead Rate Comparison The SCC Overhead Ratio varies depending on the User Data Rate, the In-Band Rate, and the Control Ratio.

  • Page 63: Scc Overhead Channel Setup

    OM20 Universal Outdoor Modem OM20 Theory of Operation Example 1: User Data Rate: 1,024,000 bps In-Band Rate: 19,200 bps Control Ratio: 1 to 7 Minimum In-Band = (1,024,000 * 7)/((7 + 1) * 250) = 3,584 (less than In-Band Rate) Slot Bits = (1,024,000 * (7 * 10))/(19,200 * (7 + 1)) = 466 Actual Ratio = (466 + 10)/466 = 1.021...
  • Page 64 OM20 Universal Outdoor Modem OM20 Theory of Operation i. ES BAUD RATE {150 - 115200} ii. This allows the user to select the baud rate of the ASYNC port (J17) in SCC Mode. 7. Under TX ASYNC MODE Menu, set the desired ES BITS/CHAR: i.

  • Page 65: Edmac Satellite Framing/Deframing Mode

    Users are required to identify these ID codes when they want additional features added to their unit. Radyne will supply a new ID code that is required to be entered in the ID code field. Once the new ID code is entered, the modem will activate the new features.
  • Page 66 OM20 Universal Outdoor Modem OM20 Theory of Operation Notes: MN-OM20– Revision 5 4–28...

  • Page 67: Chapter 5. Rear Panel Interfaces

    This section discusses the electrical interfaces available of the unit. OM20 External Interface Connections All OM20 external connections are interconnected to labeled connectors located on the front of the unit. Any connection interfacing to the OM20 must utilize the appropriate mating connector (supplied).
  • Page 68 OM20 Universal Outdoor Modem Rear Panel Interfaces Figure 5-1. OM20 Front panel ports Figure 5-1A. OM20 Rear panel ports MN-OM20– Revision 5 5–2...

  • Page 69: Power Input

    DC Power Input/Switch (Optional) An Optional DC Power Input is available for the OM20. The unit may be powered from a 44 – 56 VDC source with a maximum unit power consumption of 5-2 A. This port is a 4-pin (D38999/24FC4PN) connector (mating connector supplied with the unit).
  • Page 70 Section 6 for the port interface specification. The OM20’s internal M&C system is connected to most of the circuitry on any board contained in the chassis. These connections provide status on the condition of the circuitry and provide the data required for the various measurements the OM20 provides. The on-board M&C processes this information and generates status indications and alarms when necessary.
  • Page 71 OM20 Universal Outdoor Modem Rear Panel Interfaces 5.1.3 EIA-530 Synchronous Data, ES-ES Asynchronous Overhead Data, and G.703 Balanced Data I/O Port (J3) This 38 Pin D38999/24FD35PN Connector contains the EIA-530 data connections (RS- 422/V.35/RS-232, the ES-ES RS485 Asynchronous Overhead data interface, the G.703 Balanced interface, and the Open Collector Modulator and Demodulator Faults.

  • Page 72: Ethernet Data/M&C (J4)

    OM20 Universal Outdoor Modem Rear Panel Interfaces Send Timing B (+) ST-B Output No Connect Clear To Send B (+) CS-B Output Table 5.4.cont. EIA-530 Synchronous Data I/O; ES-ES Async Data Connector (J3) Signal Name Signal Direction EIA-530 Std. Pin No.

  • Page 73: Ground Lug (J6)

    Data/M&C interface. Cat 5E Ethernet cable can support data rates up to 100 MHz (100 Base-T), easily allowing for a 20 Mbps modem data rate (this is the highest available OM20 data rate), with a typical maximum cable length of 100 meters at 20°C. Temperature de-rating of 0.4 %/°C (minimum) should be used when determining the maximum cable length for temperatures exceeding 20°C.

  • Page 74: Sd (J10) (Optional)

    OM20 Universal Outdoor Modem Rear Panel Interfaces 5.1.9 SD (J10) (Optional) Based on unit configuration, this connector is used for either G.703 Unbalanced Transmit Send Data (Drop Data In) or for ASI data in depending on the optional interface ordered. The connector is a 75-Ohm Female BNC Connector.

  • Page 75: Chapter 6. Web Browser/Remote Protocol

    Protocol Web Browser User Interface The Web Browser interface for OM20 can be accessed through the RJ45, SNMP port located on the unit. Instructions on how to configure the interface for this application are discussed. The Web Browser menus for the OM20 can only be accessed utilizing Microsoft Internet Explorer 6 or greater.

  • Page 76: Appearance

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol Figure 6-1. Web User Interface 6.2.1 Appearance This site is a monitor and control of an individual complete satellite terminal. With a front panel look and feel, and an appearance that resembles the DMD20 layout, the product features a familiar look.

  • Page 77: Navigation

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol 6.2.2 Navigation The navigation scheme consists of gel tabs that correspond to the front panel top-level menu selections. When the mouse is dragged over a tab, it gets highlighted with a rollover effect and a sub-level of selections is revealed.

  • Page 78: Led Indicators

    “Contact Us”. 6.2.3 LED Indicators Twelve LEDs on the OM20 GUI Interface (Refer to Table 6-2) indicate the status of the OM20’s operation. The LED colors maintain a consistent meaning. Green 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 79: Gui Screen Menus

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol GUI Screen Menus There are four main menus displayed on the Introduction screen upon startup of the web browser. This screen will give a brief overview of the product and contains no configurable items. The four main menus and with submenus are: ...

  • Page 80: Introduction Menu

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol 6.3.1 Introduction Menu This menu will first appear when starting up the web browser. This page lists the general features of the unit, and lists a brief description of the unit. Notice on the bottom of the page that there are selections for Technical Specifications, Product Options, Troubleshooting, About Us, and Contact us.

  • Page 81: Login Screen

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol 6.3.1.1 Login Screen Upon initially accessing the Password Setup, IP Administration and Monitor & Control configuration menu tabs a login prompt will appear. In order to gain access to any of the configuration menus, log in with the correct user name and password. (The factory default login name is “admin”...

  • Page 82: Password Setup

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol 6.3.2 Password Setup The Access Menu allows for multiple operators to be allowed access to the system. User access priorities can be set be completing the fields in the Access menu below. Access Menu Figure 6-4.
  • Page 83 OM20 Universal Outdoor Modem Web Browser/Remote Protocol Preferences Menu Figure 6-5. Modem Preferences menu User Confirmation: {DISABLED, ENABLED} The user confirmation preference allows the user to force/disable confirmation of all changes through the web interface. This does not override bandwidth confirmations. However, these are always enabled.

  • Page 84: Ip And Application Administration

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol 6.3.3 IP and Application Administration The Modem Addressing menu provides instructions on how to configure the modem, applications and PC. 6.3.3.1 Modem Addressing Figure 6-6. Modem Addressing Server Boot Mode: {DEFAULT, NON-VOL, BOOTP, IP TEST}...
  • Page 85 OM20 Universal Outdoor Modem Web Browser/Remote Protocol IP TEST: The IP Test boot mode has a similar behavior to the default boot mode. The Terminal, IP, SNMP, FTP and Web parameters changed by the default setting will also be reset by the IP Test boot mode.

  • Page 86: Configuring Applications

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol 6.3.3.2 Configuring Applications Figure 6-7. Configuring Applications SNMP Setup: SNMP Version: {V1 & 2, V3} Default = V1 & V2 Trap Version: {V1 & 2} Default = V1 Authorization: {TRAPS ON, TRAPS OFF} Default = TRAPS OFF...

  • Page 87: Table 6-5. Snmp Parameters

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol SNMP SNMP VERSION: V1 & V2 TRAP VERSION: AUTHORIZATION: TRAPS OFF RD COMMUNITY: PUBLIC RDWR COMMUNITY: PUBLIC USER 1 USER 2 USER 3 USER 4 Viewer-md5 Viewer-sha Oper-md5 Oper-sha ACCESS GROUP ACCESS GROUP...
  • Page 88 OM20 Universal Outdoor Modem Web Browser/Remote Protocol TERMINAL AND REMOTE PORT Type VT100 baud rate 19200 interface rs232 remote control terminal Table 6-8. Terminal and Remote Port Parameters NON-VOL: Stores and uses IP Mask and addresses as provided by the user.
  • Page 89 OM20 Universal Outdoor Modem Web Browser/Remote Protocol Configuring the PC Figure 6-8. Configuring the PC MN-OM20– Revision 5 6–15...

  • Page 90: Monitor And Control Menu

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol 6.3.4 Monitor and Control Menu Under this menu, all modem functions that are monitored and/or controlled are accessible. To access the M&C sub menu options drag the cursor across the gel-tabs. Note that as the cursor passes over a tab it is highlighted and a menu drops below the tab.
  • Page 91 OM20 Universal Outdoor Modem Web Browser/Remote Protocol Additionally, data rates not covered by the given network specification of operation will not be allowed. If the mode of operation is selected after the data rate has been entered, then the data rate must be compatible with the desired mode of operation or the mode will not be allowed.
  • Page 92 Uplink Frequency (MHz): Displays the output frequency of the BUC also referred to as Satellite uplink frequency. The Radyne technician must enter the BUC LO and OSC SIDE BAND before using this menu. The UPLINK FREQUENCY is a calculated measurement of both the BUC LO and OSC SIDE BAND.
  • Page 93 {2/3, 5/6, 8/9} Allows the user to select the Tx Code Rate and Type TPC Interleaver: {DISABLE, ENABLE} Allows user to disable or enable the TPC Interleaver. Valid only for Radyne turbo codes TPC.495 and TPC.793 MN-OM20– Revision 5 6–19...
  • Page 94 OM20 Universal Outdoor Modem Web Browser/Remote Protocol Differential Coding: {ENABLED, DISABLE} Allows the user to enable or disable the Differential Encoder. Having the encoder enabled ensures proper phase lock. May not be adjustable in some modes. Scrambler Selection: {NONE, V.35-IESS, V.35 CITT, V.35 EF, IBS w/Optional Framing and optional Reed-Solomon, Reed-Solomon Scrambler w/Optional Framing, CCITT, V.35FC, OM-73,...
  • Page 95 OM20 Universal Outdoor Modem Web Browser/Remote Protocol Async Inband Rate: {75, 150, 300, 600. 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200} Allows the user to select the async inband rate. {150 – 1024} For IBS ES to ES {150 – 19200} For ES to ES Enhanced {150 –...
  • Page 96 OM20 Universal Outdoor Modem Web Browser/Remote Protocol ODU BUC Menu Figure 6-12. OBU-BUC menu LO Frequency (MHz): Allows the user to enter the Local Oscillator frequency of the BUC LO in order for the uplink frequency to be displayed correctly (refer to the BUC manufacturer’s specifications).
  • Page 97 OM20 Universal Outdoor Modem Web Browser/Remote Protocol frequency. If the BUC LO is higher in frequency then the user must enter HIGH SIDEBAND. 10 MHz BUC Reference: {ENABLED, DISABLED} Allows the user to enable or disable the 10 MHz BUC reference clock.
  • Page 98 OM20 Universal Outdoor Modem Web Browser/Remote Protocol CODAN: Enables the FSK Communication link for CODAN BUCs only. This feature enables the DMD20LBST to retrieve and display certain BUC parameters on the front panel of the modem. TERRASAT: Enables the FSK communication link for Terrasat BUCs only.
  • Page 99 OM20 Universal Outdoor Modem Web Browser/Remote Protocol QUERY FOR ADDRESS The modem will initiate a FSK query requesting BUC address. PASS THRU: Allows the user to communicate with the BUC utilizing the BUCs message protocol AUPC Menu These selections are visible only when the AUPC Option is installed.
  • Page 100 'REMOTE CL ACTION' Menu or the 'LOCAL CL ACTION'. RADYNE: Enables Radyne Local AUPC Function. In the event the remote demodulator losses lock, the local output power level will adjust itself to the nominal level. This nominal power should be set to a level high enough to re-establish communications regardless of rain fade.
  • Page 101 This allows the user to set the desired E for the local receiver. RADYNE AUPC: When configured for Radyne AUPC, this setting is compared against the remote E and commands to the local modem to increase or decrease the local transmit power.
  • Page 102 ‘NO DATA’ will be displayed. IMPORTANT When modems are configured for Radyne AUPC, the remote Eb/No will be displayed in the Monitor Menus. MN-OM20– Revision 5 6–28...

  • Page 103: Receive Menu

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol 6.3.4.2 Receive Menu The Receive menu contains sub menus; General | IF, Data, Reed Solomon and ODU-LNB. General | IF Configuration Menu Figure 6-14. General | IF Configuration Network Spec: {IDR, IBS, DROP & INSERT, CLOSED NET, DVB SAT} Used with IDR, or IBS Interface Only.
  • Page 104 OM20 Universal Outdoor Modem Web Browser/Remote Protocol Spectrum Mask: Intelsat For Data Rates < 1.544 Mbps Framing Type: 1/15 (IBS) Descrambler Type: IESS-309 Spectrum Mask: Intelsat IBS: (IESS-309) For Data Rates < 2.048 Mbps Framing Type: 1/15 (IBS) Descrambler Type:...
  • Page 105 OM20 Universal Outdoor Modem Web Browser/Remote Protocol Downlink Frequency (MHz): Displays the input frequency into the LNB from the satellite, also referred known as Satellite downlink frequency. The user must enter the LNB LO and OSC SIDEBAND of the LNB before using this menu.
  • Page 106 OM20 Universal Outdoor Modem Web Browser/Remote Protocol Limitations of Fast Acquisition: The maximum symbol rate for Fast Acquisition is 1028Ksps. Fast Acquisition must be disabled for rates greater than 1028Ksps. Only supports QPSK and 8PSK in a NON-DVB MODE. Does not support spectral inversion applications.
  • Page 107 Allows the user to select the Rx Code Rate and Type. TPC Interleaver {DISABLED, ENABLED} Allows the user to disable or enable TPC Interleaver. Valid only for Radyne turbo codes TPC.495 and TPC.793. Differential Encoding {ENABLED, DISABLE} Allows the user to enable or disable the Differential Decoder.
  • Page 108 OM20 Universal Outdoor Modem Web Browser/Remote Protocol (BPSK Mode Only) ESC Overhead {VOICE X2, DATA 64KBPS} IDR ESC Channel used for Voice or 64 K data channel. SCC Control Ratio {1/1, 1/2, 1/3, 1/4, 1/5, 1/6, 1/7} NOTE: Only available (visible) when SCC is selected for the...
  • Page 109 OM20 Universal Outdoor Modem Web Browser/Remote Protocol ReedSolomon Control: {ENABLED, DISABLED} Allows the user to Enable/Disable the Reed-Solomon Encoder. RS N Value: {Refer to Table 3-1 for valid n/k values} Displays the currently used N value, Reed-Solomon Codes. In Closed Net Mode, the user may select custom R-S Codes if optional Reed Solomon Card is installed.
  • Page 110 OM20 Universal Outdoor Modem Web Browser/Remote Protocol Allows the user to select the location of the LNB LO. The user must enter the location of the LNB LO in order for the UPLINK FREQUENCY to be displayed correctly. The LNB LO can be either higher or lower in frequency than the LNB output frequency.

  • Page 111: Interface Menu

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol 6.3.4.3 Interface Menu TX Setup Menu Figure 4-18. TX Setup Menu Circuit ID : Allows the user entry of a Tx Circuit Identifier. Circuits can be given up to an 11 Character alphanumeric identity such as LINK1.
  • Page 112 OM20 Universal Outdoor Modem Web Browser/Remote Protocol SCT Clock Source: {SCT, SCR} Allows the user to select SCT Source. SCT is the internally generated SCT clock. SCR is the Rx Satellite clock. SCR us used for loop timing. SCT Clock Polarity:...
  • Page 113 OM20 Universal Outdoor Modem Web Browser/Remote Protocol ES Baud Rate: {150 – 1024} For IBS ES to ES {150 – 19200} For ES to ES Enhanced {150 – 115200} For SCC Communications ES to ES : Fixed Baud Rate based on IBS Network Specification.
  • Page 114 OM20 Universal Outdoor Modem Web Browser/Remote Protocol RX Setup Menu Figure 6-19. RX Setup Menu Circuit ID: Provides entry of Rx Circuit Identifier. Circuits can be given up to an 11 Character alphanumeric Identity such as DLINK1 Terrestrial Streaming: {BYTE OUTPUT, PACKET OUTPUT} ASI only...
  • Page 115 OM20 Universal Outdoor Modem Web Browser/Remote Protocol BUFFER CLOCK CONTROL Buffer Size (msec): {0 - 64 msecs} Allows the user to set the Doppler Buffer Size in msec. Buffer Clock Polarity: {NORMAL, INVERTED} Allows the user to select the Buffer Clock Polarity for the Tx Terrestrial Clock relative to the Tx Data.
  • Page 116 OM20 Universal Outdoor Modem Web Browser/Remote Protocol ES to ES Enhanced: Allows user to select the Interface Baud Rate. This selection will allow the user to set rate as listed in Table 3-3. SCC: Allows user to select the interface Baud rate. Interface Rate must be equal to or greater than the In-Band Rate.
  • Page 117 OM20 Universal Outdoor Modem Web Browser/Remote Protocol General Menu Figure 6-20. General Menu External Frequency (MHz): {Variable Through Data Rate} Allows the user to select the external clock frequency in MHz. Reference Frequency Source: {INTERNAL, EXTERNAL, HIGH-STABILITY} Reference Frequency (MHz): {EXTERNAL, HIGH-STABILITY} MN-OM20–...

  • Page 118: Monitor Menu

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol 6.3.4.4 Monitor Menu General | Voltages Menu Figure 4-21. General | Voltages Menu IMPORTANT LNB and BUC options are only available on the DMD20LBST and the OM20. Rx Offset Frequency (Hz): Displays the received carrier frequency offset as measured by the modem.
  • Page 119 OM20 Universal Outdoor Modem Web Browser/Remote Protocol Corrected BER: The CBER display shows an estimated corrected bit error rate of the modem. Depending on the symbol rate the modem is running, the high-end performance scale of this display will vary...
  • Page 120 OM20 Universal Outdoor Modem Web Browser/Remote Protocol Monitor Eth Link Status Menu Figure 6-22. ETH Link Status Menu Total Packets: Displays the total number of Ethernet packets received from the satellite (Only visible when Ethernet is selected as the interface type).
  • Page 121 OM20 Universal Outdoor Modem Web Browser/Remote Protocol IMPORTANT The status of the following ports may be one of the following: Down: The link is down. Unresolved: Unable to agree on connection speed. 10 Mbps Half: Connected at 10 Base-T Half Duplex.
  • Page 122 OM20 Universal Outdoor Modem Web Browser/Remote Protocol Event Menu Figure 6-23. Event Menu Delete All: Cleans the entire event buffer. Event Type: Informational Yellow alarm. Indicates a transmit or receive warning condition. Red alarm. Indicates a transmit or receive failure, losing traffic.

  • Page 123: Alarms Menu

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol 6.3.4.5 Alarms Menu Transmit Menu Figure 6-24. Transmit Menu MAJOR ALARMS FPGA Config: {Pass/Fail, Unmasked/Masked} Indicates a transmit FPGA configuration failure. DSP Config: {Pass/Fail, Unmasked/Masked} Indicates a transmit DSP configuration failure. Sct Clock PLL: {Pass/Fail, Unmasked/Masked} Indicates that the Tx SCT Clock PLL is not locked.
  • Page 124 BUC Current: {Pass/Fail, Unmasked/Masked} Indicates that current is either below or above the threshold limits of the BUC, as specified by the OM20. Only active when BUC Voltage is enabled BUC Voltage: {Pass/Fail, Unmasked/Masked} Indicates that the voltage is not functioning correctly when the BUC Voltage is enabled.
  • Page 125 OM20 Universal Outdoor Modem Web Browser/Remote Protocol FORCE ALARM TEST: Clicking on this button will force alarms Receive Menu Figure 6-25. Receive Menu MAJOR ALARMS FPGA Config: {Pass/Fail, Unmasked/Masked} Indicates a receive FPGA hardware failure. DSP Config: {Pass/Fail, Unmasked/Masked} Indicates a receive DSP failure.
  • Page 126 LNB Current: {Pass/Fail, Unmasked/Masked} Indicates that current is either below or above the threshold limits of the LNB, as specified by the OM20. Only active when LNB Voltage is enabled. LNB Voltage: {Pass/Fail, Unmasked/Masked} Indicates that voltage is not functioning correctly when voltage is enabled.
  • Page 127 OM20 Universal Outdoor Modem Web Browser/Remote Protocol Indicates if the Circular Redundancy Check is passing in PCM- 30C and PCM-31C Modes. T1/E1 Signaling: {Pass/Fail, Unmasked/Masked} Indicates that the Framing Unit is unable to find the expected framing pattern. IFEC Lock:...
  • Page 128 OM20 Universal Outdoor Modem Web Browser/Remote Protocol Common Menu Figure 6-26. Common Menu COMMON ALARMS Terr FPGA Cfg: {Pass/Fail, Unmasked/Masked} Indicates an Interface Card FPGA configuration failure. Codec FPGA Cfg: {Pass/Fail, Unmasked/Masked} Indicates Turbo Codec Card FPGA configuration failure. Codec Dev Cfg: {Pass/Fail, Unmasked/Masked} Indicates Turbo Codec Card ASIC configuration failure.
  • Page 129 OM20 Universal Outdoor Modem Web Browser/Remote Protocol VOLTAGE ALARMS +1.5V RX Supply {Pass/Fail, Unmasked/Masked} Displays the measured voltage of the 1.5 Volt Rx power bus located inside the modem. -1.5V TX Supply {Pass/Fail, Unmasked/Masked} Displays the measured voltage of the 1.5 Volt Tx power bus located inside the modem.

  • Page 130: System Menu

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol 6.3.4.6 System Menu Terminal & Remote Menu Figure 6-27. Terminal & Remote Menu Remote Port Control {TERMINAL, COMPUTER} Terminal Emulation: {VT-100, WYSE50, VT100} Allows the user to select the emulation type. Terminal Baud Rate:...
  • Page 131 Displays the installed Monitor and Control revision. Main Board: Indicates the Radyne part number for the Baseband Board Assembly. IF Board: Indicates the Radyne part number for the IF Board Assembly. Terr Intf Board: Indicates the Radyne assembly number for the Terrestrial Interface Assembly. Codec Board: Indicates the Radyne part number for the Codec Board.
  • Page 132 Key Code Required Call customer service. Feature is enabled for customer use, but the OM20 hardware required has not been detected or has failed. Features upgrades can also be implemented through the Web Browser interface. MN-OM20– Revision 5...

  • Page 133: Test Menu

    OM20 Universal Outdoor Modem Web Browser/Remote Protocol 6.3.4.7 Test Menu Test Pattern | Carrier Menu Figure 6-30. Test Pattern | Carrier Menu Tx Test Pattern: {NONE, 2047, 2^15-1, 2^23-1} Allows the user to enable the transmit test patterns listed above.

  • Page 134: Configuring The Om20 To Use The Ethernet Data Interface (Optional)

    Clicking this button resets the test pattern counter and generator. Configuring the OM20 to use the Ethernet Data Interface (Optional) The OM20 Ethernet related menus are available and can be used to control the data interface as follows: Under the Interface Menu: Under the Tx Setup Menu: Set the Terrestrial Interface to Ethernet.

  • Page 135: Full-Duplex Flow Control

    When available buffer space is almost gone, the OM20 sends out a pause frame with the maximum pause time to stop the remote nodes from transmitting. The OM20 sends out another pause frame with the pause time set to zero as soon as free buffer space becomes available.

  • Page 136: Terminal Mode Control

    If the WAN Port is down, a Tx and Rx Ethernet WAN Major Alarm will be generated. Terminal Mode Control The OM20 Terminal Mode Control allows the use of an external terminal or computer to monitor and control the modem from a full screen interactive presentation operated by the modem itself.

  • Page 137: Modem Terminal Mode Control

    Modem Remote Communications 6.6.1 Host Computer Remote Communications The Remote Port (J2) of the OM20 allows for complete control and monitoring of all OM20 parameters and functions via an RS-232 Serial Interface, or RS-485 for RLLP Protocol. ‘Terminal Mode’ can be entered from the GUI interface under the “System” menu by selecting “System”...
  • Page 138 OM20 Universal Outdoor Modem Web Browser/Remote Protocol MN-OM20– Revision 5 6–64...

  • Page 139: Chapter 7. Maintenance And Troubleshooting

    Dispose of used batteries in accordance with local and national regulations. Periodic Maintenance There is no external fuse on the OM20. The fuse is located on the power supply assembly inside the case, and replacement is not intended in the field. 7.1.1 Clock Adjustment The OM20 allows for internal VCO speed adjustment from the GUI.

  • Page 140: Alarm Faults

    OM20 Universal Outdoor Modem Maintenance and Troubleshooting Symptom Possible Cause The Modem will not acquire the There is an improper receive input to modem. incoming carrier: The Receive Carrier Level is too low. The Receive Carrier Frequency is outside of the acquisition range.

  • Page 141: Major Rx Alarms

    OM20 Universal Outdoor Modem Maintenance and Troubleshooting 7.2.1.2 Major Rx Alarms Alarm Possible Cause FPGA CFG Indicates a receive FPGA hardware failure. DSP CFG Indicates a receive DSP failure. SIGNAL LOCK Indicates that the demod is unable to lock to a signal.

  • Page 142: Minor Rx Alarms

    OM20 Universal Outdoor Modem Maintenance and Troubleshooting 7.2.1.4 Minor Rx Alarms Alarm Possible Cause BUFF UNDERFLOW Indicates that a Doppler Buffer underflow has occurred. BUFF NEAR EMPTY Indicates that the Doppler Buffer is about to underflow. BUFF NEAR FULL Indicates that the Doppler Buffer is about to overflow.

  • Page 143: Drop And Insert Alarms

    Displays the measured voltage of the +20 Volt power bus +20V SUPPLY located inside the modem. 7.2.2 Alarm Masks The OM20 performs a high degree of self-monitoring and fault isolation. The alarms for these faults are separated into the following three categories:  Active Alarms ...

  • Page 144: Active Alarms

    OM20 Universal Outdoor Modem Maintenance and Troubleshooting A feature exists that allows the user to ‘Mask’ out certain alarms as explained below. Alarms that are recorded in the event buffer are the same as the alarm buffer. Masking alarms may cause undesirable modem performance.
  • Page 145 Radyne Turbo (Optional) BPSK 21/44 8PSK/16QAM 3/4, 7/8 QPSK 1/2, 3/4, 7/8 (Turbo Supported at all Modulation Types) Outer Encoder Options Reed-Solomon INTELSAT (DVB Optional) Data Clock Source Internal, Rx Recovered Internal Stability 5x 10 Typical MN-OM20– Revision 5 8–1...

  • Page 146: Chapter 8. Technical Specifications

    Clock Transmit, Rx Recovered or SCT (Internal) Monitor and Control Remote RS-485/Terminal RS-232/Ethernet 10 Base-T/Web Browser OM20 Drop and Insert (Optional) Terrestrial Data 1.544 Mbps or 2.048 Mbps, G.732/733 Line Coding AMI or B8ZS for T1 and HDB3 for E1...

  • Page 147: Terrestrial Interfaces

    OM20 Universal Outdoor Modem Technical Specifications Terrestrial Interfaces A variety of standard interfaces are available for the OM20 modem in stand-alone applications. IDR/ESC Interface (Optional) G.703 T1 (DSX1) 1.544 Mbps, 100-Ohm Balanced, AMI and B8ZS G.703 E2 8.448 Mbps, 75-Ohm BNC, Unbalanced, HDB3...
  • Page 148 OM20 Universal Outdoor Modem Technical Specifications BPSK TPC 21/44 2400 4772727 QPSK NONE 9600 20000000 QPSK VIT 1/2 4800 10000000 QPSK VIT 3/4 7200 15000000 QPSK VIT 7/8 8400 17500000 QPSK SEQ 1/2 4800 2048000 QPSK SEQ 3/4 7200 2048000...

  • Page 149: Dvb

    OM20 Universal Outdoor Modem Technical Specifications 8.12.2 DVB 187 Mode Modulation Code Rate Min Data Rate Max Data Rate BPSK VIT 1/2 2400 4583333 BPSK VIT 2/3 2934 6111111 BPSK VIT 3/4 3300 6875000 BPSK VIT 5/6 3667 7638888 BPSK...
  • Page 150 OM20 Universal Outdoor Modem Technical Specifications 16QAM TRE 3/4 13271 20000000 16QAM TRE 7/8 15483 20000000 204 Mode Modulation Code Rate Min Data Rate Max Data Rate BPSK VIT 1/2 2400 5000000 BPSK VIT 2/3 3200 6666666 BPSK VIT 3/4...

  • Page 151: Om20 / Ber Specifications

    1E-6 Specification 1/2 Rate 1E-7 Specification 3/4 Rate 1E-8 Specification 7/8 Rate 1E-9 Eb/No in dB Note: Eb/No values include the effect of using Differential Decoding and V.35 descrambling. Figure 8-1. OM20 B/O/QPSK BER Performance (Viterbi) MN-OM20– Revision 5 8–7...

  • Page 152: Ber Performance (Sequential)

    1E-6 Specification 1/2 Rate Specification 1E-7 3/4 Rate Specification 1E-8 7/8 Rate 1E-9 Eb/No in dB Note: Eb/No values include the effect of using Differential Decoding and V.35 descrambling. Figure 8-2. OM20 B/O/QPSK BER Performance (Sequential) MN-OM20– Revision 5 8–8...

  • Page 153: Ber Performance (Viterbi With Reed-Solomon)

    Typical Performance 1E-3 1E-4 1E-5 Specification 1/2 Rate 1E-6 Specification 1E-7 3/4 Rate 1E-8 1E-9 Eb/No in dB Note: Eb/No values include the effect of using Differential Decoding. Figure 8-3. OM20 B/O/QPSK BER Performance (Viterbi w/R-S) MN-OM20– Revision 5 8–9...

  • Page 154: Ber Performance (8Psk Trellis)

    1E-4 1E-5 1E-6 Specification 2/3 Rate 1E-7 Specification 2/3 Rate w/RS 1E-8 1E-9 Eb/No in dB Note: Eb/No values include the effect of using Differential Decoding and V.35 Descrambling. Figure 8-4. OM20 8PSK BER Performance (Trellis) MN-OM20– Revision 5 8–10...

  • Page 155: Ber Performance (16Qam Viterbi)

    1E-3 1E-4 1E-5 1E-6 Specification 3/4 Rate 1E-7 Specification 7/8 Rate 1E-8 1E-9 Eb/No in dB Note: Eb/No values include the effect of using Differential Decoding and V.35 Descrambling. Figure 8-5. OM20 16QAM BER Performance (Viterbi) MN-OM20– Revision 5 8–11...

  • Page 156: Ber Performance (16Qam Viterbi With Reed-Solomon)

    1E-3 1E-4 1E-5 1E-6 Specification 3/4 Rate w/RS 1E-7 Specification 7/8 Rate w/RS 1E-8 1E-9 Eb/No in dB Note: Eb/No values include the effect of using Differential Decoding. Figure 8-6. OM20 16QAM BER Performance (Viterbi w/R-S) MN-OM20– Revision 5 8–12...

  • Page 157: Ber Performance ((O)Qpsk Turbo)

    8.13.7 BER Performance ((O)QPSK Turbo) 1E-1 B/O/QPSK Uncoded Theory 1E-2 Turbo Decoder Specification Turbo 3/4 1E-3 1E-4 Specification Specification Turbo 1/2 Turbo 7/8 1E-5 1E-6 1E-7 Typical Performance 1E-8 1E-9 Eb/No in dB Figure 8-7. OM20 (O)QPSK BER Performance (Turbo) MN-OM20– Revision 5 8–13...

  • Page 158: Ber Performance (8Psk Turbo)

    8.13.8 BER Performance (8PSK Turbo) 1E-1 8PSK Uncoded Theory 1E-2 Turbo Decoder Specification Turbo 3/4 1E-3 Specification Turbo 7/8 1E-4 Typical Performance 1E-5 1E-6 1E-7 1E-8 1E-9 Eb/No in dB Figure 8-8. OM20 8PSK BER Performance (Turbo) MN-OM20– Revision 5 8–14...

  • Page 159: Ber Performance (16Qam Turbo)

    8.13.9 BER Performance (16QAM Turbo) 1E-1 16QAM Uncoded Theory 1E-2 Turbo Decoder Specification Turbo 3/4 1E-3 Specification Turbo 7/8 1E-4 Typical Performance 1E-5 1E-6 1E-7 1E-8 1E-9 Eb/No in dB Figure 8-9. OM20 16QAM BER Performance (Turbo) MN-OM20– Revision 5 8–15...
  • Page 160 OM20 Universal Outdoor Modem Technical Specifications Table 8-1 - B/O/QPSK BER Performance (Viterbi) Specification Typical 1/2 Rate 3/4 Rate 7/8 Rate 1/2 Rate 3/4 Rate 7/8 Rate 1E-3 4.2 dB 5.3 dB 6.2 dB 3.9 dB 4.9 dB 5.8 dB 1E-4 4.8 dB...
  • Page 161 OM20 Universal Outdoor Modem Technical Specifications Table 8-4 - 8PSK BER Performance (Trellis) Specification Typical 2/3 Rate 2/3 Rate w/RS 2/3 Rate 2/3 Rate w/RS 1E-3 6.2 dB 5.2 dB 4.8 dB 4.9 dB 1E-4 7 dB 5.5 dB 5.6 dB 5.1 dB...
  • Page 162 OM20 Universal Outdoor Modem Technical Specifications Table 8-7 - (O)QPSK BER Performance (Turbo) Specification Typical Turbo 1/2 Turbo 3/4 Turbo 7/8 Turbo 1/2 Turbo 3/4 Turbo 7/8 1E-3 3.2 dB 4 dB 2.8 dB 3.7 dB 1E-4 3.4 dB 4.1 dB 3 dB 3.8 dB...

  • Page 163: Input Level

    OM20 Universal Outdoor Modem Technical Specifications 8.13.10 Input Level Refer to Figure 8-10 for the OM20 power threshold limits. Figure 8-10 Demodulator Input Level Specification MN-OM20– Revision 5 8–19...
  • Page 164 OM20 Universal Outdoor Modem Technical Specifications Notes: MN-OM20– Revision 5 8–20...

  • Page 165: Appendix A. Product Options

    The OM20 can be equipped with a G.703/IDR ESC Interface. Factory installed option A.1.2 Turbo Card The OM20 can be equipped with an optional Turbo Codec Outer Code. This option must be installed at the factory and may require other options. Factory upgrade only.

  • Page 166: Customized Options

    OM20 Universal Outdoor Modem Appendix A Customized Options The OM20 may be customized for specific customer requirements. Most modifications or customization can be accomplished by means of firmware/software modifications. The following are examples of the types of customization available to the user: ...

  • Page 167: Appendix B. Software Upgrade Procedure

    The outdoor modem software may be upgraded via the terminal or the web interface. Terminal Software Upgrade The OM20 Outdoor Modem offers the ability to perform field upgrades of the modem’s feature set quickly and easily from the Terminal Port. Purchased upgrades will become part of the modems permanent configuration.
  • Page 168 OM20 Universal Outdoor Modem Appendix B The value displayed on the top line of this menu is the 12-digit Unit ID. It is displayed as 3 sets of 4 digits in a dot-delineated format as follows: 1 2 3 4 . 1 2 3 4 . 1 2 3 4 Your Comtech EF Data Sales Representative will ask you for this number along with your desired feature set upgrades when placing your order.

  • Page 169: Demonstration Procedure

    Appendix B Demonstration Procedure The procedure for enabling a 30-day demo of the OM20 options is similar to the procedure used for permanently updating the modems feature set. The one big difference being that at the end of 30 days, the demo features will automatically be disabled and the modem will revert back to its permanent configuration.

  • Page 170: Canceling Demonstration Mode

    4 digits in a dot-delineated format as follows: 1 2 3 4 . 1 2 3 4 . 1 2 3 4 Your Radyne Sales Representative will ask you for this number along with the features you wish to demo.

  • Page 171: Web Browser Software Upgrade

    OM20 Universal Outdoor Modem Appendix B Web Browser Software Upgrade Monitor and Control All modem settings can be monitored and controlled through the browser based on the user access rights. The goal is an easy-to-use navigation scheme that would enable users to view current modem status and easily access the modem’s controls.
  • Page 172 Key Code Required Call customer service. Feature is enabled for customer use, but the OM20 hardware required has not been detected or has failed. Features upgrades can also be implemented through the Web Browser interface. MN-OM20– Revision 5 B–6...

  • Page 173: Appendix C. Carrier Control

    Appendix C. Carrier Control States The OM20 transmitter will turn off the carrier output automatically when the modem determines there is a major alarm. This is done to prevent the carrier from outputting an unknown spectrum and possibly disturbing adjacent carriers. This automatic drop of the carrier can be overridden by masking the alarm that is causing the fault.

  • Page 174: Carrier Auto

    OM20 Universal Outdoor Modem Appendix C Carrier Auto Modulator output is turned off before reprogramming modulator functions that may alter the output spectrum through the front panel, but the output is automatically turned on after the change. When using the terminal, the modulator is turned off while re-programming modulator functions that may alter the output spectrum, and but the output is automatically turned on after the change.

  • Page 175: Appendix D. Quick Start Guide

    Computer  Default Plug (J2) IMPORTANT The Web Browser menus for the OM20 can only be accessed utilizing Microsoft Internet Explorer 6 or greater. Web Interface Setup Guidelines D.3.1 Preparing the OM-20 for Web Setup The unit is shipped from the factory with specific IP defaults. The factory defaults are set to an unreachable state to minimize any adverse effects to the user’s network.
  • Page 176 OM20 Universal Outdoor Modem Appendix D 1. Turn off power to the OM-20. 2. Install the Reset mating connector on J2 port. 3. Turn on power to the OM-20 and allow it to run for 2 minutes. 4. Turn off power to OM-20 and remover the Reset mating connector from J2.
  • Page 177 Figure 3. No special access is required. General information on the modem, features, capabilities, and available options are listed. Complete technical specifications and product options are also available in a PDF format. Links to the Radyne Corporation website and Customer service are also accessible.

  • Page 178: Ip Network Change From The Initial Web Setup

    OM20 Universal Outdoor Modem Appendix D 11. To navigate other parts of the site, the modem needs to know who the user is. Upon selecting any of the commands, the modem will request an authentication from the user. This authentication is done through the use of a username and secret password.

  • Page 179: Configuring The Computer

    OM20 Universal Outdoor Modem Appendix D 1. Configure the modem first with the new subnet addresses. From the modem introduction page, click the IP ADMINISTRATION tab located on the top of the screen. 2. Enter your username and password on the logon popup, and then press the Enter key.

  • Page 180: Web Users Setup And Configurations Controls Options

    OM20 Universal Outdoor Modem Appendix D have the same subnet mask. This field should be set after the changes are made to the Modem. Refer to Figure 6. 1. Configure the computer with the new subnet addresses. 2. Initiate PING test to ensure there is communication between the modem and the computer Example: ping 192.168.0.238...
  • Page 181 OM20 Universal Outdoor Modem Appendix D 3. Select USER1, USER2, or USER3 from the drop down Edit User menu. The corresponding username and access rights will get updated on the screen. 4. Select a new username if desired, and password. Confirm the new password then click on the Save button.

  • Page 182: Change Authentication Password

    OM20 Universal Outdoor Modem Appendix D D.5.1 Change Authentication Password The user can modify the Authorization Passwords. The user name can have up to 14 characters supporting alpha and numeric characters. Alpha characters can be entered using the up and down arrow keys.

  • Page 183: Appendix E. Drop & Insert (D&I

    G.704 Frame. The modified terrestrial trunk is then output via the Insert Data Out (IDO) RD Port J11. The OM20 is not capable of daisy chaining two units together as all loop timing is done internally to the OM20.

  • Page 184: Drop Only

    Appendix E Drop Only When Drop is enabled and Insert is disabled, the OM20 performs a drop-only function. Framed E1 or T1 Data is input via the Send Data In Port, the selected timeslots are dropped into the IBS frame structure. (Refer to Figure 3-9).

  • Page 185: Mode Selection

    Figure 3-11. Insert Only with Internal Frame Source Mode Selection The OM20 D&I can be easily configured to support several commonly used terrestrial data formats. For E1 Data, the user can choose between PCM-30, PCM-30C, PCM-31 and PCM-31C. For T1 Data, the user can choose between T1-D4, T1-ESF, and SLC-96. The following paragraphs provide more information on the various mode selection capabilities of the OM20.

  • Page 186: Pcm-31C

    = 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, or 30. In the OM20, Robbed Bit Signaling (RBS) is handled without any need for operator intervention and is transparent to the user.

  • Page 187: Drop And Insert Mapping

    OM20 Universal Outdoor Modem Appendix E Figure E-1. Multidestinational Communications Drop and Insert Mapping The following displays under Interface D&I Setup (both Tx and Rx), are editing displays only: SATCh TS Enter to Edit Any changes made in these displays are made on the screen, but are not entered into the modem.
  • Page 188 OM20 Universal Outdoor Modem Appendix E Assigning Time Slots: Example : For a modem w/ Drop & Insert enabled at a data rate of 256kb (with timeslots assigned 1 - 1, 2 - 2, etc.). At a data rate of 256kb, the modem will allow 4 channels to assign timeslots (Nx64kb).

  • Page 189: Configuring The Om20 For Drop And Insert

    For example: timeslots may be assigned 1 - 2, 2 - 5, etc. but not 1 - 5, 2 - 2. Configuring the OM20 for Drop and Insert Several dependencies exist when configuring the modem for Drop and Insert (D&I). The following paragraphs explain these dependencies and provide the user with the information required to ensure smooth transition into D&I and to minimize the potential impact of these...

  • Page 190: Operational Network Specification

    OM20 Universal Outdoor Modem Appendix E n = 1, data rate = 64000 n = 2, data rate = 128000 n = 3, data rate = 192000 n = 4, data rate = 256000 n = 5, data rate = 320000...

  • Page 191: Insert Terrestrial Frame Source

    External and the Buffer Clock will automatically be set to External. E.7.4 D&I Sample Configurations and D&I Clock Setup Options The following are several examples of how to configure the modem for D&I. The OM20’s DDO and IDI are internally looped...
  • Page 192 OM20 Universal Outdoor Modem Appendix E Under Interface: Under TX Setup: Set Tx Clock = SCTE Under Tx D&I: Set Drop Mode = T1-D4 Use SATCh TS edit capability to define desired mapping of Satellite Channels to drop Terrestrial Slots...
  • Page 193 OM20 Universal Outdoor Modem Appendix E Under Demodulator: Under Demod Data: Set Data Rate = 1536000 Set Conv Enc = 3/4 Rate VIT Under Demodulator: Set Network Spec. = Drop & Insert Under Interface: Under RX Setup: Set Buff Size to desired depth Under Rx D&I:...

  • Page 194: D&I Maps And Map Editing

    Maps always contain 30 entries, although, only the first “n” entries are relevant (see Table 4-10). The OM20 includes provisions to copy, change, and store the D&I transmit and receive maps directly from the Front Panel or via the remote M&C link. These maps are tables that are used to define and configure the D&I functions.
  • Page 195 OM20 Universal Outdoor Modem Appendix E ROM maps are read-only and may not be modified (refer to Table E-2). Table E-2. D&I ROM Maps T1/E1 Time Slot 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30...
  • Page 196 OM20 Universal Outdoor Modem Appendix E The following paragraphs give examples of typical configurations that could use the ROM Maps as templates. The ROM Map used would have to be first copied to the appropriate Active Transmit (Drop) and/or Active Receive (Insert) Map(s) before it could be used. To use a modification of a ROM Map, the ROM Map must first be copied to the appropriate Edit Map, then modified, and then copied to the appropriate Active Map.
  • Page 197 OM20 Universal Outdoor Modem Appendix E from and or inserted into the first eight time slots of the T1 or E1 frame. The Multiplexer would know to look only at the first eight entries in the Active map(s) and would ignore the other 22 entries.
  • Page 198 OM20 Universal Outdoor Modem Appendix E Notes: MN-OM20– Revision 5 E–16...

  • Page 199: Appendix F. Efficient Drop & Insert (D&I

    Interface card installed and Open Network Drop & Insert must be enabled. If you modem does not have the required hardware and/or feature set enabled, you will need to contact your Radyne salesperson to order the appropriate hardware and/or feature set upgrade. If your modem has the appropriate hardware, but the software revision is prior to AY, you will need to download the latest modem firmware from the Radyne FTP website.

  • Page 200: Efficient Drop & Insert Mode

    OM20 Universal Outdoor Modem Appendix F FEATURES UPGRADE LIST D&I INSTALLED required ENH ASYNC INSTALLED optional, required if desired AUPC INSTALLED optional, required if desired Efficient Drop & Insert Mode With Efficient Drop & Insert, the terrestrial interface selections, terrestrial framing modes,...

  • Page 201: Calculating The Required Satellite Bandwidth

    Automatic Uplink Power Control. By comparison, the open network standard requires 4267 bps per slot, so by utilizing Efficient Drop and Insert, Radyne customers can realize a bandwidth savings of over 4000 bps per slot.

  • Page 202: Calculating The Efficient D&I Rate With Enhanced Asynchronous Overhead

    OM20 Universal Outdoor Modem Appendix F F.3.4 Calculating the Efficient D&I Rate with Enhanced Asynchronous Overhead The amount of overhead required to carry the Enhanced Async is driven by the in-band baud rate. The calculation is a two step process involving the in-band baud rate and the number of...
  • Page 203 OM20 Universal Outdoor Modem Appendix F Example 1c: Change to Enhanced Async with In-Band Baud Rate of 1200 X = Truncation of (1200 / (5 * 125) X = Truncation of (1.92) X = 1 Add 1 * 5 * 125 bps to our previous calculation gives 331875 bps...
  • Page 204 OM20 Universal Outdoor Modem Appendix F Notes: MN-OM20– Revision 5 F–6...

  • Page 205: Appendix G. Strap Codes

    Use the Strap Code Guide (Table G-1) for available strap codes. Table G-1. Strap Codes Dis = Disable 16/15 QPSK 16/15 QPSK 16/15 QPSK 16/15 QPSK 16/15 QPSK 16/15 QPSK 1536 16/15 QPSK 1920 16/15 QPSK 2048 16/15 QPSK MN-OM20– Revision 5 G–1...
  • Page 206 OM20 Universal Outdoor Modem Appendix G 2048 16/15 QPSK 1544 V.35 (IESS) QPSK 2048 V.35 (IESS) QPSK 6312 V.35 (IESS) QPSK 8448 V.35 (IESS) QPSK NONE V.35 (IESS) QPSK NONE V.35 (IESS) QPSK NONE V.35 (IESS) QPSK NONE V.35 (IESS)
  • Page 207 OM20 Universal Outdoor Modem Appendix G 6312 NONE V.35 (IESS) QPSK 8448 NONE V.35 (IESS) QPSK 3152 NONE V.35 (IESS) QPSK 3152 NONE V.35 (IESS) QPSK 3264 NONE V.35 (IESS) QPSK 3264 NONE V.35 (IESS) QPSK 16/15 QPSK 1024 V.35 (IESS)
  • Page 208 OM20 Universal Outdoor Modem Appendix G 1152 16/15 QPSK 1216 16/15 QPSK 1216 16/15 QPSK 1280 16/15 QPSK 1280 16/15 QPSK 1344 16/15 QPSK 1408 16/15 QPSK 1408 16/15 QPSK 1472 16/15 QPSK 1472 16/15 QPSK 1600 16/15 QPSK 1600...

  • Page 209: Sample Applications

    OM20 Universal Outdoor Modem Appendix G Sample Applications The following section provides brief application notes for operating the modem and explains by example how to configure the modem for some of the most popular configurations. The following information illustrates the allowable combinations for Mode and Data Rate.
  • Page 210 OM20 Universal Outdoor Modem Appendix G Case 1: IDR 8.448 Mbps, 3/4 Rate Viterbi Starting with the Data Rate = 512 Kbps Modulator: Method 1 - Under Interface Menu: Set Interface type Set Tx clock selection Set mode to IDR...
  • Page 211 OM20 Universal Outdoor Modem Appendix G Case 2: IBS 1.544 Mbps, 3/4 Rate Viterbi Starting with the Data Rate – 512 Kbps Modulator: Method 1 - Under Interface Menu: Set Interface type Set Tx clock selection Set Framing to 1/15...
  • Page 212 OM20 Universal Outdoor Modem Appendix G Case 3: Closed Network, 3/4 Rate Viterbi, IBS Overhead Starting with the Data Rate = 512 Kbps Modulator: Method 1 - Under Interface Menu: Set Interface type Set Tx clock selection Set mode to IDR:...
  • Page 213 OM20 Universal Outdoor Modem Appendix G Case 4: Loop Timing Example Method 1 - Under Interface Menu: Under Tx Setup Menu: Set INTF to RS-422 Set SCT Source to SCR Set Tx Clock to SCTE Set mode to IBS Method 2 -...
  • Page 214 OM20 Universal Outdoor Modem Appendix G Notes: MN-OM20– Revision 5 G–10...

  • Page 215: Appendix H. Aupc Operations

    Radyne AUPC can be set to operate on either or both directions of a link but always require a bi- directional channel. Enabling AUPC on one side of the link will activate AUPC on the distant end of the link.

  • Page 216: Ef Aupc

    OM20 Universal Outdoor Modem Appendix G drop in the remote E , it slowly begins to raise the output power, and will continue to adjust if the remote E continues to drop. As the rain increases in intensity, the remote E decreases but Local modem continues to increase its power level to compensate.
  • Page 217 This nominal power should be set to a level high enough to re-establish communications regardless of rain fade. EF AUPC, also provides some control over the rate of power change; while the Radyne and Near Side AUPC use a optimized rate for rain fade compensation.
  • Page 218 OM20 Universal Outdoor Modem Appendix G Notes: MN-OM20– Revision 5 H–4...

  • Page 219: Metric Conversions

    METRIC CONVERSIONS Units of Length Unit Centimeter Inch Foot Yard Mile Meter Kilometer Millimeter 1 centimeter — 0.3937 0.03281 0.01094 0.01 — — 6.214 x 10 1 inch 2.540 — 0.08333 0.2778 1.578 x 10 0.254 — 25.4 1 foot 30.480 12.0 —...
  • Page 220 2114 85281 WEST TH STREET TEMPE ARIZONA 480 • 333 • 2200 PHONE 480 • 333 • 2161...

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