Page 1 AS9100 Rev B / ISO9001:2000 Registered Company DMD50 Universal Satellite 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-DMD50 Revision 4...
Page 3: Specification
Errata A for MN-DMD50 Rev 4 Comtech EF Data Documentation Update Subject: Chapter 7, Technical Specifications ER-MNDMD50-EA4 (Errata documents are not subject to revision.) Errata Part Number: PLM CO Number: C-0026227 Comments: See attached page(s). The new information will be included in the next released revision of the manual.
Page 4 Blank Page ER-MNDMD50-EA4 Rev - PLM C-0026227...
Page 5: Specification
{2/3, 3/4, 5/6, 7/8, 8/9} Turbo Product Code (Optional) – (SuperCard ONLY) Turbo (BPSK) {21/44,5/16} Turbo (OQPSK/QPSK) {1/2, 3/4, 7/8} <20Mbps Turbo (8PSK/16QAM) {3/4, 7/8} <20Mbps Turbo (OQPSK/QPSK) {.750, .875} >20Mbps Turbo (8PSK) {.750, .875} >20Mbps MN-DMD50 Revision 4 7–1 ER-MNDMD50-EA4 Rev -...
Page 6 DMD50 Universal Satellite Modem Technical Specifications Legacy Turbo Rates {0.495, 0.793} < 5Mbps LDPC/TPC (Optional) <20Mbps LDPC (BPSK) {1/2} LDPC (OQPSK/QPSK) {1/2, 2/3, 3/4} LDPC (8PSK/8QAM) {2/3, 3/4} LDPC (16QAM) {3/4} Turbo (BPSK) {21/44} Turbo (QPSK/OQPSK) {1/2, 2/3, 3/4, 7/8}...
Page 7 Transmit, External, Rx Recovered or SCT (Internal) Monitor and Control Ethernet 10 Base-T/Web Browser, Remote RS-485/Terminal RS-232/DMD15 Protocol Compatible DMD50 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 8 DMD50 Universal Satellite Modem Technical Specifications G.703 T2 (100) 6.312 Mbps, 75 Ohm Unbalanced and 110 Ohm Balanced, B8ZS and B6ZS G.703 E2 8.448 Mbps, 75 Ohm BNC, Unbalanced, HDB3 IDR/ESC T3/E3/STS1 Interface (Optional) G.703 T1 (DSX1) 1.544 Mbps, 100-Ohm Balanced, AMI and B8ZS G.703 E1...
Page 9 DMD50 Universal Satellite Modem Technical Specifications 7.16 HSSI / G703 T2/E2 Max HSSI High-Speed Serial Interface, 50-pin SCSI-2 Type Connector (Female) G.703 T1 (DSX1) 1.544 Mbps, 100-Ohm Balanced, AMI and B8ZS G.703 E1 2.048 Mbps, 75-Ohm Unbalanced and 120-Ohm Balanced, HDB3 G.703 T2 (DSX2)
Page 10 DMD50 Universal Satellite Modem Technical Specifications 7.21 DMD50 Data Rate Limits 7.21.1 Non-DVB Modulation Code Rate Min Data Rate Max Data Rate Option Card BPSK NONE 4800 10000000 BPSK VIT 1/2 2400 10000000 BPSK VIT 3/4 3600 10000000 BPSK VIT 7/8...
Page 11 DMD50 Universal Satellite Modem Technical Specifications Modulation Code Rate Min Data Rate Max Data Rate Option Card QPSK TPC 1/2 18000 9545400 LDPC/TPC Card QPSK TPC 3/4 27000 15000000 LDPC/TPC Card QPSK TPC 7/8 31500 17500000 LDPC/TPC Card OQPSK NONE...
Page 12 DMD50 Universal Satellite Modem Technical Specifications Modulation Code Rate Min Data Rate Max Data Rate Option Card 8QAM TPC 3/4 40500 20000000 LDPC/TPC Card 8QAM TPC 7/8 48000 20000000 LDPC/TPC Card 8QAM LDPC 2/3 36000 20000000 LDPC/TPC Card 8QAM LDPC 3/4...
Page 13 DMD50 Universal Satellite Modem Technical Specifications 188 Mode Modulation Code Rate Min Data Rate Max Data Rate BPSK VIT 1/2 2400 4607843 BPSK VIT 2/3 2950 6143790 BPSK VIT 3/4 3318 6911764 BPSK VIT 5/6 3687 7679738 BPSK VIT 7/8...
Page 14 Specification 3/4 1E-7 Rate Specification 7/8 1E-8 Rate 1E-9 Eb/No in dB Figure 7-1 – DMD50 B/O/QPSK BER Performance (Viterbi) Note: Eb/No values include the effect of using Differential Decoding and V.35 descrambling. MN-DMD50 Revision 4 7–10 ER-MNDMD50-EA4 Rev -...
Page 15 1E-7 Specification 3/4 Rate 1E-8 Specification 7/8 Rate 1E-9 Eb/No in dB Figure 7-2 – DMD50 B/O/QPSK BER Performance (Sequential) Note: Eb/No values include the effect of using Differential Decoding and V.35 descrambling. MN-DMD50 Revision 4 7–11 ER-MNDMD50-EA4 Rev -...
Page 16 1/2 Rate 1E-7 Specification 7/8 Rate Specification 3/4 Rate 1E-8 1E-9 Eb/No in dB Figure 7-3 – DMD50 B/O/QPSK BER Performance (Viterbi – w/RS) Note: Eb/No values include the effect of using Differential Decoding. MN-DMD50 Revision 4 7–12 ER-MNDMD50-EA4 Rev -...
Page 17 1E-6 1E-7 Specification Turbo 0.495 1E-8 Specification Turbo 0.793 1E-9 Eb/No in dB Figure 7-4 – DMD50 B/O/QPSK BER Performance (Turbo) Note: Eb/No values include the effect of using interleaving and maximum iterations. MN-DMD50 Revision 4 7–13 ER-MNDMD50-EA4 Rev -...
Page 18 2/3 Rate 1E-7 Specification 2/3 Rate w/RS 1E-8 1E-9 Eb/No in dB Figure 7-5 – DMD50 8PSK BER Performance (Trellis) Note: Eb/No values include the effect of using Differential Decoding and V.35 Descrambling. MN-DMD50 Revision 4 7–14 ER-MNDMD50-EA4 Rev -...
Page 19 1E-3 1E-4 1E-5 1E-6 1E-7 1E-8 Specification Turbo 0.793 1E-9 Eb/No in dB Figure 7-6 – DMD50 8PSK BER Performance (Turbo) Note: Eb/No values include the effect of using interleaving and maximum iterations. MN-DMD50 Revision 4 7–15 ER-MNDMD50-EA4 Rev -...
Page 20 Specification 3/4 Rate 1E-7 Specification 7/8 Rate 1E-8 1E-9 Eb/No in dB Figure 7-7 – DMD50 16QAM BER Performance (Viterbi) Note: Eb/No values include the effect of using Differential Decoding and V.35 Descrambling. MN-DMD50 Revision 4 7–16 ER-MNDMD50-EA4 Rev -...
Page 21 Specification 1E-7 3/4 Rate w/RS Specification 7/8 Rate w/RS 1E-8 1E-9 Eb/No in dB Figure 7-8 – DMD50 16QAM BER Performance (Viterbi w/RS) Note: Eb/No values include the effect of using Differential Decoding. MN-DMD50 Revision 4 7–17 ER-MNDMD50-EA4 Rev -...
Page 22 1E-4 1E-5 1E-6 Turbo 0.495 1E-7 Turbo 0.793 1E-8 1E-9 Eb/No in dB Figure 7-9 – DMD50 16QAM BER Performance (Turbo) Note: Eb/No values include the effect of using interleaving and maximum iterations. MN-DMD50 Revision 4 7–18 ER-MNDMD50-EA4 Rev -...
Page 23 B/O/QPSK Uncoded Theory 1E-2 Turbo Decoder Specification 3/4 Rate 1E-3 1E-4 Specification Specification 1/2 Rate 7/8 Rate 1E-5 1E-6 1E-7 Typical Performance 1E-8 1E-9 Eb/No in dB Figure 7-10 – DMD50 (O)QPSK BER Performance (Turbo) MN-DMD50 Revision 4 7–19 ER-MNDMD50-EA4 Rev -...
Page 24 1E-1 B/O/QPSK Uncoded Theory 1E-2 Turbo Decoder 1E-3 1E-4 Specification 21/44 Rate 1E-5 Specification 5/16 Rate 1E-6 1E-7 Typical Performance 1E-8 1E-9 Eb/No in dB Figure 7-11 – DMD50 BPSK BER Performance (Turbo) MN-DMD50 Revision 4 7–20 ER-MNDMD50-EA4 Rev -...
Page 25 1E-1 8PSK Uncoded Theory 1E-2 Turbo Decoder Specification 3/4 Rate 1E-3 Specification 7/8 Rate 1E-4 Typical Performance 1E-5 1E-6 1E-7 1E-8 1E-9 Eb/No in dB Figure 7-12 – DMD50 8PSK BER Performance (Turbo) MN-DMD50 Revision 4 7–21 ER-MNDMD50-EA4 Rev -...
Page 26 1E-1 16QAM Uncoded Theory Turbo Decoder 1E-2 Specification 3/4 Rate Specification 7/8 1E-3 Rate 1E-4 Typical Performance 1E-5 1E-6 1E-7 1E-8 1E-9 Eb/No in dB Figure 7-13 – DMD50 16QAM BER Performance (Turbo) MN-DMD50 Revision 4 7–22 ER-MNDMD50-EA4 Rev -...
Page 27 B/O/QPSK Uncoded Theory 1E-2 LDPC Decoder 1E-3 Specification 1/2 Rate Specification 2/3 Rate 1E-4 Specification 3/4 Rate 1E-5 Typical Performance 1E-6 1E-7 1E-8 1E-9 Eb/No in dB Figure 7-14 – DMD50 B/O/QPSK BER Performance (LDPC) MN-DMD50 Revision 4 7–23 ER-MNDMD50-EA4 Rev -...
Page 28 Decoder 1E-3 1E-4 Typical Performance 8QAM Rate 2/3 Specification 1E-5 8PSK Rate 2/3 Specification 1E-6 8PSK/8QAM Rate 3/4 Specification 1E-7 1E-8 1E-9 Eb/No in dB Figure 7-15 – DMD50 8PSK/8QAM BER Performance (LDPC) MN-DMD50 Revision 4 7–24 ER-MNDMD50-EA4 Rev -...
Page 29 16QAM BER Performance (LDPC) 1E-1 16QAM Uncoded Theory 1E-2 LDPC Decoder 1E-3 1E-4 Typical Performance Specification 1E-5 3/4 Rate 1E-6 1E-7 1E-8 1E-9 Eb/No in dB Figure 7-16 – DMD50 16QAM BER Performance (LDPC) MN-DMD50 Revision 4 7–25 ER-MNDMD50-EA4 Rev -...
Page 30 DMD50 Universal Satellite Modem Technical Specifications Table 7-1 - 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 31 DMD50 Universal Satellite Modem Technical Specifications Table 7-5 - 8PSK BER Performance (Trellis) Specification Typical 2/3 Rate 2/3 Rate w/RS 2/3 Rate 2/3 Rate w/RS 1E-3 6.3 dB 5.8 dB 4.8 dB 4.9 dB 1E-4 7.3 dB 6.1 dB 5.6 dB 5.1 dB...
Page 32 DMD50 Universal Satellite Modem Technical Specifications Table 7-9 - 16QAM BER Performance (Turbo) Specification Typical Turbo 0.495 Turbo 0.793 Turbo 0.495 Turbo 0.793 1E-3 5.6 dB 7 dB 1E-4 6.1 dB 7.4 dB 1E-5 6.6 dB 7.8 dB 1E-6 7 dB 8.2 dB...
Page 33 DMD50 Universal Satellite Modem Technical Specifications Table 7-13 - 16QAM BER Performance (Turbo) Specification Typical 3/4 Rate 7/8 Rate 3/4 Rate 7/8 Rate 1E-3 6.3 dB 7.8 dB 6 dB 7.4 dB 1E-4 6.7 dB 7.9 dB 6.4 dB 7.5 dB...
Page 34 DMD50 Universal Satellite Modem Technical Specifications 7.22.18 ACG Output Voltage The AGC Output Voltage is a function of the Input Power Level in dBm. The AGC Output Voltage is found on the Alarm connector Pin 14 of J15. Figure 7-13. AGC Voltage Monitor MN-DMD50 Revision 4 7–30...
Page 35 Errata B for MN-DMD50 Rev 4 Comtech EF Data Documentation Update Subject: Chapter 3, Theory of Operation Errata Part Number: ER-DMD50-EB4 (Errata documents are not subject to revision.) PLM CO Number: C-0028800 Comments: The new information will be included in the next released revision of the manual.
Page 36 Blank Page ER-DMD50-EB4 Rev - PLM C-0028800...
Page 37: Installation And Operation Manual
DMD50 Universal Satellite Modem Installation and Operation Manual Part Number MN-DMD50 Revision 4 Copyright © 2013 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 38 BLANK PAGE...
Page 39: Table Of Contents
Table of Contents CHAPTER 1. INTRODUCTION ....................1–1 Overview ............................... 1–1 8 B C onfigurations ............................1–2 1.2.1 Features/Options Installed at Time of Order ..................1–2 1.2.2 Feature Upgrades ..........................1–2 1.2.3 Hardware Options ..........................1–2 1.2.4 Factory Installed Options ........................1–2 Function Accessibility ..........................
Page 40 Table of Contents Revision 4 DMD50 Universal Satellite Modem MN-DMD50 Clocking Options ..........................3–11 3.7.1 TX Clock Options ..........................3–11 3.7.2 RX Buffer Clock Options ........................3–12 3.7.3 EXT REF: External Reference, Top BNC Port, J10 ................3–14 RS530/422/V.35 Interface (Standard) ....................3–14 3.8.1...
Page 41 Table of Contents Revision 4 DMD50 Universal Satellite Modem MN-DMD50 CHAPTER 4. USER INTERFACES ..................... 4–1 User Interfaces ............................4–1 Front Panel User Interface........................4–1 LCD Front Panel Display ........................4–2 4.2.1 Cursor Control Arrow Keys ......................... 4–2 4.2.2 Numeric Keypad ..........................4–2 4.2.3...
Page 42 Table of Contents Revision 4 DMD50 Universal Satellite Modem MN-DMD50 5.4.8 1 4 3 B ASYNC (J17) ............................5–4 5.4.9 J18..............................5–5 5.4.10 EIA-530 (J19) ..........................5–5 5.4.11 REMOTE (J20) ..........................5–6 5.4.12 ETHERNET (J21) ..........................5–6 G.703 IDR/IBS Interface (Optional) ......................5–6 ESC ALARM (J1) .............................
Page 43 Data Rates ............................. 7–1 Modulator ............................. 7–1 Demodulator ............................7–2 Plesiochronous Buffer ........................... 7–3 Monitor and Control ..........................7–3 DMD50 Drop and Insert (Optional) ....................... 7–3 Terrestrial Interfaces ..........................7–3 IDR/ESC T2/E2 Interface (Optional) ....................... 7–3 IDR/ESC T3/E3/STS1 Interface (Optional) ....................7–4 7.10 IBS/Synchronous Interface (Standard) ....................
Page 44 Table of Contents Revision 4 DMD50 Universal Satellite Modem MN-DMD50 7.22.3 BER Performance (Viterbi with Reed-Solomon) ................7–12 7.22.4 BER Performance (Turbo) ......................7–13 7.22.5 BER Performance (8PSK Trellis) ....................7–14 7.22.6 BER Performance (8PSK Turbo) ....................7–15 7.22.7 BER Performance (16QAM Viterbi)....................7–16 7.22.8...
Page 45 Table of Contents Revision 4 DMD50 Universal Satellite Modem MN-DMD50 States ..............................C–1 Carrier Off ............................. C–1 Carrier On.............................. C–1 Carrier Auto ............................C–1 Carrier VSat ............................C–2 Carrier RTS ............................C–2 APPENDIX D. WEB BROWSER SETUP GUIDE ..............D–1 Introduction ............................
Page 46 Table of Contents Revision 4 DMD50 Universal Satellite Modem MN-DMD50 APPENDIX G. AUPC OPERATION.................... G–1 Automatic Uplink Power Control (AUPC Operation) ................G–1 G.1.1 Radyne AUPC ............................. G–1 G.1.2 EF AUPC ............................. G–2 G.1.3 Near Side AUPC ..........................G–2 APPENDIX H. DROP AND INSERT (D&I) ................H–1 Drop and Insert (D&I) ..........................
Page 47: About This Manual
PREFACE About this Manual This manual describes the installation and operation of the DMD50 Universal Satellite Modem. Conventions and References Patents and Trademarks See all of Comtech EF Data's Patents and Patents Pending at http://patents.comtechefdata.com. Comtech EF Data acknowledges that all trademarks are the property of the trademark owners.
Page 48: Electrical Safety
MN-DMD50 Electrical Safety The DMD50 has been shown to comply with the EN 60950-1 Safety of Information Technology Equipment (including electrical business machines) safety standard. The equipment is rated for a nominal operating range of 100 - 240 volts AC or an appropriately equipped DC option, nominal operating range is 48+/-5 volts DC .
Page 49 The installation and connection to the line supply must be made in compliance to local or national wiring codes and regulations. The DMD50 is shipped with a line inlet cable suitable for use in the country of operation. If it is necessary to replace this cable, ensure the replacement has an equivalent specification.
Page 50 DMD50 Universal Satellite Modem MN-DMD50 EMC (Electromagnetic Compatibility) In accordance with European Directive 2004/108/EEC, the DMD50 has been shown, by independent testing, to comply with the following standards: EN 55022 Class B - Limits and methods of measurement of radio interference Emissions: characteristics of Information Technology Equipment.
Page 51: Limitations Of Warranty
Preface Revision 4 DMD50 Universal Satellite Modem MN-DMD50 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 52: Customer Support
Preface Revision 4 DMD50 Universal Satellite Modem MN-DMD50 Customer Support Support Business Hours - Monday through Friday - 8:00 a.m. to 5:00 p.m. (MST) Comtech EF Data & Radyne • Satellite Modems • Modem Accessories Tel: +1.480.333.4357 • Amplifiers Fax: +1.480.333.2500 •...
Page 53: Chapter 1. Introduction
“the modem”, or “the unit”. Overview The DMD50 Universal Satellite Modem (Figure 1-1) offers the best features of a sophisticated programmable IBS/IDR and Closed Network Modem, at an affordable price. Figure 1-1. Universal Satellite Modem Front Panel This versatile equipment package combines unsurpassed performance with numerous user- friendly Front Panel Programmable Functions.
Page 54: Configurations
DMD50 Universal Satellite Modem Introduction Configurations The unit can be configured in the following ways:  Features and options that are installed when the unit is ordered  Feature upgrades  Hardware options that are installed to a unit that is sent to a Comtech facility ...
Page 55: Chapter 2. Installation
Refer to the sections that follow for further installation instructions. The Universal Satellite Modem was carefully packaged to avoid damage and should arrive complete with the following items for proper installation: DMD50 Universal Satellite Modem Power Cord, six foot with applicable AC Connector Installation and Operation Manual If the AC power cable connector is the wrong type for the installation, replace either the cable or the power connector end.
Page 56: Installation Requirements
(RU) mounting space (1.75 inches) vertically and 19 inches of depth and requires a minimum rack depth of 22 inches for cabling. The rear panel of the DMD50 is designed to have power enter from the left and IF Cabling enter from the right when viewed from the rear of the unit. Data and control cabling can enter from either side based on data interface option.
Page 57: Initial Configuration Check
DMD50 Universal Satellite Modem Installation PROPER GROUNDING PROTECTION REQUIRED: The installation instructions require that the integrity of the protective earth must be ensured and that the equipment shall be connected to the protective earth connection at all times. Therefore, it is imperative during installation, configuration, and operation that the user ensures that the unit has been properly grounded using the ground stud provided on the rear panel of the unit.
Page 58: Modulator Checkout
DMD50 Universal Satellite Modem Installation Modulator Checkout The following descriptions assume that the unit is installed in a suitable location with prime AC power and supporting equipment available. 2.5.1 Initial Power-Up Before initial power up of the unit, it is a good idea to disconnect the transmit output from the operating ground station equipment.
Page 59: Chapter 3. Theory Of Operation
L-Band/IF Assembly and a Digital Baseband Assembly. The optional printed circuit cards include a Turbo Codec printed circuit card and one of several types of Interface printed circuit card (refer to Appendix A). A block diagram of the DMD50 is shown in Figure 3-1.
Page 60: Baseband Processing Printed Circuit Card
DMD50 Universal Satellite Modem Theory of Operation In the modulator, analog in-phase (I) and quadrature (Q) signals are generated on the Digital Baseband Printed Circuit Card, routed to the L-Band/IF Printed Circuit Card, and modulated at the desired frequency. The L-Band or 70/140 modulated signal is then passed through a microprocessor controlled variable attenuator providing gain control of the output signal.
Page 61: Enhanced Interface 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 DMD50. Communication to the outside world is done via connections to the remote port, terminal port, Ethernet port, and alarm ports.
Page 62: Front Panel
DMD50 Universal Satellite Modem Theory of Operation Figure 3-3. Universal Satellite Modem Functional Block Diagram 3.2.1 Front Panel The Front Panel includes a 2 x 16 backlit LCD Display, Indicator LEDs, and a Numeric Keypad (refer to Chapter 4). 3.2.2 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.
Page 63: Tx Baseband Processing
DMD50 Universal Satellite Modem Theory of Operation 3.2.3 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 IDR, IBS, and D&I Modes, the framer adds the appropriate framing and ESC as defined in IESS-308 and 309.
Page 64: 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 65: Modem Monitor Status
DMD50 Universal Satellite Modem Theory of Operation 3.3.4 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.
Page 66: 2 B L Oopback Features (Terrestrial & If)
DMD50 Universal Satellite Modem Theory of Operation Loopback Features (Terrestrial & IF) The modem provides for a number of different loopbacks. The Loopback supported are:  IF Loopback – Tx IF port is looped back to the Rx IF port ...
Page 67 DMD50 Universal Satellite Modem Theory of Operation Figure 3-4. Loopback Functional Block Diagram MN-DMD50 Revision 4 3–9...
Page 68 DMD50 Universal Satellite Modem Theory of Operation Figure 3-5. Loopback Functional Block Diagram Figure 3-6. Loopback Functional Block Diagram MN-DMD50 Revision 4 3–10...
Page 69: Clocking Options
DMD50 Universal Satellite Modem 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 3-7 gives an overview on how the modem processes the various clocks for the Tx Clock source and the Rx Buffer Clock source.
Page 70: Rx Buffer Clock Options
DMD50 Universal Satellite Modem Theory of Operation 3.7.1.1 SCTE: Serial Clock Transmit External The SCTE clock is the Transmit Terrestrial Clock associated with the data interface. SCTE is an external clock received from the terrestrial equipment and the modem utilizes the terrestrial clock to lock the internal clock.
Page 71: Rx Sat Clock
DMD50 Universal Satellite Modem Theory of Operation Clock Source Priority RX SAT SCTE EXC BNC EXT IDI Refer to Front panel setup menus or Web Browser manual MN-DMDREMOTEOP 3.7.2.1 RX SAT Clock The RX Sat clock is recovered from the satellite that is received from the distant end. If selected the Buffer Clock is lock to the RX sat clock.
Page 72: Ext Ref: External Reference, Top Bnc Port, J10
DMD50 Universal Satellite Modem Theory of Operation 3.7.3 EXT REF: External Reference, Top BNC Port, J10 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 73: Reed-Solomon Codec
DMD50 Universal Satellite Modem Theory of Operation Reed-Solomon Codec Refer to Figure 3-8, Figure 3-9, and Table 3-1. 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.
Page 74 DMD50 Universal Satellite Modem Theory of Operation Figure 3-8. Reed-Solomon Encoder Functional Block Diagram Figure 3-9. Reed-Solomon Decoder Functional Block Diagram Table 3-1. Reed-Solomon Codes Bandwidth Data Rate R-S Code Interleaving Maximum Type of Service Expansion [ (n/k) - (Kbps)
Page 75: Asynchronous Overhead Operation (Framing/Multiplexer Capability)
DMD50 Universal Satellite Modem Theory of Operation 3.10 Asynchronous Overhead Operation (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. This added channel is termed variously “An Overhead Channel”, ”Service Channel”, “Async Channel”...
Page 76: Standard Ibs Mode
Since many of the frame bits in the standard IBS mode are not used, an “Enhanced” Multiplexer Mode has been implemented that can be engaged under software control. Since this mode changes the use of many of the framed non-data bits, this mode is only usable when the DMD50 is at both ends of a link.
Page 77: Esc Backward Alarms
DMD50 Universal Satellite Modem Theory of Operation In this mode, the overhead signaling bytes 16 and 48 can be used to implement a significantly higher speed ES to ES Data Channel under software control. When implemented, this rate is 16...
Page 78: Doubletalk Carrier-In-Carrier Option
CnC was first introduced in Comtech EF Data products in the CDM-Qx Satellite Modem and, more recently, in the CLO-10 Link Optimizer. The implementation of DoubleTalk Carrier-in-Carrier in the Radyne DMD50 has been further refined, and some of the limitations that existed in the CDM-Qx implementation have been overcome.
Page 79: Application Requirements
• Link must be full duplex. • A Radyne DMD50 must be used at the end of the link where the cancellation needs to take place. • The transponder is operated as Loopback. That is, each end of the link must be able to see a copy of its own signal in the return (downlink) path from the satellite.
Page 80 DMD50 Universal Satellite Modem Theory of Operation 4) Link Asymmetries: Various asymmetries in the forward and return link can produce differences in the relative power of the two received signal components. These can be both deterministic (static) or random (and time varying). An example of the former would be the differences resulting from antenna size/gain variations between the two ends of the link.
Page 81: Operational Recommendations
DMD50 Universal Satellite Modem Theory of Operation 3.14.3 Operational Recommendations The rules for CnC operation are summarized below: • Both earth stations share the same footprint so each sees both carriers; • CnC carriers are operated in pairs; • One outbound with multiple return carriers is not allowed;...
Page 82: System Functionality And Operational Considerations
The transponder downlinks the composite signal containing both carriers on the same band to the Radyne DMD50 which then translates the signal to near baseband where it can be filtered (decimated) and then processed as a complex envelope signal. The Radyne DMD50 then suppresses the version of the near end carrier on the downlink side and then passes the desired carrier to the demodulator for normal processing.
Page 83 DMD50 Universal Satellite Modem Theory of Operation DMD50 Satellite Modem DMD50 Satellite Modem Figure 3-12. Same Link Using Radyne DMD50 and DoubleTalk Carrier-in-Carrier Traditional Full Duplex Link Duplex Link with DoubleTalk Carrier-in-Carrier Figure 3-13. Duplex Link Optimization Because acquiring the delay and frequency offset of the interfering carrier is fundamentally a...
Page 84: Doubletalk Carrier-In-Carrier Cancellation Process
DMD50 Universal Satellite Modem Theory of Operation Table 3-4. Spectral Efficiency using DoubleTalk Carrier-in-Carrier Spectral Efficiency (bps/Hz) Modulation Traditional and Code Rate Carrier-in-Carrier SCPC BPSK 1/2 0.50 1.00 QPSK 1/2 1.00 2.00 QPSK 2/3 1.33 2.67 QPSK 3/4 1.50 3.00 QPSK 7/8 1.75...
Page 85 DMD50 Universal Satellite Modem Theory of Operation Figure 3-14. DoubleTalk Carrier-in-Carrier Signals Referring to Figure 3-5: Modem 1 and Modem 2 transmit signals S1 and S2 respectively. The satellite receives, translates, and retransmits the composite signal. The downlink signals S1* and S2*, received at Modem 1 and Modem 2 differ from the transmit signals primarily in terms of phase, frequency, and delay offsets.
Page 86: Margin Requirements
BER. Margin requirements depend on the product, modulation and power ratios: For the Radyne DMD50, the additional margin requirements are as follows: Modulation Nominal Margin*...
Page 87: Symmetric Data Rate Link
DMD50 Universal Satellite Modem Theory of Operation 3.14.9.1 Symmetric Data Rate Link Consider the following example: Satellite & Transponder Galaxy 18 @ 123º W, 13K/13K Earth Station 1 Phoenix, AZ – 4.6 m Earth Station 2 Phoenix, AZ – 2.4 m...
Page 88 DMD50 Universal Satellite Modem Theory of Operation Link parameters and LST summary for QPSK, LDPC 2/3 with Carrier-in-Carrier is as follows: MN-DMD50 Revision 4 3–30...
Page 89 DMD50 Universal Satellite Modem Theory of Operation The link budget summary for the different MODCOD combinations is as follows: Allocated BW Leased BW Savings Compared PSD Ratio S. No. Modulation & FEC PEB (MHz) (MHz) (MHz) to Original (dB) 8-QAM, LDPC 2/3 0.3584...
Page 90: Asymmetric Data Rate Link
DMD50 Universal Satellite Modem Theory of Operation 3.14.9.2 Asymmetric Data Rate Link As occupied (or allocated) bandwidth of a Carrier-in-Carrier circuit is dictated by the larger of the two carriers, it is strongly recommended that the smaller carrier be spread as much as possible using a lower order modulation and/or FEC, while meeting the PSD ratio spec.
Page 91: Power Limited Links
DMD50 Universal Satellite Modem Theory of Operation 3.14.9.3 Power Limited Links Carrier-in-Carrier can provide substantial savings even when the original link is power limited. Spreading the carrier by using a lower modulation and/or FEC along with latest FEC such as VersaFEC can substantially reduce the total power which can then be traded with bandwidth using Carrier-in-Carrier.
Page 92: Carrier-In-Carrier Commissioning And Deployment
DMD50 Universal Satellite Modem Theory of Operation 3.14.10 Carrier-in-Carrier Commissioning and Deployment Prior to commissioning a Carrier-in-Carrier link, it is critical that the link is fully tested in non Carrier-in-Carrier mode and all system issues including external interference, antenna pointing, cabling, SSPA backoff are resolved.
Page 93: Validating Carrier-In-Carrier Performance
DMD50 Universal Satellite Modem Theory of Operation 3.14.11 Validating Carrier-in-Carrier Performance Carrier-in-Carrier performance can be easily validated by verifying that Eb/No degradation due to Carrier-in-Carrier is within published specification for the observed Power Spectral Density Ratio. The following procedure is recommended for validating Carrier-in-Carrier performance:...
Page 94: Operational References
Use this compiled value as the Threshold Eb/No for the link budget 2. Verify that the PDS ration is within spec for the Radyne DMD50. 3. Calculate the Allocated Bandwidth (BW) and Power Equivalent Bandwidth (PEB) for the duplex link: • BW...
Page 95: Estimating Psd Ratio
DMD50 Universal Satellite Modem Theory of Operation 3.14.14 Estimating PSD Ratio PSD can be estimated from a link budget using Downlink EIRP and Symbol Rate: PSD = Downlink EIRP – 10 * Log (Symbol Rate) PSD Ratio Example: Carrier Downlink EIRP...
Page 96: Estimating Psd Ratio From Satmaster
DMD50 Universal Satellite Modem Theory of Operation 3.14.14.2 Estimating PSD Ratio from Satmaster 3.14.14.3 Estimating PSD Ratio Using Spectrum Analyzer PSD Ratio or CnC Ratio can also be estimated using a Spectrum Analyzer capable of integrating the signal power in a given bandwidth.
Page 97: Doubletalk Carrier-In-Carrier Specifications
DMD50 Universal Satellite Modem Theory of Operation 3.14.15 DoubleTalk Carrier-in-Carrier Specifications Requires the two links to share a common carrier frequency (Outbound and Inbound Operating Mode symbol rates do not have to be equal) BSPK/QPSK/8-PSK/8-QAM: –7 dB to +11 dB (ratio of power spectral density,...
Page 98: Glossary
DMD50 Universal Satellite Modem Theory of Operation 3.14.17 Glossary Allocated Bandwidth Bandwidth or Allocated Bandwidth or Occupied Bandwidth is the frequency space required by a carrier on a transponder. For example, a Duplex E1 (2.048 Mbps) Circuit with 8-PSK Modulation, FEC Rate 3/4 and 1.4 Spacing requires: 2.548 MHz = 2.048 / (3 * 0.75) * 1.4 * 2...
Page 99 DMD50 Universal Satellite Modem Theory of Operation Carrier Power (C) to Noise (N) ratio: Unit is dB C/No Carrier Power (C) to Noise Density (N ) ratio: Unit is dBHz Co+No/No Carrier Density (C ) + Noise (N ) to Noise Density (N...
Page 100: Satellite Control Channel (Scc)
Theory of Operation 3.15 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 DMD50 is "PassThru" Mode. 3.15.1...
Page 101: Aggregate Data Rate
DMD50 Universal Satellite Modem Theory of Operation 3.15.2 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.
Page 102: Actual Overhead Rate Calculation
DMD50 Universal Satellite Modem Theory of Operation User Data In-Band Control Aggregate Data Overhead Rate Rate Ratio Rate Ratio 6,312,000 19,200 6,337,606 1.004 6,312,000 19,200 6,350,418 1.006 3.15.4 Actual Overhead Rate Calculation The following is the actual calculation the modem does to calculate the overhead ratio: The modem calculates the minimum in-band rate to limit the size of the user data slots to 2,500 bits (the result is truncated to an integer).
Page 103: Scc Overhead Channel Setup
DMD50 Universal Satellite Modem Theory of Operation 3.15.5 SCC Overhead Channel Setup Set the Framing Mode (located under Mod and Demod Data Menus) to SCC. After doing this, two new menus will appear to the right of the Framing Menu, for both the Mod and Demod.
Page 104: Edmac Satellite Framing/Deframing Mode
“General”. Now move the cursor over to ‘Strap Code’. Click inside the box and enter the new strap code submenu and enter #16. The DMD50 will be automatically configured to the parameters shown below in the highlighted row ‘Strap Code 16’.
Page 105: Chapter 4. User Interfaces
Controls the up, down, right and left motion of the cursor in the LCD Keys Display window Numeric Keypad Allows entry of numeric data and Clear and Enter function keys Front Panel LED See Paragraph 4.1.4 below for an itemized description of these Indicators LEDs MN-DMD50 Revision 4 4–1...
Page 106: Lcd Front Panel Display
DMD50 Universal Satellite Modem User Interfaces 4.2.1 LCD Front Panel Display The front panel display is a 2 line by 16-character LCD display. The display is lighted and the brightness can be set to increase when the front panel is currently in use.
Page 107 DMD50 Universal Satellite Modem User Interfaces 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. Table 4-3. LED Color Reference Color Function Modem LED Indicators...
Page 108: Parameter Setup
DMD50 Universal Satellite Modem User Interfaces Parameter Setup The four Cursor Control Arrow Keys are used to navigate the menu tree and select the parameter to be set. After arriving at a parameter that needs to be modified, depress <ENTER>. The first space of the modifiable parameter highlights (blinks) and is ready for a new parameter to be entered.
Page 109 DMD50 Universal Satellite Modem User Interfaces IDR: (IESS-308) For Data rates 1.544, 2.048, 6.312, 8.448 Mbps Framing Type: 96 Kbps (IDR) Scrambler Type: V.35 Spectrum Mask: Intelsat For Data Rates < 1.544 Framing Type: 1/15 (IBS) Scrambler Type: IESS-309 Spectrum Mask:...
Page 110 DMD50 Universal Satellite Modem User Interfaces DVB: Per EN301-421 & En301-210 Data Rates: All Rates Framing Type: Scrambler Type: Spectrum Mask: DVB 0.25, 0.35 Closed Net: All possible combinations allowed, however, DVB settings requires the DVB network spec. Activates the AUPC Menu.
Page 111 Allows the user to select the Rx 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 DIFF CODING {ENABLED, DISABLE} Allows the user to enable or disable the Differential Encoder.
Page 112 '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 113 Transmit Power from the Remote modem. RADYNE: When configured for Radyne AUPC, the minimum Transmit Power is the lowest power setting that will be used when the remote modem commands a decrease of the Transmit Power from the Local modem.
Page 114 DMD50 Universal Satellite Modem User Interfaces EF AUPC: When configured for EF AUPC, this setting is compared against the local received E and commands to the remote modem to increase or decrease transmit power. NEARSIDE: When configured for NEARSIDE AUPC, this...
Page 115: Demodulator Menu Options And Parameters
‘NO DATA’ will be displayed. When modems are configured for Radyne AUPC, the remote Eb/No will be displayed in the Monitor Menus. REED-SOLOMON (menu) These selections are visible only when the Reed-Solomon Option is installed.
Page 116 DMD50 Universal Satellite Modem User Interfaces IBS: (IESS-309) For Data Rates < 2.048 Mbps Framing Type: 1/15 (IBS) Descrambler Type: IESS-309 Spectrum Mask: Intelsat Drop & Insert: Data Rates: n x 64, n = 1, 2, 3, 4, 5, 6, 8, 10, 12, 15,...
Page 117 DMD50 Universal Satellite Modem User Interfaces MODULATION {QPSK, BPSK, OQPSK, 8PSK, 16QAM} Allows the user to select the demodulation type. SPECTRAL MASK {Intelsat 0.35, DVB 0.35, DVB 0.25, DVB 0.20} Allows the user to set the spectral shape of Tx Data Filter.
Page 118 *This is not a normal mode of operation for the modem. TPC INTERLEAVER {DISABLED, ENABLED} Allows the user to disable or enable TPC Interleaver. Valid only for Radyne turbo codes TPC.495 and TPC.793. DIFF CODING {ENABLED, DISABLE} Allows the user to enable or disable the Differential Decoder.
Page 119 DMD50 Universal Satellite Modem User Interfaces 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. Only displayed when SCC Framing is selected.
Page 120: Interface Menu Options And Parameters
DMD50 Universal Satellite Modem User Interfaces 4.4.4 Interface Menu Options and Parameters 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 121 DMD50 Universal Satellite Modem User Interfaces automatically corrects. If G.703 Interface is selected, this selection cannot be changed. SCT CLK SRC {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.
Page 122 DMD50 Universal Satellite Modem User Interfaces TERR INTERFACE STANDARD INTERFACE {RS422 SERIAL,RS232 SERIAL, V.35} OPTIONAL HARDWARE INTERFACES: {M2P PARALLEL, DVB PARALLEL, ASI} {HSSI} {ETHERNET 10/100 BASE-T} {G.703: T1 AMI, T1 B8ZS, , E1 BAL, E1 UNBAL, T2 BAL, T2 UNBAL, E2} {G.703: T1 AMI, T1 B8ZS, , E1 BAL, E1 UNBAL, T2 BAL,...
Page 123 DMD50 Universal Satellite Modem User Interfaces Allows the user to edit the Tx Edit map and specify the terrestrial slots that will be dropped into the assigned satellite channels. The satellite channels are fixed and the number of channels are determined by the data rate.
Page 124: Monitor Menu Options And Parameters
DMD50 Universal Satellite Modem User Interfaces TX ASYNC MODE (menu) TX ASYNC MODE {ES-ES, ESC ENHANCED} ES-ES is the normal IBS Async Channel. ESC Enhanced can be selected in Closed Net and uses the Overhead Signaling bytes in the IBS Overhead to pass asynchronous data.
Page 125 DMD50 Universal Satellite Modem User Interfaces RAW BER Displays the estimated channel error rate (before decoding) measured by the modem. CORRECTED BER The CBER display shows an estimated corrected bit error rate of the modem. Depending on the symbol rate the modem is...
Page 126: Alarms Menu Options And Parameters
DMD50 Universal Satellite Modem User Interfaces JS4 STATUS {See the note above} Displays the current status of the LAN Port. WAN STATUS {See the note above} Displays the current status of the WAN Port. VOLTAGES (menu) +1.5V RX SUPPLY Displays the measured voltage of the 1.5 Volt Rx power bus located inside the modem.
Page 127 DMD50 Universal Satellite Modem User Interfaces CURRENT ALARMS (menu) TX MAJOR (menu)Status Edit Table FPGA CFG {Pass/Fail, Unmasked/Masked} Indicates a transmit FPGA configuration failure. DSP CFG {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.
Page 128 DMD50 Universal Satellite Modem User Interfaces Indicates the framing unit is unable to find the expected terrestrial framing pattern. DnI M-FRAME LOCK {Pass/Fail, Unmasked/Masked} Indicates the framing unit is unable to find the expected inter- frame pattern. TX DVB FRM LOCK {Pass/Fail, Unmasked/Masked} Indicates that Tx input data stream framing does not match the user selected TX TERR FRAMING.
Page 129 DMD50 Universal Satellite Modem User Interfaces RX MINOR (menu) BUFF UNDERFLOW {Pass/Fail, Unmasked/Masked} Indicates that a Doppler Buffer underflow has occurred. BUFF NEAR EMPTY {Pass/Fail, Unmasked/Masked} Indicates that the Doppler Buffer is about to underflow. BUFF NEAR FULL {Pass/Fail, Unmasked/Masked} Indicates that the Doppler Buffer is about to overflow.
Page 130 DMD50 Universal Satellite Modem User Interfaces Indicates that there are more than one in 1000 bits in error in IBS Mode. RX DVB FRM LOCK {Pass/Fail, Unmasked/Masked} Indicates that the Rx Satellite Data Stream Framing is not DVB. COMMON (menu)
Page 131 DMD50 Universal Satellite Modem User Interfaces EXT CLOCK ACT {Pass/Fail, Unmasked/Masked} Indicates the External Clock activity. EXT REF ACT {Pass/Fail, Unmasked/Masked} Indicates the External Reference activity. EXT REF LOCK {Pass/Fail, Unmasked/Masked} Indicates the External Reference PLL is locked detection. Refer to Section 32H4.4.6, “CURRENT ALARMS (menu)” for an explanation of the Latched Alarms Menu Options and Parameters.
Page 132 DMD50 Universal Satellite Modem User Interfaces SIGNAL LOCK FRAME LOCK MULTIFRAME LOCK LB SYNTH PLL IF SYNTH PLL ETHERNET WAN RX MINOR (menu) BUFF UNDERFLOW BUFF NEAR EMPTY BUFF NEAR FULL BUFF OVERFLOW RX DATA ACTIVITY SAT AIS DnI FRAME LOCK...
Page 133 DMD50 Universal Satellite Modem User Interfaces COMMON (menu) TERR FPGA CFG CODEC FPGA CFG CODEC DEV CFG VOLTAGE (menu) +1.5V RX SUPPLY +1.5V TX SUPPLY +3.3V SUPPLY +5V SUPPLY +12V SUPPLY -12V SUPPLY +20V SUPPLY EXT CLOCK ACT EXT REF ACT...
Page 134: System Menu Options And Parameters
DMD50 Universal Satellite Modem User Interfaces T1E1 SATTERR ALM {PASS, FAIL} MAP SUMMARY {NONE, BK 1; BK 2; BK 1, 2; BK 3; BK 1, 3; BK 2, 3; BK 1, 2, 3; BK 4; BK 1,4; BK 2,4; BK 1, 2,4; BK 3,4; BK 1, 3,4;...
Page 135 DMD50 Universal Satellite Modem User Interfaces BKLT TIMEOUT {00 - 99} Allows the user to enter the length of time (in minutes ) of keyboard inactivity before the backlight shuts off. 00 = no timeout. KEY CLICK {ON, OFF} Allows the user to enable or disable the audible beep each time a key is pressed.
Page 136 DMD50 Universal Satellite Modem User Interfaces TCP/IP (menu) BOOT MODE {DEFAULT, NON-VOL, BOOTP, IP TEST} DEFAULT: During initialization (boot up), the modem will restore the web setting to the standard IP Mask and addresses supplied by the modem. The modem will be taken off the network and will not be accessible. The Default...
Page 137 DMD50 Universal Satellite Modem User Interfaces SERVER IP ADDR {XXX.XXX.XXX.XXX} Hexidecimal Address {ddd.ddd.ddd.ddd} Decimal Address The IP Address of the Boot Server and the address of the SNMP Trap Server when SNMP is active. If a server is used and there is no local router, this address must be consistent with the modem address.
Page 138 DMD50 Universal Satellite Modem User Interfaces The mib2 context allows a user with appropriate authentication to access the mib2 OIDs and the SNMP OIDs. These are of interest primarily to network operators not controlling the satellite link. The dev context allows a user with appropriate authentication to access the device control portion of the MIB.
Page 139 DMD50 Universal Satellite Modem User Interfaces Guest: Users are able to navigate most of the site, and view modem parameter settings. Oper: Users can monitor and and control parameter settings, and change their own authentication passwords. Admin: At this highest access right, the users can monitor and control the modems parameters, change any user’s name and...
Page 140 DMD50 Universal Satellite Modem User Interfaces USER 3 ACCESS GROUP {NO GROUP, GUEST, OPER, ADMIN} Access rights represent the following: No Group: Denies Access Guest: Users are able to navigate most of the site, and view modem parameter settings. Oper: Users can monitor and control parameter settings, and change their own authentication passwords.
Page 141 LARGEST HB GAP Used for factory test only. SOFT RESET {Enter} IF BOARD (menu) Indicates the Radyne part number for the IF Board Assembly. AGC/CTRL/VALUE {0% - 100%} Allows the user to adjust the internal frequency reference for calibration. Only displayed if the system reference clock source is HI STABILITY.
Page 142 DMD50 Universal Satellite Modem User Interfaces FRONT PANEL BOARD Indicates the Radyne assembly number for the front panel board. FEATURES (menu) 5012.2840.2417 {____.____.____} Allows the user to install purchased feature upgrades (see Appendix A). Contact the ustomer Service Department or Sales for hardware and software upgrades.
Page 143: Test Menu Options And Parameters
DMD50 Universal Satellite Modem User Interfaces 4.4.8 Test Menu Options and Parameters TX TEST PATTERN {NONE, 2047, 2^15-1, 2^23-1} Allows the user to enable the tests listed above. RX TEST PATTERN {NONE, 2047, 2^15-1, 2^23-1} Allows the user to enable the tests listed above.
Page 144: Terminal Mode Control
DMD50 Universal Satellite Modem User Interfaces BASEBAND TX: Sends Tx data to the receive input to the BB Card. Carrier TYPE {normal, CW, DUAL, OFFSET, POS FIR, NEG FIR} Allows the user to set the type of carrier. NORMAL: Causes the Modulator to output normal modulation.
Page 145: Terminal Port User Interface
DMD50 Universal Satellite Modem User Interfaces The Terminal Mode uses eight “Screens,” each of which have the basic contents of the three modem monitor and control areas as set in the Front Panel matrix columns. This screen is used for setting the parameters of the Modulator, Demodulator, Event, Alarm, Latched Alarm, Drop Controls, Insert Controls, and Interface Areas.
Page 146: Terminal Screens
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 147: Chapter 5. Rear Panel Interfaces
Connections All connections are made to labeled connectors located on the rear of the unit (refer to Figure 5-1 for the standard unit. Any connection interfacing to the modem must be the appropriate mating connector. MN-DMD50 Revision 4 5–1...
Page 148: Compact Flash
DMD50 Universal Satellite Modem Rear Panel Interfaces Figure 5-1. Universal Satellite Modem Rear Panel Configurations Compact Flash The compact flash slot is located on the right side as viewed from the rear of the unit. A 128 Mbit flash memory card stores all the modem M&C and operational data. It must be present when the modem is operating.
Page 149: Dc Power Input/Switch
Rear Panel Interfaces 5.3.2 DC Power Input/Switch The Optional DC Power Input and Switch (Figure 5-1) is available for all DMD50 products. The unit may be powered from a 48v ± 5vdc VDC source with a maximum unit power consumption of 3 A.
Page 150: Ext Clk (J16)
DMD50 Universal Satellite Modem Rear Panel Interfaces Table 5-2. ALARM Port 15-Pin Female “D” Connector (J15) Pin No. Signal Name Signal Direction Mod Fault - C MF-C No Direction Mod Fault – NC MF-NC No Direction Mod Fault – NO...
Page 151: J18
DMD50 Universal Satellite Modem Rear Panel Interfaces Pin No. Signal Name Signal Direction No Connection No Connection No Connection 5.4.9 J18 Factory use only. 5.4.10 EIA-530 (J19) The EIA-530 Port is an RS-422/V.35/RS-232 Connection. It is a 25-Pin Female “D” Connector.
Page 152: Remote (J20)
The ETHERNET Port (J21) can be used for the Monitor & Control (M&C) Functions of the unit. The physical interface is a standard female RJ-45 Connector. G.703 IDR/IBS Interface (Optional) The DMD50 supports two versions of the G703 IDR/IBS interface. Interface options are G703 T1/E1/T2/E2 or G703 T1/E1/T2/E2/E3/T3 and STS1. MN-DMD50 Revision 4...
Page 153: Esc Alarm (J1)
DMD50 Universal Satellite Modem Rear Panel Interfaces ESC ALARM (J1) The ESC (Engineering Service Circuits) Alarms Port is a 25-Pin Female “D” Connector. Refer to Table 5-6 for pinouts. Table 5-6. ESC ALARM Port 25-Pin Female “D” Connector (J1) Signal Name...
Page 154: Audio (J2)
DMD50 Universal Satellite Modem Rear Panel Interfaces 64K AUDIO (J2) The 64K AUDIO Port allows for communications between Earth Stations. It is a 9-Pin Female “D” Connector that complies with IESS 308. Refer to Table 5-7 for pinouts in audio mode and Table 5-8 for pinouts in 64k mode.
Page 155: K Data (J3)
DMD50 Universal Satellite Modem Rear Panel Interfaces K DATA (J3) The 8K Data Port allows for communications between Earth Stations. It is a 15-Pin Female “D” Connector that complies with IESS 308. Refer to Table 5-9 for pinouts. Table 5-9. 8K DATA Port 15-Pin Female “D” Connector (J3) Pin No.
Page 156: Switch Interface (J5)
DMD50 Universal Satellite Modem Rear Panel Interfaces 5.9.1 SWITCH INTERFACE (J5) The Switch Interface Port is a 68-Pin High-Density Female Connector. Refer to Table 5-11 for pinouts. Table 5-11. SWITCH INTERFACE Port 68-Pin High-Density Female Connector (J5) Pin No. Signal Name...
Page 157: Sd (Ddi) (J6)
DMD50 Universal Satellite Modem Rear Panel Interfaces Pin No. Signal Name Signal Direction IDR ESC Audio Output Channel - 2B ESCAUDRX 2B Output IDR ESC Backward Alarm Input - 4 ESCBWI 4 Input IBS ES Transmit Data – B IDR ESC Backward AlarmInput - 2...
Page 158: Ethernet Data Interface (Optional)
DMD50 Universal Satellite Modem Rear Panel Interfaces 5.10 Ethernet Data Interface (Optional) The optional DMD50 Ethernet Data Interface provides four RJ-45, Auto-Crossover and Auto- Sensing, 10/100 Ethernet Data Ports. JS1 through JS4 may be referred to Port 1 through Port 4 respectively.
Page 159: Asi/Dvb/M2P Interface (Optional)
DMD50 Universal Satellite Modem Rear Panel Interfaces 5.13 ASI/DVB/M2P Interface (Optional) 5.13.1 ASI IN (J1) The ASI IN Port (J1) is supported on the BNC Connector. The interface complies with DVB ASI Electrical Specifications. 5.13.2 ASI OUT (J2) The ASI OUT Port (J2) is supported on the BNC Connector. The interface complies with DVB ASI Electrical Specifications.
Page 160: Dvb/M2P Out (J4)
DMD50 Universal Satellite Modem Rear Panel Interfaces 5.13.4 DVB/M2P OUT (J4) The DVB or M2P OUT Port (J4) is also supported on the DB-25 Female Connector. It complies with RS-422 Electrical Specifications. Refer to Table 5-15 for DVB and Table 5-16 for M2P pinouts for this connector.
Page 161: Ethernet Data Interface (Optional)
DMD50 Universal Satellite Modem Rear Panel Interfaces 5.14 Ethernet Data Interface (Optional) The optional DMD50 Ethernet Data Interface provides four RJ-45, Auto-Crossover, Auto- Sensing, 10/100 Ethernet Data Ports where: JS1 is Port 1 JS2 is Port 2 JS3 is Port 3 JS4 is Port 4 Refer to Figure 5-1 for outline drawings and Appendix E for setup and configuration.
Page 162: Audio (J2)
DMD50 Universal Satellite Modem Rear Panel Interfaces 5.15.1 64K AUDIO (J2) The 64K AUDIO Port allows for communications between Earth Stations. It is a 9-Pin Female “D” Connector that complies to IESS 308. Refer to Table 5-18 for pinouts in audio mode and Table 5-19 for pinouts in 64k mode.
Page 163: Data (J3)
DMD50 Universal Satellite Modem Rear Panel Interfaces 5.15.2 8K DATA (J3) The 8K Data Port allows for communications between Earth Stations. It is a 15-Pin Female “D” Connector that complies with IESS 308. Refer to Table 5-20 for pinouts. Table 5-20. 8K DATA Port 15-Pin Female “D” Connector (J3) Pin No.
Page 164: Esc Alarm (J5)
DMD50 Universal Satellite Modem Rear Panel Interfaces 5.15.4 ESC ALARM (J5) The ESC (Engineering Service Circuits) Alarms Port is a 25-Pin Female “D” Connector. Refer to Table 5-22 for pinouts. Table 5-22. ESC ALARM Port 25-Pin Female “D” Connector (J1) Pin No.
Page 165: Hssi / Ethernet (J1)
Output 5.17 Ethernet Data Interface The DMD50 Ethernet Data Interface provides four RJ-45, Auto-Crossover and Auto-Sensing, 10/100 Ethernet Data Ports. JS1 through JS4 may be referred to Port 1 through Port 4 respectively. Refer to Figure 5-1 for rear panel configurations.
Page 166: Gige Interface
DMD50 Universal Satellite Modem Rear Panel Interfaces 5.18 GigE Interface The optional Ethernet Data Interface provides a three port RJ45 10/100/1000 Base-T Interface. The Ethernet interface supports Auto-Crossover and Auto-Sensing. The Ethernet port are referred to as JS1 through JS4 or JS1 through JS3. Refer to Figures 5-1 for rear panel configurations.
Page 167: Chapter 6. Maintenance And Troubleshooting
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. MN-DMD50 Revision 4 6–1...
Page 168: Alarm Faults
DMD50 Universal Satellite Modem Maintenance and Troubleshooting 6.2.1 Alarm Faults 6.2.1.1 Major Tx Alarms Alarm Possible Cause FPGA CFG Indicates a transmit FPGA hardware failure. DSP CFG Indicates a transmit FPGA failure. SCT Clock PLL Indicates that the Tx SCT Clock PLL is not locked. This alarm will flash on during certain modem parameter changes.
Page 169: Minor Rx Alarms
DMD50 Universal Satellite Modem Maintenance and Troubleshooting 6.2.1.4 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 170: Alarm Masks
DMD50 Universal Satellite Modem Maintenance and Troubleshooting 6.2.2 Alarm Masks The modem performs a high degree of self-monitoring and fault isolation. The alarms for these faults are separated into the following three categories:  Active Alarms  Common Equipment Alarms ...
Page 171: Ibs Fault Conditions And Actions
DMD50 Universal Satellite Modem Maintenance and Troubleshooting IBS Fault Conditions and Actions Figure 6-1 and Table 6-1 illustrate the IBS Fault Conditions and Actions to be taken at the Earth Station, at the Terrestrial Data Stream, and the Satellite. These faults include those detected on the Terrestrial link and those detected from the satellite.
Page 172 DMD50 Universal Satellite Modem Maintenance and Troubleshooting Table 6-1. IBS Fault Conditions and Actions (includes Drop and Insert) Fault Detected on Action to Terrestrial Action to Satellite Terrestrial Link Action In Earth Station (Across Interface H) (Across Interface D) (Across Interface A)
Page 173: Chapter 7. Technical Specifications
{2/3, 3/4, 5/6, 7/8, 8/9} Turbo Product Code (Optional) – (SuperCard ONLY) Turbo (BPSK) {21/44,5/16} Turbo (OQPSK/QPSK) {1/2, 3/4, 7/8} <20Mbps Turbo (8PSK/16QAM) {3/4, 7/8} <20Mbps Turbo (OQPSK/QPSK) {.750, .875} >20Mbps Turbo (8PSK) {.750, .875} >20Mbps MN-DMD50 Revision 4 7–1...
Page 174: Demodulator
DMD50 Universal Satellite Modem Technical Specifications Legacy Turbo Rates {0.495, 0.793} < 5Mbps LDPC/TPC (Optional) <20Mbps LDPC (BPSK) {1/2} LDPC (OQPSK/QPSK) {1/2, 2/3, 3/4} LDPC (8PSK/8QAM) {2/3, 3/4} LDPC (16QAM) {3/4} Turbo (BPSK) {21/44} Turbo (QPSK/OQPSK) {1/2, 2/3, 3/4, 7/8}...
Page 175: Plesiochronous Buffer
Transmit, External, Rx Recovered or SCT (Internal) Monitor and Control Ethernet 10 Base-T/Web Browser, Remote RS-485/Terminal RS-232/DMD15 Protocol Compatible DMD50 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 176: Idr/Esc T3/E3/Sts1 Interface (Optional)
DMD50 Universal Satellite Modem Technical Specifications G.703 T2 (100) 6.312 Mbps, 75 Ohm Unbalanced and 110 Ohm Balanced, B8ZS and B6ZS G.703 E2 8.448 Mbps, 75 Ohm BNC, Unbalanced, HDB3 IDR/ESC T3/E3/STS1 Interface (Optional) G.703 T1 (DSX1) 1.544 Mbps, 100-Ohm Balanced, AMI and B8ZS G.703 E1...
Page 177: Hssi / G703 T2/E2 Max
DMD50 Universal Satellite Modem Technical Specifications 7.16 HSSI / G703 T2/E2 Max HSSI High-Speed Serial Interface, 50-pin SCSI-2 Type Connector (Female) G.703 T1 (DSX1) 1.544 Mbps, 100-Ohm Balanced, AMI and B8ZS G.703 E1 2.048 Mbps, 75-Ohm Unbalanced and 120-Ohm Balanced, HDB3 G.703 T2 (DSX2)
Page 178: Dmd50 Data Rate Limits
DMD50 Universal Satellite Modem Technical Specifications 7.21 DMD50 Data Rate Limits 7.21.1 Non-DVB Modulation Code Rate Min Data Rate Max Data Rate Option Card BPSK NONE 4800 10000000 BPSK VIT 1/2 2400 10000000 BPSK VIT 3/4 3600 10000000 BPSK VIT 7/8...
Page 179: Qpsk
DMD50 Universal Satellite Modem Technical Specifications Modulation Code Rate Min Data Rate Max Data Rate Option Card QPSK TPC 1/2 18000 9545400 LDPC/TPC Card QPSK TPC 3/4 27000 15000000 LDPC/TPC Card QPSK TPC 7/8 31500 17500000 LDPC/TPC Card OQPSK NONE...
Page 180: Dvb
DMD50 Universal Satellite Modem Technical Specifications Modulation Code Rate Min Data Rate Max Data Rate Option Card 8QAM TPC 3/4 40500 20000000 LDPC/TPC Card 8QAM TPC 7/8 48000 20000000 LDPC/TPC Card 8QAM LDPC 2/3 36000 20000000 LDPC/TPC Card 8QAM LDPC 3/4...
Page 181 DMD50 Universal Satellite Modem Technical Specifications 188 Mode Modulation Code Rate Min Data Rate Max Data Rate BPSK VIT 1/2 2400 4607843 BPSK VIT 2/3 2950 6143790 BPSK VIT 3/4 3318 6911764 BPSK VIT 5/6 3687 7679738 BPSK VIT 7/8...
Page 182: Dmd50 Ber Specifications
Specification 1/2 Rate Specification 3/4 1E-7 Rate Specification 7/8 1E-8 Rate 1E-9 Eb/No in dB Figure 7-1 – DMD50 B/O/QPSK BER Performance (Viterbi) Note: Eb/No values include the effect of using Differential Decoding and V.35 descrambling. MN-DMD50 Revision 4 7–10...
Page 183: Ber Performance (Sequential)
Specification 1/2 Rate 1E-7 Specification 3/4 Rate 1E-8 Specification 7/8 Rate 1E-9 Eb/No in dB Figure 7-2 – DMD50 B/O/QPSK BER Performance (Sequential) Note: Eb/No values include the effect of using Differential Decoding and V.35 descrambling. MN-DMD50 Revision 4 7–11...
Page 184: Ber Performance (Viterbi With Reed-Solomon)
1E-6 Specification 1/2 Rate 1E-7 Specification 7/8 Rate Specification 3/4 Rate 1E-8 1E-9 Eb/No in dB Figure 7-3 – DMD50 B/O/QPSK BER Performance (Viterbi – w/RS) Note: Eb/No values include the effect of using Differential Decoding. MN-DMD50 Revision 4 7–12...
Page 185: Ber Performance (Turbo)
1E-3 1E-4 1E-5 1E-6 1E-7 Specification Turbo 0.495 1E-8 Specification Turbo 0.793 1E-9 Eb/No in dB Figure 7-4 – DMD50 B/O/QPSK BER Performance (Turbo) Note: Eb/No values include the effect of using interleaving and maximum iterations. MN-DMD50 Revision 4 7–13...
Page 186: Ber Performance (8Psk Trellis)
1E-5 1E-6 Specification 2/3 Rate 1E-7 Specification 2/3 Rate w/RS 1E-8 1E-9 Eb/No in dB Figure 7-5 – DMD50 8PSK BER Performance (Trellis) Note: Eb/No values include the effect of using Differential Decoding and V.35 Descrambling. MN-DMD50 Revision 4 7–14...
Page 187: Ber Performance (8Psk Turbo)
Decoder Typical Performance 1E-3 1E-4 1E-5 1E-6 1E-7 1E-8 Specification Turbo 0.793 1E-9 Eb/No in dB Figure 7-6 – DMD50 8PSK BER Performance (Turbo) Note: Eb/No values include the effect of using interleaving and maximum iterations. MN-DMD50 Revision 4 7–15...
Page 188: Ber Performance (16Qam Viterbi)
1E-4 1E-5 1E-6 Specification 3/4 Rate 1E-7 Specification 7/8 Rate 1E-8 1E-9 Eb/No in dB Figure 7-7 – DMD50 16QAM BER Performance (Viterbi) Note: Eb/No values include the effect of using Differential Decoding and V.35 Descrambling. MN-DMD50 Revision 4 7–16...
Page 189: Ber Performance (16Qam Viterbi With Reed-Solomon)
1E-4 1E-5 1E-6 Specification 1E-7 3/4 Rate w/RS Specification 7/8 Rate w/RS 1E-8 1E-9 Eb/No in dB Figure 7-8 – DMD50 16QAM BER Performance (Viterbi w/RS) Note: Eb/No values include the effect of using Differential Decoding. MN-DMD50 Revision 4 7–17...
Page 190: Ber Performance (16Qam Turbo)
Typical Performance 1E-3 1E-4 1E-5 1E-6 Turbo 0.495 1E-7 Turbo 0.793 1E-8 1E-9 Eb/No in dB Figure 7-9 – DMD50 16QAM BER Performance (Turbo) Note: Eb/No values include the effect of using interleaving and maximum iterations. MN-DMD50 Revision 4 7–18...
Page 191: Ber Performance ((O)Qpsk Turbo)
1E-1 B/O/QPSK Uncoded Theory 1E-2 Turbo Decoder Specification 3/4 Rate 1E-3 1E-4 Specification Specification 1/2 Rate 7/8 Rate 1E-5 1E-6 1E-7 Typical Performance 1E-8 1E-9 Eb/No in dB Figure 7-10 – DMD50 (O)QPSK BER Performance (Turbo) MN-DMD50 Revision 4 7–19...
Page 192: Ber Performance (8Psk Turbo)
BER Performance (8PSK Turbo) 1E-1 8PSK Uncoded Theory 1E-2 Turbo Decoder Specification 3/4 Rate 1E-3 Specification 7/8 Rate 1E-4 Typical Performance 1E-5 1E-6 1E-7 1E-8 1E-9 Eb/No in dB Figure 7-11 – DMD50 8PSK BER Performance (Turbo) MN-DMD50 Revision 4 7–20...
Page 193: Ber Performance (16Qam Turbo)
BER Performance (16QAM Turbo) 1E-1 16QAM Uncoded Theory Turbo Decoder 1E-2 Specification 3/4 Rate Specification 7/8 1E-3 Rate 1E-4 Typical Performance 1E-5 1E-6 1E-7 1E-8 1E-9 Eb/No in dB Figure 7-12 – DMD50 16QAM BER Performance (Turbo) MN-DMD50 Revision 4 7–21...
Page 194: 1/2 Rate B/O/Qpsk Ber Performance (Ldpc)
B/O/QPSK Uncoded Theory 1E-2 1/2 Rate LDPC B/O/QPSK Uncoded Theory Decoder 1E-3 1E-4 Specification 1/2 Rate 1E-5 1E-6 Typical Performance 1E-7 1E-8 1E-9 Eb/No in dB Figure 7-13 – DMD50 Rate 1/2 B/O/QPSK BER Performance (LDPC) MN-DMD50 Revision 4 7–22...
Page 195: 2/3 Rate Q/8Psk/8Qam Ber Performance (Ldpc)
1E-02 2/3 Rate LDPC B/O/QPSK Uncoded Theory Decoder 1E-03 QPSK Specification 1E-04 Typical 8QAM Performance Specification 1E-05 8PSK Specification 1E-06 1E-07 1E-08 1E-09 Eb/No in dB Figure 7-14 – DMD50 Rate 2/3 Q/8PSK/8QAM BER Performance (LDPC) MN-DMD50 Revision 4 7–23...
Page 196: 3/4 Rate Q/8Psk, 8/16Qam Ber Performance (Ldpc)
1E-02 2/3 Rate LDPC B/O/QPSK Uncoded Theory Decoder 1E-03 QPSK Specification 1E-04 Typical 8QAM Performance Specification 1E-05 8PSK Specification 1E-06 1E-07 1E-08 1E-09 Eb/No in dB Figure 7-15 – DMD50 Rate 2/3 Q/8PSK/8QAM BER Performance (LDPC) MN-DMD50 Revision 4 7–24...
Page 197 DMD50 Universal Satellite Modem Technical Specifications Table 7-1 - 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 198 DMD50 Universal Satellite Modem Technical Specifications Table 7-4 - B/O/QPSK BER Performance (Turbo) Specification Typical Turbo 0.495 Turbo 0.793 Turbo 0.495 Turbo 0.793 1E-3 2.5 dB 3.3 dB 2.2 dB 3 dB 1E-4 2.7 dB 3.7 dB 2.3 dB 3.2 dB...
Page 199 DMD50 Universal Satellite Modem Technical Specifications Table 7-7 - 16QAM BER Performance (Viterbi) Specification Typical 3/4 Rate 7/8 Rate 3/4 Rate 7/8 Rate 1E-3 8.9 dB 10.3 dB 8.1 dB 9.5 dB 1E-4 9.8 dB 11.1 dB 9 dB 10.3 dB 1E-5 10.7 dB...
Page 200 DMD50 Universal Satellite Modem Technical Specifications Table 7-10 - (O)QPSK BER Performance (Turbo) Specification Typical 1/2 Rate 3/4 Rate 7/8 Rate 1/2 Rate 3/4 Rate 7/8 Rate 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 201 DMD50 Universal Satellite Modem Technical Specifications Table 7-14 - 8PSK / 8-QAM Rate BER Performance (LDPC) 8PSK 8-QAM Specification Typical Specification Typical 2/3 Rate 3/4 Rate 2/3 Rate 3/4 Rate 2/3 Rate 3/4 Rate 2/3 Rate 3/4 Rate 1E-5 5.6 dB 5.2 dB...
Page 202: Acg Output Voltage
DMD50 Universal Satellite Modem Technical Specifications 7.22.16 ACG Output Voltage The AGC Output Voltage is a function of the Input Power Level in dBm. The AGC Output Voltage is found on the Alarm connector Pin 14 of J15. Figure 7-13. AGC Voltage Monitor MN-DMD50 Revision 4 7–30...
Page 203: Appendix A. Product Options
HSSI High-Speed Serial Interface 50-Pin SCSI-2 Type Connector. Complies with Cisco Systems in HSSI Design Specification, Revision 3.0. Ethernet Data Interface Four RJ-45, Auto-Crossover, Auto-Sensing, 10/100 Ethernet Data Ports. Complies with IEEE 802.3 and IEEE 802.3u. MN-DMD50 Revision 4 A–1...
Page 204: Hssi
DMD50 Universal Satellite Modem Product Options HSSI / G.703 High-Speed Serial Interface 50-Pin SCSI-2 Type Connector. Complies with Cisco Systems in HSSI Design Specification, Revision 3.0. The G.703 interface supports T1, E1, T2, E2 rates balanced or unbalanced. It does not support backward alarms.
Page 205: Appendix B. Front Panel Upgrade Procedure
HW & KEY REQ indicates that additional hardware is required to support the option. Contact your Radyne sales representative for more information regarding the required hardware upgrade. KEY CODE REQ indicates that the desired option is available as a front panel upgrade.
Page 206 DMD50 Universal Satellite Modem Front Panel Upgrade Procedure 2. Contact Radyne with the Unit ID and Desired Upgrades. The modem’s Unit ID can be found on the front panel as follows: a. From the modem’s Main Menu, scroll right to the SYSTEM Menu.
Page 207: Demonstration Procedure
HW & KEY REQ indicates that additional hardware is required to support the option. Contact your Radyne sales representative for more information regarding the required hardware upgrade. KEY CODE REQ indicates that the desired option can be enabled as a demonstration from the front panel.
Page 208 DMD50 Universal Satellite Modem Front Panel Upgrade Procedure 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.
Page 209: Running In Demonstration Mode
DMD50 Universal Satellite Modem Front Panel Upgrade Procedure B.4.1 Running in Demonstration Mode Because of the possible interruption in traffic when the demonstration mode expires, several indicators are used to inform an operator that the modem is indeed, operating in demonstration mode.
Page 210: Canceling Demonstration Mode
DMD50 Universal Satellite Modem Front Panel Upgrade Procedure B.4.2 Canceling Demonstration Mode At any time, a demonstration may be canceled and have the modem return to its normal operation. Once the demonstration has been canceled, it cannot be restarted using the old demonstration code.
Page 211: Appendix C. Carrier Control
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. MN-DMD50 Revision 4 C–1...
Page 212: Carrier Vsat
DMD50 Universal Satellite Modem Carrier Control Carrier VSat Modulator output is turned off before reprogramming modulator functions that may alter the output spectrum through the front panel, and the user is required to enter “Yes” to re-enable output after the change. When using the terminal, the modulator is turned off while re- programming modulator functions that may alter the output spectrum, and the user is required to manually turn on the output after the reprogramming (same as “Carrier On”).
Page 213: Introduction
Appendix G in the manual. For additional information on the various WEB configurations and descriptions refer to the Remote Protocol Manual MN-DMDREMOTEOP. To verify that the Radyne product is configured with the Web interface, use the products front panel <SYSTEM> control screen and verify that the WEB sub menu is visible. Contact the Radyne Customer Service Department if the WEB feature is not displayed on the front panel to identify the product is upgradeable.
Page 214 3. USER 2: This has the same menu structure as USER 1. 4. USER 3: This has the same menu structure as USER 1. Radyne’s Web configuration allows for the support of 3 user profiles. These are configured through the ‘PASSWORD/SETUP ACCESS section in the Web Browser.
Page 215: Change Web User Name
Complete technical specifications, and product options are also available in a PDF format at the bottom of the screen. Links to the Radyne Corporation website and Customer service is also accessible provided access to the internet is available.
Page 216 DMD50 Universal Satellite Modem Web Browser Setup Guide Figure D-1. WEB Browser Introduction Page To navigate to other parts of the site, the modem needs to know who the user is to allow assignment of the proper level of transactions and resources. This authentication is done through the use of a username and password.
Page 217 Web Page Appearance This page displays the Monitor and Control section of the modem web interface. With a front panel look and feel, and an appearance that resembles the DMD50 layout. Figure D-3. Monitor and Control Web Page The top of the web page displays an alarm section reflecting the current front panel status of the modem.
Page 218 DMD50 Universal Satellite Modem Web Browser Setup Guide BLANK PAGE MN-DMD50 Revision 4 D–6...
Page 219: Appendix E. Strap Codes
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 2048 16/15 QPSK 1544 V.35 (IESS) QPSK 2048 V.35 (IESS) QPSK 6312 V.35 (IESS) QPSK MN-DMD50 Revision 4 E–1...
Page 220 DMD50 Universal Satellite Modem Strap Codes Strap Codes Dis = Disable 8448 V.35 (IESS) QPSK NONE V.35 (IESS) QPSK NONE V.35 (IESS) QPSK NONE V.35 (IESS) QPSK NONE V.35 (IESS) QPSK NONE V.35 (IESS) QPSK NONE V.35 (IESS) QPSK NONE V.35 (IESS)
Page 221 DMD50 Universal Satellite Modem Strap Codes Strap Codes Dis = Disable 1920 16/15 QPSK 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)
Page 222 DMD50 Universal Satellite Modem Strap Codes Strap Codes Dis = Disable 1024 16/15 QPSK 1024 16/15 QPSK 1536 16/15 QPSK 1088 16/15 QPSK 1088 16/15 QPSK 1152 16/15 QPSK 1152 16/15 QPSK 1216 16/15 QPSK 1216 16/15 QPSK 1280 16/15...
Page 223: Sample Applications
DMD50 Universal Satellite Modem Strap Codes Strap Codes Dis = Disable 4000 NONE V.35 (IESS) QPSK 4000 NONE V.35 (IESS) QPSK 1344 16/15 QPSK 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.
Page 224: Case 1: Idr 8.448 Mbps, 3/4 Rate Viterbi
DMD50 Universal Satellite Modem Strap Codes E.3.1 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 225: Case 2: Ibs 1.544 Mbps, 3/4 Rate Viterbi
DMD50 Universal Satellite Modem Strap Codes E.3.2 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 226: Case 3: Closed Network, 3/4 Rate Viterbi, Ibs Overhead
DMD50 Universal Satellite Modem Strap Codes E.3.3 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 227: Case 4: Loop Timing Example
DMD50 Universal Satellite Modem Strap Codes E.3.4 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...
Page 228 DMD50 Universal Satellite Modem Strap Codes BLANK PAGE MN-DMD50 Revision 4 E–10...
Page 229: Appendix F. Tcp/Ip Ethernet Setup
Network Manager. This should be consistent with the tag expected by the users Bootp Server (see the next menu selection for setting the BOOTp TAG). If Bootp is not enabled, the modem will ignore the BOOTp Tag setting. MN-DMD50 Revision 4 F–1...
Page 230 6. SERVER IP ADDR: This allows for the setup of the Network Server IP Address. This section refers to the Host that will be used to optionally boot the DMD50 on power-up and is the SNMP Trap Server. This IP Address needs to be consistent with the Modem IP Address. Broadcast and loop back addresses will not be allowed.
Page 231: Network Configuration Summary
DMD50 Universal Satellite Modem TCP/IP Ethernet Setup Network Configuration Summary If the above steps were followed and the information was entered, then the following would be the TCP / IP configuration summary for a ‘no router specified’ setup: 1. Boot Mode = NON-VOL 2.
Page 232 DMD50 Universal Satellite Modem TCP/IP Ethernet Setup The Computer TCP/IP must be properly configured in order to obtain connectivity. The following set-up procedure can be used as a guide to aide in this setup. The following instructions apply only to Windows 2000 or XP Classic.
Page 233 DMD50 Universal Satellite Modem TCP/IP Ethernet Setup Figure F-3. Local Area Connection Properties Box 4. Select “Use the following IP Address”. Enter in the IP Address that is offset by 5 or so numbers from the equipment address (the computer and the equipment that it is connecting to can not have identical addresses) and Subnet Mask ( this is identical to the subnet mask programmed into the equipment) into the corresponding fields.
Page 234: Testing The Ethernet Connection Using The Ping Program (Optional
DMD50 Universal Satellite Modem TCP/IP Ethernet Setup Testing the Ethernet Connection using the Ping Program (Optional) Make sure that connectivity and settings are correct. The Ping command will report if the Host (Equipment) is responding correctly. Open the MSDOS command prompt and do a Ping command as described: 1.
Page 235: Appendix G. Aupc Operation
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 236: Ef Aupc
DMD50 Universal Satellite Modem AUPC Operation When the rain diminishes, Local modem will see the remote E begin to increase. Local modem will lower its power level. The operation is therefore a feedback control loop with the added complication of a significant time delay.
Page 237 DMD50 Universal Satellite Modem AUPC Operation 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. The AUPC Menu Functions and their descriptions are shown on Tables G-1 and G-2.
Page 238 DMD50 Universal Satellite Modem AUPC Operation BLANK PAGE MN-DMD50 Revision 4 G–4...
Page 239: Appendix H. Drop And Insert (D&I
CCITT G.704 and a fractional Nx64 Kbps Satellite Channel. The Drop and Insert functionality conforms to IBS, small IDR, and Radyne Proprietary Efficient D&I Framing Structures. For information pertaining to Radyne proprietary Efficient Drop and Insert function, refer to Appendix I.
Page 240 DMD50 Universal Satellite Modem Drop and Insert (D&I) Figure H-1. Looped Modems Figure H-2. Looped Modems with Separate D&I Trunks MN-DMD50 Revision 4 H–2...
Page 241: Drop Only
DMD50 Universal Satellite Modem Drop and Insert (D&I) H.1.1 Drop Only When Drop is enabled and Insert is disabled, the unit 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, and the unaltered terrestrial data is output via the Send Data Out Port (refer to Figure H-3).
Page 242: Mode Selection
DMD50 Universal Satellite Modem Drop and Insert (D&I) Figure H-5. Insert Only with Internal Frame Source H.1.3 Mode Selection 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.
Page 243: Multidestinational Systems
DMD50 Universal Satellite Modem Drop and Insert (D&I) H.1.3.3 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.
Page 244 DMD50 Universal Satellite Modem Drop and Insert (D&I) Figure H-6. Multidestinational Communications Example : For a modem w/ Drop & Insert enabled at a data rate of 256 (with timeslots assigned 1 - 1, 2 - 2, etc.). At a data rate of 256, the modem will allow 4 channels to assign timeslots. Under the Tx Menu, assign the timeslots that are to be used to the 4 channels.
Page 245: Configuring The Modem For Drop And Insert
DMD50 Universal Satellite Modem Drop and Insert (D&I) For the Receive Side: With Rx Side Channels configured as follows: CH1 to TS1, CH2 to TS2, CH3 to TS3, and CH4 to TS4. After the timeslots are assigned properly, scroll to the Mapping Menu and use the above procedure to enter the settings into the modem.
Page 246: Operational Network Specification
DMD50 Universal Satellite Modem Drop and Insert (D&I) • It contributes to the Terrestrial Framing Mode selection process. Trying to select a T1-type Drop Mode such as T1-ESF with the mod data rate set to 1920000 bps (a valid E1 D&I rate but not a valid T1 rate) will result in the error message ‘INVALID DROP MODE’...
Page 247 DMD50 Universal Satellite Modem Drop and Insert (D&I) 1920000 bps will result in an error message. In turn, the selection of the terrestrial framing formats influences the satellite channel to terrestrial timeslot mappings in the following manner: The selection of T1-D4, T1-ESF, or SLC-96 type terrestrial framing format limits the terrestrial timeslots to values from 1 - 24.
Page 248: D&I Sample Configurations And D&I Clock Setup Options
DMD50 Universal Satellite Modem Drop and Insert (D&I) H.2.4 D&I Sample Configurations and D&I Clock Setup Options The following are several examples of how to configure the modem for D&I. Also, refer to Figures 3-14 through 3-17 for the D&I Clocking Setup Options Available.
Page 249 DMD50 Universal Satellite Modem Drop and Insert (D&I) Under Demodulator: Under Demod IF: Set Frequency to desired value Under Demodulator: Set Network Spec. = Drop & Insert Example 2: Multidestinational Remote Site Programming Drop 512 Kbps from a T1 trunk, 3/4 Rate Viterbi.
Page 250 DMD50 Universal Satellite Modem Drop and Insert (D&I) Figure H-7. Transmit Trunk and Receive Trunk Figure H-8. Single Trunk Figure H-9. Rx Only With Trunk MN-DMD50 Revision 4 H–12...
Page 251: D&I Maps And Map Editing
DMD50 Universal Satellite Modem Drop and Insert (D&I) Figure H-10. Rx Only No Trunk 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 4-5).
Page 252 DMD50 Universal Satellite Modem Drop and Insert (D&I) The Modem is equipped with eight permanently stored default maps, which are designated ROM 1 through ROM 8. The user may also define, modify, and save an additional eight maps which are designated USER 1 through USER 8.
Page 253 DMD50 Universal Satellite Modem Drop and Insert (D&I) The mapping of channels to time slots is arbitrary; it is not necessary to map CH1 to TS1, CH2 to TS2, etc. The channel to the time slot mapping may be in any order within the constraints of the number of available channels.
Page 254 DMD50 Universal Satellite Modem Drop and Insert (D&I) ROM Map 7 could also be used as the template for an Active Transmit (Drop) and/or Active Receive (Insert) Map with a modulator and/or demodulator configured for 1024 Kbps operation. This would be used with T1 or E1 frames where channels 1 through 16 are mapped into time slots 1 through 16 (in any order).
Page 255: Appendix I. Efficient Drop And Insert (D&I
Interface card installed and Drop & Insert option must be enabled. If the modem does not have the required hardware and/or feature set enabled, contact your Radyne sales representative to order the appropriate hardware and/or feature set upgrade. If the 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 256: Efficient Drop & Insert Mode
DMD50 Universal Satellite Modem Efficient Drop and Insert (D&I) AUPC INSTALLED optional, required if desired Efficient Drop & Insert Mode With Efficient Drop & Insert, the terrestrial interface selections, terrestrial framing modes, terrestrial to satellite mapping, ES to ES channel, satellite and terrestrial backward alarm functionality, and the In Station Prompt and Deferred Service alarm operation are identical to that of the Drop &...
Page 257: Calculating The Required Satellite Bandwidth
Automatic Uplink Power Control. By comparison, the Drop & Insert 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 258 DMD50 Universal Satellite Modem Efficient Drop and Insert (D&I) Summary and Examples: The following examples further illustrate how to calculate the Efficient D&I rate which can be summarized for N timeslots as: Efficient D&I Rate Data Rate + (N * 250 bps)
Page 259 DMD50 Universal Satellite Modem Efficient Drop and Insert (D&I) Example 2b: Change to E1-PCM30 framing (E1 Signaling), standard ES to ES overhead Add 10 * 2000 bps to our previous calculation gives 662500 bps Still saving over 20,000 bps compared to the Drop & Insert open network standard.
Page 260 DMD50 Universal Satellite Modem Efficient Drop and Insert (D&I) BLANK PAGE MN-DMD50 Revision 4 I–6...
Page 261: Appendix J. Ethernet Data Interface Setup
The throttling mechanism used depends upon the interface and whether it is half-duplex or full duplex. J.1.1.1 Half-Duplex Flow Control In half-duplex mode, the unit uses industry standard backpressure to support flow control as follows: MN-DMD50 Revision 4 J–1...
Page 262: Ethernet Daisy Chain
DMD50 Universal Satellite Modem Ethernet Data Interface Setup When available buffer space is almost gone, the modem 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.
Page 263: Setting Up The Dmd20/Dmd20 Lbst Ethernet Bridge To Operate Like A Fifo
DMD50 Universal Satellite Modem Ethernet Data Interface Setup J.1.5 Setting Up The DMD20/DMD20 LBST Ethernet Bridge To Operate Like A FIFO In certain circumstances, it may be desirable to have the Ethernet interface operate in a FIFO like manner with no reordering of packets. This can be established by using a single port on the Ethernet interface and setting the Ethernet QOS Type to Port Based and the Ethernet QOS Queue to Strict Priority.
Page 264: Packet Statistics
DMD50 Universal Satellite Modem Ethernet Data Interface Setup J.1.6 Packet Statistics The following statistics are available under the Monitor Menu when the Ethernet Data Interface is selected. Total Packets: This Counter displays the total number of Ethernet packets received from the satellite.
Page 265: Metric Conversions
METRIC CONVERSIONS Units of Length Unit Millimeter Centimeter Inch Foot Yard Meter Kilometer Mile 1 millimeter 0.0394 0.0033 0.0011 0.001 1 x 10 6.214 x 10 1 centimeter 0.3937 0.0328 0.0109 0.01 1 x 10 6.214 x 10 1 inch 25.4 2.54 0.0833...
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Radyne DMD50 Installation And Operation Manual

Chapter 1. Introduction

Overview

Configurations

Function Accessibility

Chapter 2. Installation

Unpacking and Inspection

Installation Requirements

Installation Considerations

Initial Configuration Check

Modulator Checkout

Chapter 3. Theory of Operation

Modem Hardware

Functional Block Diagram

Monitor & Control (M&C) Subsystem

Async Port / ES-ES Communications

Internal Clock

2 B L Oopback Features (Terrestrial & IF)

Clocking Options

RS530/422/V.35 Interface (Standard)

Reed-Solomon Codec

Asynchronous Overhead Operation (Framing/Multiplexer Capability)

Standard IBS Mode

Asynchronous Multiplexer Mode

ESC Backward Alarms

Doubletalk Carrier-In-Carrier Option

Satellite Control Channel (SCC)

EDMAC Satellite Framing/Deframing Mode

Locating the ID Code Operational Procedure

Strap Codes

Chapter 4. User Interfaces

User Interfaces

Front Panel User Interface

Parameter Setup

Front Panel Control Screen Menus

Terminal Mode Control

Terminal Port User Interface

Connecting the Terminal

Terminal Screens

RS485 Remote Port Interface (RLLP Protocol)

Chapter 5. Rear Panel Interfaces

Connections

Compact Flash

Power Input Modules

Chassis Connections (Standard)

IDR/IBS Interface (Optional)

Esc Alarm (J1)

Audio (J2)

K Data (J3)

Bal (J4)

Ethernet Data Interface (Optional)

High-Speed Serial Interface (HSSI) (Optional)

Hssi (J6)

ASI/DVB/M2P Interface (Optional)

Ethernet Data Interface (Optional)

HSSI / Ethernet (J1)

Ethernet Data Interface

Gige Interface

Troubleshooting

Chapter 6. Maintenance and Troubleshooting

Periodic Maintenance

IBS Fault Conditions and Actions

Chapter 7. Technical Specifications

Data Rates

Modulator

Demodulator

Plesiochronous Buffer

Monitor and Control

DMD50 Drop and Insert (Optional)

Terrestrial Interfaces

IDR/ESC T2/E2 Interface (Optional)

IDR/ESC T3/E3/STS1 Interface (Optional)

Ibs/Synchronous Interface (Standard)

High-Speed Serial Interface (HSSI)

Asi

Dvb/M2P

Ethernet Data Interface (Optional)

Gigi Ethernet Data Interface (Optional)

HSSI / G703 T2/E2 Max

HSSI / G703 T3/E3/STS1 Max