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.
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.
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Table of Contents TABLE OF CONTENTS............................................................................................................................................. III CHAPTER 1. INTRODUCTION ........................................................................................................................ 1–1 1.0 OVERVIEW ...................................................................................................................................................1–1 1.
Table of Contents OM20 Universal Outdoor Modem Revision 5 MN-OM20 4.5 INTERNAL CLOCK ...........................................................................................................................................4–8 4.6 LOOPBACK FEATURES (TERRESTRIAL & IF)..........................................................................................................4–8 4.7 CLOCKING OPTIONS ...............................................................................................................
Table of Contents OM20 Universal Outdoor Modem Revision 5 MN-OM20 5.1.11 5.1.12 5.1.13 LED Indicators ..................................................................................................................................5–8 G.703 Balanced – Connections are available via the J3 connector. Refer to Table 5.4a. ...............5–8 EXT Reference J12 ............................................................................................................................5–8 CHAPTER 6.
Table of Contents OM20 Universal Outdoor Modem CHAPTER 8. Revision 5 MN-OM20 TECHNICAL SPECIFICATIONS ..................................................................................................... 8–1 8.1 DATA RATES.................................................................................................................................................8–1 8.2 MODULATOR ...........................................................................................................................
Table of Contents OM20 Universal Outdoor Modem C.5 C.6 Revision 5 MN-OM20 CARRIER VSAT ..............................................................................................................................................C–2 CARRIER RTS ...............................................................................................................................................C–2 APPENDIX D. QUICK START GUIDE .....................................................................................
Table of Contents OM20 Universal Outdoor Modem H.1.1 H.1.2 H.1.3 Revision 5 MN-OM20 Radyne AUPC ...................................................................................................................................... H–1 EF AUPC............................................................................................................................................... H–2 Near Side AUPC ........................................................................................................
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.
OM20 Universal Outdoor Modem Preface Revision 5 MN-OM20 Cautions and Warnings IMPORTANT CAUTION IMPORTANT or NOTE indicates a statement associated with the task being performed or information critical for proper equipment function. CAUTION indicates a hazardous situation that, if not avoided, may result in minor or moderate injury. CAUTION may also be used to indicate other unsafe practices or risks of property damage.
OM20 Universal Outdoor Modem Preface Revision 5 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.
OM20 Universal Outdoor Modem Preface Revision 5 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. Repairs are warranted for the remainder of the original two year warranty, or a 90 day extended warranty, whichever is longer.
OM20 Universal Outdoor Modem Preface Revision 5 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.
OM20 Universal Outdoor Modem Preface Revision 5 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: Comtech EF Data Attention: Customer Support Department 2114 West 7th Street Tempe, Arizona 85281 USA 480.333.2200 (Main Comtech EF Data number) 480.333.
Chapter 1. Introduction This chapter provides an overview of the OM20 Outdoor Modem. The OM20 system can support a C-Band with power levels of 2, 5 and 10 watts or Ku-Band with output powers of 2, 4 and 8 watts. Figure 1.1. Outdoor Modem (OM20) without protective shroud 1.0 Overview 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.
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 LBand input frequency (from the LNB), high-stability 10 MHz reference and 13, 15, 18, and 21 volts. The OM20 has the capability to enable and disable the BUC/LNB voltages and 10 MHz reference.
OM20 Universal Outdoor Modem Introduction 1.1.1 Features/Options Installed at Time of Order Features installed at the time of ordering are the options pre-installed/initialized in the factory prior to shipment. Features and options can be reviewed from the GUI or remote port of the OM20. Refer to Section 4, “User Interfaces” for information on how to view these features. Factory installed options are chassis and board configurations that are introduced during manufacture.
OM20 Universal Outdoor Modem Introduction Notes: MN-OM20– Revision 5 1–4
Chapter 2. Installation This document provides unpacking and installation instructions, and a description of external connections. 2.1 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.
OM20 Universal Outdoor Modem Installation CAUTION The OM20 contains a Lithium Battery. DANGER OF EXPLOSION exists if the battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries in accordance with local and national regulations. 2.2 Unpacking 2.2.
OM20 Universal Outdoor Modem 2.3 Installation 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. See the specification section of this document for appropriate voltages and currents.
OM20 Universal Outdoor Modem Installation Figure 2.2a. OM 20 Rear Interconnects (cont) 2.4 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.
OM20 Universal Outdoor Modem 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 Universal Outdoor Modem 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.
OM20 Universal Outdoor Modem 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.
OM20 Universal Outdoor Modem 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.
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.
OM20 Universal Outdoor Modem Installation 2.4.6 OM20 Additional Interface Diagrams RX IF L N B OMT TX RF T PA OU SS RF C/ TX BU IN IF TX TXIF L- BAND 950 – 2050 MHz 10 MHz/+24 VDC SMA J8 TX OUT J7 RX INPUT RXIF L- BAND 950 – 2050 MHz + 18VDC N OM- 20 J4 ENET I/O M&C 38 P J 3 DATA I/O IFL DATA/M&C INTERFACE INDOOR 18 P J2 M&C I/O G. 703 DATA I/O J 10 J 11 OUTDOOR AC PWR J1 3P AC PWR M&C I/O EIA-530 DATA I/O EIA-530 DATA/M&C I/O Figure 2-9.
OM20 Universal Outdoor Modem Installation RX IF L N B OMT RF TX T PA OU SS RF C/ TX BU IN IF TX TXIF L- BAND 950 – 2050 MHz 10 MHz/+24 VDC SMA J8 TX OUT J7 RX INPUT OM- 20 N RXIF L- BAND 950 – 2050 MHz + 18VDC J4 ENET I/O M&C J 3 DATA I/O IFL DATA/M&C INTERFACE INDOOR 18 P J2 M&C I/O ASI DATA I/O J 10 J 11 BNC BNC OUTDOOR ENET DATA/M&C I/O M&C I/ O EIA-530 DATA/M&C I/O ASI DATA TX ASI DATA RX AC PWR J1 3P AC PWR ASI DATA IN ASI DATA OUT Figure 2-11.
OM20 Universal Outdoor Modem Installation Notes: MN-OM20– Revision 5 2–12
Chapter 3. OM20 Initial Configuration 3.1 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. Failure to do so may cause damage to the OM20.
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: QPSK Frequency: 1350 MHz Modulator Output Power: -20 dBm Demodulator: Data Rate: Mode: Satellite Framing: Descrambler: Drop and Insert: Inner FEC: Outer FEC: Modulation: 2.048 Mbps Closed Network None V.
OM20 Universal Outdoor Modem 3.2 OM20 Initial Configuration Initial Configuration and Setup Process The following descriptions assume that the OM20 is installed in a suitable location with prime AC power and supporting equipment available. CAUTION Before initial power up of the OM20, it is a good idea to disconnect the transmit output from the operating ground station equipment and terminate the port into a properly sized load.
OM20 Universal Outdoor Modem OM20 Initial Configuration IMPORTANT Resetting IP Address & Terminal to Default/Reset Mode If the unit should lockup or lose communication during the initialization process, the unit remote interface can be reset using the supplied reset mating connector. By installing the connector on J2 and cycling power, the unit communication parameters will be reset to the factory test settings. Refer to Section D for Quick Set-Up Guide. 3.
OM20 Universal Outdoor Modem OM20 Initial Configuration 3.3.2 RX Input Verification Test Connect a Spectrum Analyzer and Bias-T to the RXRF L-Band Output of the LNB. Ensure that the Antenna is correctly tuned and that the carrier of interest is visible and that the frequency and power level is correct. 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.
OM20 Universal Outdoor Modem OM20 Initial Configuration Notes: MN-OM20– Revision 5 3–6
Chapter 4. OM20 Theory of Operation 4.1 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.
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.
OM20 Universal Outdoor Modem OM20 Theory of Operation 4.1.2 OM20 Baseband Processing Printed Circuit Card The advent of million-plus gate count FPGAs, advanced logic synthesis tools, and DSPs providing hundreds of MIPs enabled the design of a software configurable modem. Large, fast FPGAs now provide designers with what is essentially an on the fly programmable ASIC.
OM20 Universal Outdoor Modem 4.2 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 The Baseband Processor performs all of the functions required for an IBS/IDR Framing Unit, a Reed-Solomon Codec, and an E1/T1 Drop and Insert System.
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. In IDR, IBS, and D&I Modes, the framer adds the appropriate framing and ESC as defined in IESS-308 and 309. In D&I Mode, the framer acquires the terrestrial framing structure, E1 or T1, and synchronizes the Drop Processor.
OM20 Universal Outdoor Modem 4.3 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. The M&C processes this information and generates status indications as well as alarms when necessary.
OM20 Universal Outdoor Modem OM20 Theory of Operation 4.3.1 Terminal Port This port supports an asynchronous control protocol as described in Section 4. It is configured to support RS-232 signal levels. This port is intended for use in computer-based remote M&C. All functions of the modem may be monitored and controlled from this port via a common terminal connected to the Terminal Port. This function is front panel selectable.
OM20 Universal Outdoor Modem OM20 Theory of Operation 4.3.4 Modem Monitor Status The modems M&C system is connected to most of the circuitry on any board contained in the chassis. 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. The M&C processes this information and generates status indications as well as alarms when necessary.
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. (prior to the framing unit) RX Baseband Loopback - Receive Data from the satellite is looped back for retransmission to the satellite, providing a far end loopback.
OM20 Universal Outdoor Modem OM20 Theory of Operation Figure 4-4.
OM20 Universal Outdoor Modem OM20 Theory of Operation Figure 4-5. Loopback Functional Block Diagram Figure 4-6.
OM20 Universal Outdoor Modem 4.7 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. Tx and Rx Clocks may be independently locked. INVERT NONE INV .
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.
OM20 Universal Outdoor Modem OM20 Theory of Operation SCT (Internal Oscillator) EXC Clock/EXT BNC (External Clock Source) EXT IDI (Drop and Insert) The modem handles RX Buffer clock selections based on source priority levels. The user assigns priorities to the clock sources based on source selections. Source 1 has the highest priority and Source 5 being the last resort or lowest priority.
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.
OM20 Universal Outdoor Modem 4.9 OM20 Theory of Operation Reed-Solomon Codec Utilizing a Reed-Solomon (R-S) Outer Codec concatenated with a Convolutional Inner Codec is an effective way to produce very low error rates even for poor signal-to-noise ratios while requiring only a small increase in transmission bandwidth. Typically, concatenating an R-S Codec requires an increase in transmission bandwidth of only 9 – 12% while producing a greater than 2 dB improvement in Eb/No.
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 Service Data Rate (Kbps) R-S Code (n, k, t) 1 Bandwidth Expansion [ (n/k) -1 ] Interleaving Depth Maximum 2 R-S Codec Delay (ms) Small IDR (With 16/15 O/H) 64 (126, 112, 7) 0.125 4 115 128 (126, 112, 7) 0.125 4 58 256 (126, 112, 7) 0.125 4 29 384 (126, 112, 7) 0.125 4 19 512 (126, 112, 7) 0.125 4 15 768 (126, 112, 7) 0.
OM20 Universal Outdoor Modem 4.11 OM20 Theory of Operation 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. The overhead channel is recovered at the far end.
OM20 Universal Outdoor Modem OM20 Theory of Operation 1536 768 576 9600 1664 832 640 19200 1792 896 704 19200 1920 960 768 19200 1920 960 768 19200 2048 1024 832 19200 896 19200 960 19200 1024 19200 1088 19200 1152 19200 1216 19200 1280 19200 1344 19200 1408 19200 1472 19200 1536 19200 1600 19200 1664 19200 1728 19200 1792 19200 1856 19200 1920 19200 1984 19200 2048 19200 4.
OM20 Universal Outdoor Modem OM20 Theory of Operation Bit 2 Frame Alignment Part of the Frame Alignment word. Bit 3 Backward Alarm Transmit and Receive with main processor to activate Main Alarm/LED. Bit 4 Multiframe Message As per IBS. Bits 5 and 6 Spare Not currently utilized. Bits 7 and 8 Encryption Utilization Not currently utilized. The ratio of the Through Terrestrial Data Channel Rate to the aggregate rate is 15/16.
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). These alarms are accessed via the ESC ALARMS Port.
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. 4.16 Satellite Control Channel (SCC) The SCC format uses a variable overhead rate to transmit an asynchronous data channel in addition to the normal data channel. The SCC asynchronous mode implemented on the DMD20 is "PassThru" Mode.
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: User Data Rate + In-Band Rate + Synchronizing Overhead Rate Because SCC must adjust the overhead so that there are an equal number of user data bits in each slot, the synchronizing overhead cannot be easily calculated.
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. This gives SCC the advantage of lower overhead rates when compared to IBS, which has a fixed overhead ratio of 16/15 or 1.067.
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 Example 2: User Data Rate: 6,312,000 bps In-Band Rate: 19,200 bps Control Ratio: 1 to 7 4.16.5 SCC Overhead Channel Setup 1.
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. ES BITS/CHAR {7,8} ii. This allows the user to choose between 7 or 8 bits of data. 8. Repeat Steps 4 through 7 under the RX ASYNC MODE (menu) 9. The physical connection to the overhead channel will be the DB-9 Female Port labeled ASYNC (J17).
OM20 Universal Outdoor Modem 4.17 OM20 Theory of Operation EDMAC Satellite Framing/Deframing Mode The modem supports EDMAC satellite framing. EDMAC can be enables for both modulator and demodulator satellite framing when modem is configured in CLOSED NET applications. EDMAC satellite framing DOES NOT allow control or monitoring of the remote slave modem. On the demodulator, terrestrial date is framed with NULL EDMAC commands, having no effect at the remote demodulator.
OM20 Universal Outdoor Modem OM20 Theory of Operation Notes: MN-OM20– Revision 5 4–28
Chapter 5. Rear Panel Interfaces This section discusses the electrical interfaces available of the unit. 5.1 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). Refer to Table 5.1 and Figure 5-1 for the standard unit. Reference throughout this section will be identified as the OM20.
OM20 Universal Outdoor Modem Rear Panel Interfaces Figure 5-1. OM20 Front panel ports Figure 5-1A.
OM20 Universal Outdoor Modem Rear Panel Interfaces 5.1.1 Power Input 5.1.1.1 AC Power Input (J1) AC Input is located on connector J1 of the OM20. The auto-ranging universal power supply input allows for the connection of AC power to the port between the range of 100 – 240 VAC and 50 – 60 Hz. Power consumption for the unit is 1A (OM20) only. For the OM20, add the applicable BUC current draw to the OM20 current draw to insure that sufficient current is available for the system.
OM20 Universal Outdoor Modem Rear Panel Interfaces configuration is available on the OM20 GUI. Refer to Table 5.3 for the Remote/Terminal connector pinout; and 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.
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 (RS422/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. Cable lengths up to 60 meters can be used depending on data rate, interface type, and temperature de-rating.
OM20 Universal Outdoor Modem Rear Panel Interfaces 23 Send Timing B (+) 24 No Connect 25 Clear To Send B (+) ST-B Output 12 --- --- 25 CS-B Output 13 Table 5.4.cont. EIA-530 Synchronous Data I/O; ES-ES Async Data Connector (J3) J3 Pin No. Signal Name Signal Direction EIA-530 Std.
OM20 Universal Outdoor Modem Rear Panel Interfaces Use of an extended temperature CAT-5 cable such as is recommended for the Ethernet 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.
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. 5.1.10 RD (J11) (Optional) Based on unit configuration, this connector is used for either G.703 Unbalanced Receive Data (Insert Data Out), or for ASI data out depending on the optional interface ordered.
Chapter 6. Web Browser/Remote Protocol 6.1 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. 6.2 Configuring Your PC An example of a GUI layout is shown in Figure 6-1, showing the location and labeling of the Interface.
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.
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. These typically correspond to the front panel sub-menus, but some areas have been combined. Below the navigation menus, a content page will show the current control scope.
OM20 Universal Outdoor Modem 6 Web Browser/Remote Protocol Product Information Contact Information Access to technical trouble-shooting, product options and specifications is accomplished by selecting one and clicking on that function. Contact Radyne via Email by clicking on “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.
OM20 Universal Outdoor Modem 6.3 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.
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. Access these areas for further detailed description of the selection. Figure 6.2.
OM20 Universal Outdoor Modem 6.3.1.1 Web Browser/Remote Protocol 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” and the default password is “admin”). For further information on setting user profiles see Section 6.2.3 IP and Application Administration Menu.
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. Access Menu Edit User {USER 1, USER 2, USER 3} Allows the operator to assign the applicable user group. User Access Group {Guest, Operator, Admin} Allows the operator to assign the applicable user Access Level group.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol Preferences Menu Figure 6-5. Modem Preferences menu User Confirmation: MN-OM20– Revision 5 {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.
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} Default: All of the following parameters as shown in Table 6-3 through 6-8 will be set and will not change until the boot mode is changed. IP IPMASK: 255.000.000.000 MODEM IPADDR: 010.000.000.
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. However, instead of the IP addresses being set to an unreadable address, it will be set as follows as shown in Table 6-4: IP TEST IP ADDRESS MASK: MODEM IP ADDRESS: SERVER IP ADDRESS ROUTER IP ADDRESS: 255.255.255.0 192.168.000.238 192.168.000.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol 6.3.3.2Configuring Applications Figure 6-7.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol SNMP SNMP VERSION: V1 & V2 TRAP VERSION: V1 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 ACCESS GROUP ACCESS GROUP VIEWER VIEWER OPER OPER AUTH PASSWORD AUTH PASSWORD AUTH PASSWORD AUTH PASSWORD Viewer Viewer Oper Oper PRIV PASSWORD PRIV PASSWORD PRIV PASSWORD PRIV PASSWORD Viewer Viewer Oper Oper AUTH
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. BOOTP: At boot time, use Bootp Protocol to get names, masks, and IP Addresses of the modem, router, and server.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol Configuring the PC Figure 6-8.
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. Stop on the desired tab move the cursor down and then across to the desired function.
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. The following parameters are set and cannot be changed while the unit is in the given mode of operation: IDR: (IESS-308) For Data rates 1.544, 2.048, 6.312, 8.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol Data Rate Inner Code Rate Satellite Framing Scrambler Drop and Insert Outer Code Rate (Reed-Solomon) Modulation Network Spec Frequency (MHz): Allows the user to enter the Modulator IF Output Frequency of the modem in 1 Hz increments. 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.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol Data Menu Figure 6-10. Data Menu Data Rate (bps): {Refer to Technical Specs for Data Rates} Allows the user to set the Data Rate in bps steps. Symbol Rate (sps): Allows the user to view the Symbol Rate. INNER FEC Viterbi Optional FEC Rates: Sequential Trellis 8PSK Turbo ≤ 5 Mbps Turbo ≤ 20Mbps Comstream Seq DVB VIT DVB Trellis {1/2, 3/4, 7/8, None} {1/2, 3/4, 7/8} {2/3} {.793, .
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, V.35EF_RS, TPC, DVB, EDMAC} Allows the user to select the descrambler type.
OM20 Universal Outdoor Modem Async Inband Rate: Web Browser/Remote Protocol {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 – 115200} For SCC Communications Reed-Solomon Menu These selections are active only when the Reed-Solomon Option is installed. Figure 6-11.
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). NOTE: When utilizing BUC that supports FSK, the modem will display LO frequency as stated by the BUC.
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. Low Alarm Thrsh (Volts) This menu allows the user to establish the lower voltage threshold limit of the BUC. If voltage falls below this limit, an alarm will flash.
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. This feature enables the DMD20LBST to retrieve and display certain BUC parameters on the front panel of the modem. AMPLUS: Enables the FSK communication link for AMPLUS BUCs only.
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. Figure 6-13. Aupc Menu Local Mode: The 'LOCAL AUPC CONFIGURATION' Menu contains the local configuration parameters for the AUPC Function.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol EFDATA: Enables EFDATA Local AUPC Function. In the event that the remote or local demodulator losses lock, the output power level will adjust itself to the level settings indicated in the '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.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol NEARSIDE: When configured for NEARSIDE AUPC the maximum Transmit Power is the highest power setting that will be used by the local modem when the Eb/No decreases below the Eb/No target. TARGET Eb/No {4.0 to 16 dB} This allows the user to set the desired Eb/No for the local receiver.
OM20 Universal Outdoor Modem AUPC MODE Web Browser/Remote Protocol {DISABLE,NEAR SIDE, EFDATA} Allows the user to enable or disable the AUPC Function of the remote modem. The remote AUPC Function is the response of the local modem to commands for an increase or decrease of the Transmit Power in 0.5 dB steps and the command to change to the setting indicated in the 'REMOTE CL ACTION' Menu of the remote modem upon receiver loss of lock.
OM20 Universal Outdoor Modem 6.3.4.2 Web Browser/Remote Protocol 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. The Mode Command sets a number of parameters within the modem to meet a set specification. The purpose is to eliminate keystrokes and potential compatibility problems.
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.
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. The DOWNLINK FREQUENCY is a calculated measurement of both the LNB LO and OSC SIDE BAND. Once the menus are entered correctly, the user can control the downlink Frequency from this menu.
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. Carrier Input Level Limit: {-30 to 90 dBm} Allows the user to adjust the low level threshold limit for input power.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol Data Rate (bps): {Refer to Technical Specs for Data Rates} Allows the user to set the Data Rate in bps steps via the Front Panel Arrows or Keypad. Symbol Rate (sps): Allows the user to view the Symbol Rate. INNER FEC Viterbi Optional FEC Rates: Sequential Trellis 8PSK Turbo ≤ 5 Mbps Turbo ≤ 20Mbps Comstream Seq DVB VIT DVB Trellis {1/2, 3/4, 7/8, None} {1/2, 3/4, 7/8} {2/3} {.793, .
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 Rx Satellite Framing Allows the user to simulate the framing used by the Satellite Control Channel Option (Pass Thru Mode only). The SCC CTL RATIO is the ratio of overhead in-band data to synchronizing words.
OM20 Universal Outdoor Modem ReedSolomon Control: Web Browser/Remote Protocol {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. RS K Value: {Refer to Table 3-1 for valid n/k values} Displays the currently used K value, Reed-Solomon Codes.
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. If the LNB LO is higher in frequency then the user must enter HIGH SIDEBAND. 10 MHz LNB Reference: LNB Voltage {ENABLED, DISABLED} Allows the user to enable or disable the 10 MHz BUC reference clock.
OM20 Universal Outdoor Modem 6.3.4.3 Web Browser/Remote Protocol 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. Terrestrial Interface: {RS422 SERIAL, G.703 E2, G.703 T2 BAL, G.703 T2 UNBAL, G.703 E1 BAL, G.703 E1 UNBAL, G.703 T1 AMI, G.703 T1 B8ZS, V.35, ASI, ETHERNET} Allows the user to select the Transmit Type. Terr.
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: {AUTO, NORMAL, INVERTED} Allows the user to select the Clock Polarity for the SCT Clock relative to the Tx Data. “Auto” detects wrong polarity and automatically corrects. If G.703 Interface is selected, this selection cannot be changed. Esc Ch.
OM20 Universal Outdoor Modem ES Baud Rate: Web Browser/Remote Protocol {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. Available rates are 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. ES Bits/Char: DROP MAP {7,8} Allows the user to choose between 7 or 8 bit data.
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 Byte output = continuous Packet output = burst Terrestrial Interface: {RS422 SERIAL, G.703 T2 UNBAL, G.703 E1 BAL, G.703 E1 UNBAL, G.703 T1 AMI, G.703 T1 B8ZS, V.
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. If G.703 Interface is selected, this selection cannot be changed. Number of Buffer Sources: {1 – 5} Allows the user to select up to 5 clock sources.
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. ES Bits/Char: INSERT MAP Insert Mode: Submit Map: {7,8} Allows the user to choose between 7 or 8 bit data. The Insert Map displays the current programmed Rx Insert map for the modem.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol General Menu Figure 6-20. General Menu External Frequency (MHz): Reference Frequency Source: {Variable Through Data Rate} Allows the user to select the external clock frequency in MHz.
OM20 Universal Outdoor Modem 6.3.4.4 Web Browser/Remote Protocol 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. Rx Input Level (dBm): Displays the estimated receive signal level as seen by the Demodulator. This window is active continuously and is above the Gel Tab area.
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 (10 E-9, 10-10 or 10-11). At some symbol rates, a better than scale reading will appear as 0.0 x 10-00. At other symbol rates, it will appear as E**. In either case, they both mean performance is better than the scale upper limit.
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). Error Packets: Displays the number of erred Ethernet packets received from the satellite (Only visible when Ethernet is selected as the interface type).
OM20 Universal Outdoor Modem Web Browser/Remote Protocol IMPORTANT The status of the following ports may be one of the following: Down: Unresolved: 10 Mbps Half: 10 Mbps Full: 100 Mbps Half: 100 Mbps Full: PORT 1 STATUS The link is down. Unable to agree on connection speed. Connected at 10 Base-T Half Duplex. Connected at 10 Base-T Full Duplex. Connected at 100 Base-T Half Duplex. Connected at 100 Base-T Full Duplex. {See the note above} Displays the current status of LAN Port 1.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol Event Menu Figure 6-23. Event Menu Delete All: Cleans the entire event buffer. Event Type: I Informational Y Yellow alarm. Indicates a transmit or receive warning condition. R Red alarm. Indicates a transmit or receive failure, losing traffic. IMPORTANT The Event Buffer may be sorted by warning level, time, date, or event description. This feature may be used to further investigate event occurrences.
OM20 Universal Outdoor Modem 6.3.4.5 Web Browser/Remote Protocol 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. This alarm will flash on during certain modem parameter changes.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol solid indication points toward a problem with the incoming clock to the modem (SCTE). LB Synth PLL: {Pass/Fail, Unmasked/Masked} Indicates that the Tx L-Band Synthesizer is not locked. This alarm will flash on during certain modem parameter changes. A solid indication points toward a configuration problem within the modem.
OM20 Universal Outdoor Modem FORCE ALARM TEST: Web Browser/Remote Protocol 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. Signal Lock: {Pass/Fail, Unmasked/Masked} Indicates that the demod is unable to lock to a signal.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol This alarm will flash on during certain modem parameter changes. A solid indication points toward a problem with the incoming clock to the modem (SCTE). LB Synth PLL: {Pass/Fail, Unmasked/Masked} Indicates that the Rx L-Band Synthesizer is not locked. This alarm will flash on during certain modem parameter changes. A solid indication points toward a configuration problem within the modem.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol Indicates if the Circular Redundancy Check is passing in PCM30C 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: {Pass/Fail, Unmasked/Masked} Indicates that the Framing Unit is unable to find the expected framing pattern. OFEC Lock : {Pass/Fail, Unmasked/Masked} Indicates that the Reed-Solomon Decoder is not locked.
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. ExtClk Activity: {Pass/Fail, Unmasked/Masked} Indicates External Clock Activity failure.
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. +3.3V Supply {Pass/Fail, Unmasked/Masked} Displays the measured voltage of the +3.3 Volt power bus located inside the modem.
OM20 Universal Outdoor Modem 6.3.4.6 Web Browser/Remote Protocol 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: {150, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200} Allows the user to enter the terminal baud rate. Multidrop Address: {32 - 255} Allows the user to enter the Remote Port Multidrop Address.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol HW/FW Configuration Menu Figure 6-28. HW/FW Configuration Menu Firmware Revision: Displays the installed firmware revision. M&C Revision: 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.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol Features Menu Figure 6-29. Features Menu The Web Browser menu allows viewing of actively enabled features. Each feature displays a series of symbols that describe feature status. The following symbols indicate: Installed No hardware available. Requires hardware for upgrade. Feature is in Demo Mode and will expire. Key Code Required Call customer service.
OM20 Universal Outdoor Modem 6.3.4.7 Web Browser/Remote Protocol 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. Rx Test Pattern: {NONE, 2047, 2^15-1, 2^23-1} Allows the user to enable the receive test pattern listed above. Rx Pattern Sync: {YES, NO} Yes indicates that the received test pattern is in sync.
OM20 Universal Outdoor Modem Pattern Error Count: {NO SYNC, nnnn x 10n} Displays the number of errors detected by the test pattern checker. Carrier Type: {NORMAL, CW, DUAL, OFFSET POS FIR, NEG FIR} RESTART TEST PATTERN: 6.4 Web Browser/Remote Protocol Clicking this button resets the test pattern counter and generator.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol When available buffer space is almost gone, the OM20 will force a collision on the input port when it senses an incoming packet. This collision will cause the transmitting station to back off and retry the transmission. The OM20 will stop forcing collisions as soon as free buffer space becomes available. 6.4.1.2 Full-Duplex Flow Control In full-duplex mode, the OM20 implements IEEE 8802.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol Link Status: The following status is available under the Monitor Menu/Link Status Sub-Menu when the Ethernet Data Interface is selected: Port 1 Status: Displays the current status of LAN Port 1. Port 2 Status: Displays the current status of LAN Port 2. Port 3 Status: Displays the current status of LAN Port 3. WAN Status: Displays the current status of the WAN Port.
OM20 Universal Outdoor Modem Web Browser/Remote Protocol 6.5.1 Modem Terminal Mode Control The modem can be interactively monitored and controlled in the Terminal Mode, with a full screen presentation of current settings and status. Programming is accomplished by selecting the item to be modified and pressing the terminal key of the option number. For example, to change the transmit data rate, enter ‘33’ at the terminal. The modem will respond by presenting the options available and requesting input.
OM20 Universal Outdoor Modem MN-OM20– Revision 5 Web Browser/Remote Protocol 6–64
Chapter 7. Maintenance and Troubleshooting This section discusses unit maintenance and troubleshooting for the OM20 Universal Satellite Modem. The OM20 contains a Lithium Battery. DANGER OF EXPLOSION exists if the battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries in accordance with local and national regulations. 7.1 Periodic Maintenance There is no external fuse on the OM20.
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. The Transmit Carrier is incompatible. Modem is in Test Mode. The Async Port is not configured correctly. The switches may not be set in the correct positions. 7.2.1 Alarm Faults 7.2.1.
OM20 Universal Outdoor Modem 7.2.1.2 Maintenance and Troubleshooting Major Rx Alarms Alarm FPGA CFG Possible Cause 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. FRAME LOCK Indicates that the FRMing Unit is unable to find the expected framing pattern. MULTIFOME LOCK Indicates that the FRMing Unit is unable to find the expected framing pattern.
OM20 Universal Outdoor Modem 7.2.1.4 Maintenance and Troubleshooting 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. BUFF OVERFLOW Indicates that a Doppler Buffer overflow has occurred. RX DATA ACTIVITY Indicates that there is no Rx Data activity.
OM20 Universal Outdoor Modem 7.2.1.5 Maintenance and Troubleshooting Drop and Insert Alarms Alarm Possible Cause Multiframe Lock The insert framer is not in sync. CRC Lock An Insert CRC Fault occurred. Valid in T1-ESF, PCM-30, or PCM30C Modes. T1 Signaling An Insert T1 Yellow Fault occurred. Valid in T1-ESF, T1D4, or SCL-96 Modes. E1 FAS (E1 Frame Acquisition Sync) An E1 FAS Fault occurred. Valid in PCM-30, or PCM-30C, PCM31, or PCM-31C Modes.
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. When an alarm is masked, the GUI interface LEDs and the Fault Relays do not get asserted, but the Alarm will still be displayed.
Chapter 8. Technical Specifications 8.1 Data Rates 8.2 Modulator Modulation L-Band Tuning Range Impedance Connector Return Loss Output Power Output Stability Output Spectrum Spurious On/Off Power Ratio Scrambler FEC Outer Encoder Options Data Clock Source Internal Stability MN-OM20– Revision 5 BPSK, QPSK, and OQPSK (8PSK, 16QAM Optional) 950 to 2050 MHz in 1 Hz Steps 50-Ohm N-Type female 10 dB Minimum -20 to -45 dB ±0.
OM20 Universal Outdoor Modem 8.
OM20 Universal Outdoor Modem 8.7 Technical Specifications Terrestrial Interfaces A variety of standard interfaces are available for the OM20 modem in stand-alone applications. 8.8 IDR/ESC Interface (Optional) G.703 T1 (DSX1) G.703 E2 8.9 1.544 Mbps, 100-Ohm Balanced, AMI and B8ZS 8.448 Mbps, 75-Ohm BNC, Unbalanced, HDB3 Ethernet Data Interface Ethernet Data Interface RJ-45, Auto-Crossover, Auto-Sensing, 10/100 Ethernet Data Port. Complies with IEEE 802.3 and IEEE 802.3u. 8.
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 QPSK SEQ 7/8 8400 2048000 QPSK TPC 1/2 4582 9545454 QPSK TPC 3/4 7200 15000000 QPSK TPC 7/8 8400 17500000 OQPSK NONE 9600 20000000 OQPSK VIT 1/2 4800 10000000 OQPSK VIT 3/4 7200 15000000 OQPSK VIT 7/8 8400 175000
OM20 Universal Outdoor Modem Technical Specifications 8.12.
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 3600 7500000 BPSK VIT 5/6 4000 8333333 BPSK VIT 7/8 4200 8750000 QPSK VIT 1/2 4800 10000000 QPSK VIT 2/3 6400 13333333 QPSK VIT 3/4 7200 15000000 QPSK VIT 5/6 8000 16666666 QPSK VIT 7/8 8400 17500000 8PSK TRE 2/3 9600 20
OM20 Universal Outdoor Modem 8.13 Technical Specifications OM20 / BER Specifications 8.13.1 BER Performance (Viterbi) 1E-1 B/O/QPSK Uncoded Theory 1E-2 Viterbi Decoder Typical Performance 1E-3 BER 1E-4 1E-5 1E-6 Specification 1/2 Rate 1E-7 Specification 3/4 Rate 1E-8 Specification 7/8 Rate 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb/No in dB Note: Eb/No values include the effect of using Differential Decoding and V.35 descrambling. Figure 8-1.
OM20 Universal Outdoor Modem Technical Specifications 8.13.2 BER Performance (Sequential) 1E-1 B/O/QPSK Uncoded Theory 1E-2 Sequential Decoder Typical Performance 1E-3 BER 1E-4 1E-5 1E-6 Specification 1/2 Rate Specification 3/4 Rate 1E-7 Specification 7/8 Rate 1E-8 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb/No in dB Note: Eb/No values include the effect of using Differential Decoding and V.35 descrambling. Figure 8-2.
OM20 Universal Outdoor Modem Technical Specifications 8.13.3 BER Performance (Viterbi with Reed-Solomon) 1E-1 B/O/QPSK Uncoded Theory 1E-2 Viterbi Decoder Reed Solomon Typical Performance 1E-3 BER 1E-4 1E-5 Specification 1/2 Rate 1E-6 Specification 3/4 Rate 1E-7 1E-8 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb/No in dB Note: Eb/No values include the effect of using Differential Decoding. Figure 8-3.
OM20 Universal Outdoor Modem Technical Specifications 8.13.4 BER Performance (8PSK Trellis) 1E-1 8PSK Uncoded Theory Trellis Decoder 1E-2 Typical Performance 1E-3 BER 1E-4 1E-5 1E-6 Specification 2/3 Rate 1E-7 Specification 2/3 Rate w/RS 1E-8 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb/No in dB Note: Eb/No values include the effect of using Differential Decoding and V.35 Descrambling. Figure 8-4.
OM20 Universal Outdoor Modem Technical Specifications 8.13.5 BER Performance (16QAM Viterbi) 1E-1 16QAM Uncoded Theory Viterbi Decoder 1E-2 Typical Performance 1E-3 BER 1E-4 1E-5 1E-6 Specification 3/4 Rate 1E-7 Specification 7/8 Rate 1E-8 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Eb/No in dB Note: Eb/No values include the effect of using Differential Decoding and V.35 Descrambling. Figure 8-5.
OM20 Universal Outdoor Modem Technical Specifications 8.13.6 BER Performance (16QAM Viterbi with Reed-Solomon) 1E-1 16QAM Uncoded Theory Viterbi Decoder Reed Solomon 1E-2 Typical Performance 1E-3 BER 1E-4 1E-5 1E-6 Specification 3/4 Rate w/RS 1E-7 Specification 7/8 Rate w/RS 1E-8 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Eb/No in dB Note: Eb/No values include the effect of using Differential Decoding. Figure 8-6.
OM20 Universal Outdoor Modem Technical Specifications 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 BER Specification Turbo 1/2 Specification Turbo 7/8 1E-5 1E-6 1E-7 Typical Performance 1E-8 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb/No in dB Figure 8-7.
OM20 Universal Outdoor Modem Technical Specifications 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 BER Typical Performance 1E-5 1E-6 1E-7 1E-8 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 Eb/No in dB Figure 8-8.
OM20 Universal Outdoor Modem Technical Specifications 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 BER Typical Performance 1E-5 1E-6 1E-7 1E-8 1E-9 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Eb/No in dB Figure 8-9.
OM20 Universal Outdoor Modem BER 1E-3 1E-4 1E-5 1E-6 1E-7 1E-8 1E-9 1E-10 Technical Specifications Table 8-1 - B/O/QPSK BER Performance (Viterbi) Typical Specification 1/2 Rate 3/4 Rate 7/8 Rate 1/2 Rate 3/4 Rate 7/8 Rate 4.2 dB 5.3 dB 6.2 dB 3.9 dB 4.9 dB 5.8 dB 4.8 dB 6.1 dB 7.1 dB 4.5 dB 5.6 dB 6.5 dB 5.5 dB 6.8 dB 7.9 dB 5.1 dB 6.3 dB 7.2 dB 6.1 dB 7.6 dB 8.6 dB 5.7 dB 7 dB 8.6 dB 6.7 dB 8.3 dB 9.3 dB 6.2 dB 7.7 dB 9.4 dB 7.4 dB 8.9 dB 10.2 dB 6.8 dB 8.4 dB 10.2 dB 8.2 dB 9.7 dB 11 dB 7.4 dB 9.
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 6.2 dB 1E-3 5.2 dB 4.8 dB 4.9 dB 1E-4 7 dB 5.5 dB 5.6 dB 5.1 dB 1E-5 7.8 dB 5.8 dB 6.4 dB 5.4 dB 6.2 dB 1E-6 8.7 dB 7.2 dB 5.6 dB 1E-7 9.5 dB 6.5 dB 8.1 dB 5.8 dB 6.7 dB 1E-8 10.2 dB 8.9 dB 6.1 dB 9.7 dB 1E-9 11.1 dB 6.9 dB 6.3 dB 6.6 dB 1E-10 11.9 dB 7.3 dB 10.
OM20 Universal Outdoor Modem BER 1E-3 1E-4 1E-5 1E-6 1E-7 1E-8 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 TBD 3.2 dB 4 dB TBD 2.8 dB 3.7 dB TBD 3.4 dB 4.1 dB TBD 3 dB 3.8 dB 2.7 dB 3.6 dB 4.2 dB 2.4 dB 3.2 dB 3.9 dB 3.8 dB 2.9 dB 4.3 dB 2.6 dB 3.4 dB 4 dB 3.7 dB 3.1 dB 4.1 dB 4.4 dB 2.8 dB 4.1 dB 3.3 dB 4.4 dB 4.5 dB 3 dB 4 dB 4.
OM20 Universal Outdoor Modem 8.13.10 Technical Specifications Input Level Refer to Figure 8-10 for the OM20 power threshold limits.
OM20 Universal Outdoor Modem Technical Specifications Notes: MN-OM20– Revision 5 8–20
Appendix A. Product Options A.1 Hardware Options The following enhanced interface cards are available. All options must be factory installed. A.1.1 G.703/IDR ESC Interface 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. A.1.
OM20 Universal Outdoor Modem A.2 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: Customized Data Rates. Customized Scrambler/Descramblers. Customized Overhead Framing Structures. Customized Modulation Formats. Customized Uses for the ES-ES Overhead Channel.
Appendix B. Software Upgrade Procedure The outdoor modem software may be upgraded via the terminal or the web interface. B.1 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. Demonstration upgrades will enable the optional features for a 30-day evaluation period. B.
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: 1234.1234.1234 Your Comtech EF Data Sales Representative will ask you for this number along with your desired feature set upgrades when placing your order. Once your order has been processed, you will be issued a 12-digit feature set upgrade code. This code is only good on the modem for which it was ordered.
OM20 Universal Outdoor Modem B.4 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.
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: 1234.1234.1234 Your Radyne Sales Representative will ask you for this number along with the features you wish to demo. 3. Once your order has been processed, you will be issued a 12-digit demonstration code. This code can only be used one time and it is only good on the modem for which it was originally requested.
OM20 Universal Outdoor Modem B.6 Web Browser Software Upgrade B.7 Monitor and Control Appendix B 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. 1. From the modem introduction page, click the MONITOR & CONTROL tab. 2.
OM20 Universal Outdoor Modem Appendix B The Web Browser menu allows viewing of actively enabled features. Each feature displays a series of symbols that describe feature status. The following symbols indicate: Installed No hardware available. Requires hardware for upgrade. Feature is in Demo Mode and will expire. Key Code Required Call customer service. Feature is enabled for customer use, but the OM20 hardware required has not been detected or has failed.
Appendix C. Carrier Control C.1 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. This will keep the modulator output spectrum transmitting, even when the fault occurs.
OM20 Universal Outdoor Modem C.4 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. C.
Appendix D. Quick Start Guide D.1 Introduction This section provides quick setup instructions to access the Web Browser through the RJ45 Ethernet interface. The Web user interface allows for complete monitoring and control of all modem parameters and functions via a 10BaseT Ethernet connection. For more details on the various WEB configurations and a description of all the available selections, please refer to the manuals. D.
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. 5. The IP addresses of the OM-20 are now configured to the following: Boot Modes: Bootp Server Tag: IPTEST 206 IP Address Mask: 255.255.255.000 Modem IP Address: 192.168.0.238 Server IP Address: 192.168.000.101 Router IP Address: 192.168.
OM20 Universal Outdoor Modem A. B. C. D. Appendix D The cables are secured. The Link Light is illuminated. The IP Address that is used matches the Modem’s IP Address. The Server and Modem are on the same subnet. 9. Start the Internet browser on the computer and enter the IP Address 192.168.0.238 in the address field then press the Enter key per Figure 2. Figure 2. Internet Browser Address 10. The Web Browser should be displayed on your computer screen.
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. The OM-20 is initially configured with the following defaults as illustrated in Figure 4. User Name: Password: admin admin Figure 4.
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. 3. Change the Boot Mode to NON-VOL. Change IP addresses, and subnet mask to the recommended settings and click on the Save button to accept the changes (refer to section 3.2.2 for Boot Mode descriptions).
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 If everything is functioning correctly, replies from the modem will appear on the computer screen along with the time it took to respond. If unsuccessful, verify the following: a. b.
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. 5. Click on the Cancel button at any time to abort and reload the current user settings. Figure 6.
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. Numeric characters can be selected by using the number keys on the front panel. The user can clear all characters from the front panel screen. D.5.
Appendix E.Drop & Insert (D&I) E.1 Drop and Insert (D&I) (For Efficient Drop & Insert refer to Appendix F) The Radyne OM20 Drop and Insert (D&I) Function provides an interface between a full T1 or E1 Trunk whose framing is specified in CCITT G.704 and a fractional Nx64 Kbps Satellite Channel that conforms to the IBS and small IDR Framing Structures.
OM20 Universal Outdoor Modem E.2 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). SD (DDI ) OM20 Modem Terrestrial Trunk Figure 3-9. Drop Only E.3 Insert Only When Insert is enabled and Drop is disabled, the OM20 performs an insert-only function.
OM20 Universal Outdoor Modem Appendix E OM20 Modem Terrestrial Trunk RD (IDO ) Figure 3-11. Insert Only with Internal Frame Source E.4 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. E.4.
OM20 Universal Outdoor Modem Appendix E E.4.3 PCM-31 The PCM-31 Mode of Operation supports an E1 Interface with no Multiframe Alignment (MFAS) or Channel Associated Signaling (CAS). The user may independently program n timeslots to drop and n timeslots to insert where n = 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, or 30. Because there is no implied ABCD signaling, the user is free to select timeslot 16 as a Drop or Insert Timeslot. E.4.
OM20 Universal Outdoor Modem Appendix E Figure E-1. Multidestinational Communications E.6 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. Once these menus are configured, the Mapping Menu must be used to actually enter the settings into the modem.
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). Under the Interface Menu the Tx or Rx Interface can be configured (refer to Figure 3-13). Use these menus to set up the interface and then point and click the cursor on the channel time slot to be changed.
OM20 Universal Outdoor Modem Appendix E It is not mandatory to assign timeslots in sequential order, although the lowest timeslot must be entered in the lowest channel. For example: timeslots may be assigned 1 - 2, 2 - 5, etc. but not 1 - 5, 2 - 2. E.7 Configuring the OM20 for Drop and Insert Several dependencies exist when configuring the modem for Drop and Insert (D&I).
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 n = 6, data rate = 384000 n = 8, data rate = 512000 n = 10, data rate = 640000 n = 12, data rate = 768000 n = 15, data rate = 960000 n = 16, data rate = 1024000 n = 20, data rate = 1280000 n = 24, data rate = 1536000 n = 30, data rate = 1920000 (valid with E1 Interface only) E.7.
OM20 Universal Outdoor Modem E.7.3.1 Appendix E Insert Terrestrial Frame Source The Insert Terrestrial Frame Source selection tells the Modem from where the Insert Terrestrial Frame is coming. External: Indicates that the terrestrial frame is to be input via the Insert Data In Port (Internally looped to the DDO Port).
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 Use Map Copy to copy Tx Edit to Tx Active Under Modulator: Under Mod IF: Set Frequency to desired value Turn IF Output Power On Under Demodulator: Under Demod Data: Set Data Rate = 512000 Set Conv Enc = 3/4 Rate VIT Under Demodulator: Set Network Spec.
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.
OM20 Universal Outdoor Modem E.8 Appendix E D&I Maps and Map Editing The Drop and Insert multiplexer is programmed by loading it with a transmit and receive map. 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.
OM20 Universal Outdoor Modem Appendix E ROM maps are read-only and may not be modified (refer to Table E-2). ROM Map Table E-2.
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.
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. To insert data received from a demodulator into channels 17 through 24 of an E1 frame, the first eight entries of the Active Receive map should contain 17, 18, 19, 20, 21, 22, 23, and 24.
OM20 Universal Outdoor Modem Appendix E Notes: MN-OM20– Revision 5 E–16
Appendix F. Efficient Drop & Insert (D&I) F.1 Introduction The following paragraphs describe the menu structure and procedure for configuring a Radyne OM20 modem for Efficient Drop & Insert Mode. F.2 Prerequisite In order for a modem to be configured for efficient Drop & Insert, the modem must have a G.703 Interface card installed and Open Network Drop & Insert must be enabled.
OM20 Universal Outdoor Modem Appendix F FEATURES UPGRADE LIST D&I INSTALLED F.
OM20 Universal Outdoor Modem INBAND RATE 150 300 600 1200 2400 4800 9600 19200 Appendix F Available when enhanced async is enabled, this field allows the operator to set the Earth Station to Earth station in-band rate. In most cases, this should be set to the same rate or higher than the ES port baud rate. When this rate is set lower than the ES port baud rate, the user must insure that the actual transmission rate does not exceed the in-band rate, otherwise, characters will be dropped F.3.
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.
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.
OM20 Universal Outdoor Modem Appendix F Notes: MN-OM20– Revision 5 F–6
Appendix G. Strap Codes G.1 Strap Codes The Strap Code is a quick set key that sets many of the modem parameters. For quick setup of the modem, Strap Codes are very helpful. When a Strap Code is entered, the modem is automatically configured for the code’s corresponding data rate, overhead, code rate, framing, scrambler type and modulation. An example of how to set a strap code follows: Example: At the Front Panel Menu, depress ‘↓’, then move ‘→’ to the ‘Strap Code’ Submenu and enter #16.
OM20 Universal Outdoor Modem Appendix G 12 2048 16/15 1/2 VIT IBS IBS Dis Dis QPSK CNT 16 1544 96K 3/4 VIT IDR V.35 (IESS) Dis Dis QPSK IDR 32 2048 96K 3/4 VIT IDR V.35 (IESS) Dis Dis QPSK IDR 64 6312 96K 3/4 VIT IDR V.35 (IESS) Dis Dis QPSK IDR 128 8448 96K 3/4 VIT IDR V.35 (IESS) Dis Dis QPSK IDR 24 56 1 1/2 VIT NONE V.35 (IESS) Dis Dis QPSK CNT V.35 (IESS) Dis Dis QPSK CNT 33 56 1 3/4 VIT NONE 34 64 1 1/2 VIT NONE V.
OM20 Universal Outdoor Modem Appendix G 69 6312 1 3/4 VIT NONE V.35 (IESS) Dis Dis QPSK CNT 70 8448 1 3/4 VIT NONE V.35 (IESS) Dis Dis QPSK CNT 73 3152 1 1/2 VIT NONE V.35 (IESS) Dis Dis QPSK CNT 74 3152 1 3/4 VIT NONE V.35 (IESS) Dis Dis QPSK CNT 76 3264 1 1/2 VIT NONE V.35 (IESS) Dis Dis QPSK CNT 81 3264 1 3/4 VIT NONE V.35 (IESS) Dis Dis QPSK CNT 88 512 16/15 3/4 VIT IBS IBS Dis Dis QPSK IBS 97 1024 1 1/2 VIT CNT V.
OM20 Universal Outdoor Modem Appendix G 46 1152 16/15 3/4 VIT IBS IBS Dis Dis QPSK CNT 51 1216 16/15 1/2 VIT IBS IBS Dis Dis QPSK CNT 53 1216 16/15 3/4 VIT IBS IBS Dis Dis QPSK CNT 54 1280 16/15 1/2 VIT IBS IBS Dis Dis QPSK CNT 57 1280 16/15 3/4 VIT IBS IBS Dis Dis QPSK CNT 58 1344 16/15 1/2 VIT IBS IBS Dis Dis QPSK CNT 67 1408 16/15 1/2 VIT IBS IBS Dis Dis QPSK CNT 71 1408 16/15 3/4 VIT IBS IBS Dis Dis QPSK CNT 75 14
OM20 Universal Outdoor Modem G.2 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. Allowable Combinations: Mode/Rate/Framing. IDR: 8.448 Mbps 6.312 Mbps 2.048 Mbps 1.
OM20 Universal Outdoor Modem Appendix G Case 1: IDR 8.
OM20 Universal Outdoor Modem Appendix G Case 2: IBS 1.
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: Under Mod Data Menu: Set code rate to 3/4 VIT Set Framing for 1/15 Under Mod IF Menu: Set desired Tx frequency and power level Turn IF ON Method 2 Under Interface Menu: Set Interface type Set Tx clock selection Set Mod strap code to: 101 Under Mod IF Menu: Set desired Tx fre
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 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 Closed Net MN-OM20– Revision 5 G–9
OM20 Universal Outdoor Modem Appendix G Notes: MN-OM20– Revision 5 G–10
Appendix H. AUPC Operations H.1 Automatic Uplink Power Control (AUPC Operation) The modem has an optional built-in provision for Automatic Uplink Power Control, AUPC. AUPC is useful when operating power levels are affected by environmental changes in the atmosphere. AUPC attempts to adjust local power output to maintain a constant Eb/No at the receiver location. The modem supports three versions of AUPC. They include Radyne AUPC, EF AUPC and Near Side AUPC.
OM20 Universal Outdoor Modem Appendix G drop in the remote Eb/No, it slowly begins to raise the output power, and will continue to adjust if the remote Eb/No continues to drop. As the rain increases in intensity, the remote Eb/No decreases but Local modem continues to increase its power level to compensate. When the rain diminishes, Local modem will see the remote Eb/No begin to increase. Local modem will lower its power level.
OM20 Universal Outdoor Modem Appendix G There are safeguards built into the AUPC System. First, the modulator has two parameters, which allow control of the maximum and minimum output power Levels. Second, a nominal, or default, power level is specified which takes effect if the receive signal or messaging is lost. This nominal power should be set to a level high enough to re-establish communications regardless of rain fade.
OM20 Universal Outdoor Modem Appendix G Notes: MN-OM20– Revision 5 H–4
METRIC CONVERSIONS Units of Length Unit Centimeter Inch Foot Yard Mile Meter Kilometer Millimeter 1 centimeter — 0.3937 0.03281 0.01094 6.214 x 10-6 0.01 — — 1 inch 2.540 — 0.08333 0.2778 1.578 x 10-5 0.254 — 25.4 1 foot 30.480 12.0 — 0.3333 1.893 x 10-4 0.3048 — — 1 yard 91.44 36.0 3.0 — 5.679 x 10-4 0.9144 — — 1 meter 100.0 39.37 3.281 1.094 6.214 x 10-4 — — — 1 mile 1.609 x 105 6.336 x 104 5.280 x 103 1.760 x 103 — 1.609 x 103 1.
2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 • 333 • 2200 PHONE 480 • 333 • 2161 FAX
