Comtech EF Data SLM-5650 Installation And Operation Manual
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Comtech EF Data SLM-5650 Installation And Operation Manual

Satellite modem
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SLM-5650
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/SLM5650.IOM
Revision 2

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Summary of Contents for Comtech EF Data SLM-5650

  • Page 1: Installation And Operation Manual

    SLM-5650 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/SLM5650.IOM Revision 2...
  • Page 3 Errata A Comtech EF Data Documentation Update Subject: Changes to Front Cover and Section B.4, Basic Protocol Date: October 15, 2007 Original Manual MN/SLM5650.IOM Rev 2 Part Number/Rev: ER-SLM5650.EA2 Errata Number: Agile Document ID ER-SLM5650.EA2 Agile CO Number CO1453 Change Specifics: This information will be incorporated into the next revision.
  • Page 4 This page is intentionally blank. AGILE DOC ID ER-SLM5650.EA2 THIS DOCUMENT IS NOT SUBJECT TO REVISION/UPDATE! AGILE CO1453...
  • Page 5 Errata B Comtech EF Data Documentation Update Subject: Changes to Chapter 2. Installation Date: October 9, 2008 Original Manual MN/SLM5650.IOM Rev 2 Part Number/Rev: Agile Document ID ER-SLM5650.EB2 Agile CO Number C05284 Change Specifics: In Chapter 2. INSTALLATION, Sect. 2.3.8 Auxiliary Connector (J9), Page 2-9: Revise the pinout table for the 15-pin connector as follows: From: This information will be incorporated into the next manual revision.
  • Page 6 This page is intentionally blank. ER-SLM5650.EB2 C05284 AGILE DOC ID THIS DOCUMENT IS NOT SUBJECT TO REVISION/UPDATE! AGILE...
  • Page 7 SLM-5650 Satellite Modem Installation and Operation Manual Comtech EF Data is an ISO 9001 Registered Company. Part Number MN/SLM5650.IOM Revision 2 August 19, 2006 Copyright © Comtech EF Data, 2006. 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 8: Customer Support

    Customer Support Contact the Comtech EF Data Customer Support Department for: • Product support or training • Information on upgrading or returning a product • Reporting comments or suggestions concerning manuals A Customer Support representative may be reached at: Comtech EF Data Attention: Customer Support Department 2114 West 7th Street Tempe, Arizona 85281 USA...

  • Page 9: Table Of Contents

    Table of Contents CHAPTER 1. INTRODUCTION......................1–1 Introduction 1–1 1.1.1 Features............................ 1–2 1.1.2 Options............................1–3 Modem Design 1–3 Modem Description 1–3 Operating Modes 1–5 1.4.1 Closed Networks........................1–5 1.4.2 Open Networks (INTELSAT) ....................1–5 1.4.3 OM-73 ............................1–5 Data Interfaces 1–5 1.5.1 TIA/EIA-530 ..........................
  • Page 10 SLM-5650 Satellite Modem Revision 2 Preface 1.8.3 Data Quality Performance ...................... 1–11 1.8.3.1 OM-73 Compatible Mode Performance ..............1–11 1.8.3.2 MIL-STD-188-165A Compatible Mode Performance ..........1–11 1.8.3.3 IESS-308 Compatible Mode Performance .............. 1–12 1.8.3.4 IESS-309 Compatible Mode Performance .............. 1–12 1.8.3.5 IESS-310 Compatible Mode Performance ..............
  • Page 11 SLM-5650 Satellite Modem Revision 2 Preface CHAPTER 3. CONFIGURATION......................3–1 Modes 3–1 Clocking Options 3–11 3.2.1 IDR/IBS G.703 Master/Master ....................3–11 3.2.2 IDR/IBS G.703 Master/Slave ....................3–11 Buffering 3–14 Doppler 3–17 Plesiochronous 3–18 Frame/Multiframe Length 3–19 3.6.1 Multiples of the Frame Length ....................3–19 3.6.2 Total Buffer Length .........................
  • Page 12 SLM-5650 Satellite Modem Revision 2 Preface CHAPTER 5. MAINTENANCE......................5–1 System Checkout 5–1 5.1.1 Checkout........................... 5–2 5.1.2 Interface Checkout........................5–2 5.1.3 Modulator Checkout........................5–3 Demodulator Checkout 5–6 Fault Isolation 5–9 System Faults/Alarms 5–10 APPENDIX A. OPTIONS ........................A–1 APPENDIX B. REMOTE CONTROL ....................B–1 APPENDIX C.
  • Page 13 SLM-5650 Satellite Modem Revision 2 Preface Figures Figure 1-1. SLM-5650 ..........................1–1 Figure 1-2. SLM-5650 Block Diagram...................... 1–4 Figure 1-3. Dimensional Envelope......................1–18 Figure 2-1. Typical Installation of Side-Railings, FP/SL0006..............2–2 Figure 2-2. Typical Customized Rack ...................... 2–3 Figure 2-3. Rear Panel..........................2–4 Figure 3-1.
  • Page 14 SLM-5650 Satellite Modem Revision 2 Preface Tables Table 1-1. Summary of Specification ....................... 1–8 Table 1-2. Acquisition and Timing Performance Requirements ............1–10 Table 1-3. Doppler Requirements......................1–11 Table 1-4. Viterbi Decoder BER......................1–13 Table 1-5. Viterbi Decoder with Reed-Solomon BER ................1–13 Table 1-6.

  • Page 15: About This Manual

    SLM-5650 Satellite Modem Revision 2 Preface About this Manual This manual describes the installation and operation for the Comtech EF Data SLM-5650 Satellite Modem. This is a technical document intended for earth station engineers, technicians, and operators responsible for the operation and maintenance of the SLM-5650. Related Documents The following documents are referenced in this manual: •...
  • Page 16 SLM-5650 Satellite Modem Revision 2 Preface Conventions and References Cautions and Warnings 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. CAUTION WARNING indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury.
  • Page 17 SLM-5650 Satellite Modem Revision 2 Preface Metric Conversion Metric conversion information is located on the inside back cover of this manual. This information is provided to assist the operator in cross-referencing English to Metric conversions. Recommended Standard Designations Recommended Standard (RS) Designations are equivalent to the designation of the Electronic Industries Association (EIA).
  • Page 18 SLM-5650 Satellite Modem Revision 2 Preface European EMC Directive In order to meet the European Electro-Magnetic Compatibility (EMC) Directive (EN55022, EN50082-1), properly shielded cables for DATA I/O are required. More specifically, these cables must be shielded from end-to-end, ensuring a continuous ground shield. The following information is applicable for the European Low Voltage Directive (EN60950): <HAR>...

  • Page 19: Limitations Of Warranty

    SLM-5650 Satellite Modem Revision 2 Preface Warranty Policy This Comtech EF Data product is warranted against defects in material and workmanship for a period of one year 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 20 SLM-5650 Satellite Modem Revision 2 Preface Notes: ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________...

  • Page 21: Chapter 1. Introduction

    Chapter 1. Introduction This chapter describes an overview of the SLM-5650 Satellite Modem, referred to in this manual as “the modem” (Figure 1-1). Figure 1-1. SLM-5650 Introduction The SLM-5650 satisfies the requirements for applications that require state-of-the-art modulation and coding techniques to optimize satellite transponder bandwidth usage while retaining backward compatibility in government and military communications systems.

  • Page 22: Features

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM 1.1.1 Features The modem incorporates the following: • MIL-STD-188-165A compliant (Types A, B, D, E, F) • Intel-Sat IESS-308, -309, -310, and -315 • 64 kbps to 52 Mbps (Modulation, code rate, and interface dependent) •...

  • Page 23: Options

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM 1.1.2 Options How Enabled Option FAST Variable data rates from 64 kbps to 5, 10, 20, or 52 Mbps FAST 8-PSK and 16-QAM FAST Turbo Data Rates to 5, 10, 20, and 52 Mbps FAST Automatic Uplink Power Control (AUPC) Hardware...

  • Page 24: Figure 1-2. Slm-5650 Block Diagram

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM 70/140 Power Control Tx FEC Tx/Synth Modulator Reed-Solomon Data Interface 64 kbps to 20 Mbps Viterbi EIA-530 Bypass Tx 70/140 MHz Nyquist Filtering Bypass Constellation Tx L-Band Mapping Data Interface Optional FEC Slot 64 kbps to 52 Mbps Tx/Rx L-Band...

  • Page 25: Operating Modes

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM Operating Modes The modem supports Closed Network, Open Network and OM-73 modes of operation described as follows. 1.4.1 Closed Networks Closed networks refer to private networks with modem operational parameters that do not need to interoperate with modems developed for commercial open networks, as specified under the IESS- 308, IESS-309, and IESS-310.

  • Page 26: Tia/Eia-530

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM 1.5.1 TIA/EIA-530 The TIA/EIA-530 interface supports the physical layer requirements for TIA/EIA-530. It also supports the TIA/EIA-422 electrical interface specification. This interface operates in duplex from 64 kbps to 20 Mbps. 1.5.2 TIA/EIA-613 (HSSI) The TIA/EIA-613 interface supports the physical layer requirements for TIA/EIA-613.

  • Page 27: Interoperability

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM Interoperability 1.7.1 Interoperability with Legacy Modems The modem is fully compatible and interoperable with all specified modes of operation of the following legacy modems: a. OM-73 (V) b. MD-1352 (P)/U (BEM-7650) c. MD-1340 (OM-73 interoperable mode only; orderwire not required) d.

  • Page 28: Summary Of Specifications

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM Summary of Specifications Table 1-1. Summary of Specification Parameter Specification Operating Frequency Range 52 to 88, 104 to 176, 950 to 2000 MHz, in 100 Hz steps Modulation Types BPSK, QPSK, OQPSK, 8-PSK, 16-QAM Digital Data Rates 64 kbps to 5 Mbps, in 1 bps steps (EIA-530, EIA-613) 64 kbps to 10 Mbps, in 1 bps steps (EIA-530, EIA-613)
  • Page 29 SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM Table 1-1. System Specification (Continued) Demodulator Specification Input Power: Desired Carrier +10 to –55 dBm Maximum Composite +20 dBm or +40 dBc 50 Ω Input Impedance Input Connectors TNC for 52 to 88, 104 to 176 Type N for 950 to 2000 MHz ±...

  • Page 30: Performance

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM 1.8.1 Performance 1.8.2 Acquisition and Timing Performance Requirements Note: The following reference Eb/No is defined as the required Eb/No corresponding to a BER of IE-3 with R-S FEC not enabled. Table 1-2. Acquisition and Timing Performance Requirements Parameter Specification The modem achieves initial acquisition within the times as specified within ±...

  • Page 31: Data Quality Performance

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM Table 1-3. Doppler Requirements Parameter C-Band X-Band Ku-Band Ka-Band Doppler Shift in Hz ± 2475 ± 3535 ± 6045 ± 11,810 Doppler Rate of Change in Hz/sec ± 226 ± 270 ± 490 ±...

  • Page 32: Iess-308 Compatible Mode Performance

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM 1.8.3.3 IESS-308 Compatible Mode Performance When operating in the IESS-308 Compatible Mode, SLM-5650 BER vs. E performance is as specified in IESS-308. 1.8.3.4 IESS-309 Compatible Mode Performance When operating in the IESS-309 Compatible Mode, SLM-5650 BER vs. E performance is as specified in IESS-309.

  • Page 33: Ber

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM 1.8.3.8 1.8.3.8.1 BPSK/QPSK/Offset QPSK BER Performance, Viterbi Decoding Table 1-4 applies to BPSK, QPSK, and OQPSK rates. Table 1-4. Viterbi Decoder BER Eb/No (dB) Specification Viterbi Decoder 1/2 Rate 3/4 Rate 7/8 Rate Uncoded 10.8 11.6...

  • Page 34: 8-Psk Ber Performance, Trellis Decoder

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM 1.8.3.8.3 8-PSK BER Performance, Trellis Decoder Table 1-6 applies to 8-PSK with trellis decoder rates. Table 1-6. 8-PSK BER Performance, Trellis Decoder Eb/No (dB) Specifications Viterbi Decoder 2/3 Rate 5/6 Rate 10.1 10.8 11.6 10.2 12.3...

  • Page 35: Ber Performance, Turbo Products Code Decoding

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM 1.8.3.8.6 BER Performance, Turbo Products Code Decoding Table 1-9 applies to Turbo Products Code (TPC) decoding rates. Table 1-9. BER Performance, TPC Decoding Eb/No (dB) Specification BPSK QPSK/OQPSK 21/44 5/16 21/44 17/18 Eb/No Specification 8-PSK 16-QAM 17/18...

  • Page 36: Ber Performance With Symmetrical Adjacent Carriers

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM 1.8.4 BER Performance with Symmetrical Adjacent Carriers Operating in the presence of two adjacent symmetrical carriers (one lower in frequency and one higher in frequency with same modulation, data rate, and coding), the modem performance is not degraded more than as indicated in Table 1-10, Column three, and a and b.

  • Page 37: Ber Performance With Asymmetrical Adjacent Carriers

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM 1.8.5 BER Performance with Asymmetrical Adjacent Carriers Operating in the presence of two adjacent asymmetrical carriers, one lower in frequency and one higher in frequency, and each adjacent carrier symbol rate (R" ) = 2.0 R' , the modem performance is not degraded more than indicated in Table 1-10, Column four, and a and b.

  • Page 38: Dimensional Envelope

    SLM-5650 Satellite Modem Revision 2 Introduction MN/SLM5650.IOM Dimensional Envelope Figure 1-3. Dimensional Envelope 1–18...

  • Page 39: Chapter 2. Installation

    Chapter 2. INSTALLATION This chapter provides unpacking and installation instructions, system options, and a description of external connections and backward alarm information. The equipment contains parts and assemblies sensitive to damage by Electrostatic Discharge (ESD). Use ESD precautionary procedures when touching, removing, or inserting PCBs.

  • Page 40: Installation

    SLM-5650 Satellite Modem Revision 2 Installation MN/SLM5650.IOM Installation 2.2.1 Optional Installation of Side-Railings Install optional side-railings (FP/SL0006), as follows: Quantity Part Number Description FP/SL0006 Side-Railings Use standard shop tooling. Install the side-railings with customer-furnished standard shop hardware. Figure 2-1. Typical Installation of Side-Railings, FP/SL0006 2–2...

  • Page 41: Optional Installation Using A Typical Customer Rack

    SLM-5650 Satellite Modem Revision 2 Installation MN/SLM5650.IOM 2.2.2 Optional Installation Using a Typical Customer Rack Step Procedures Mount the modem chassis in the assigned position of the equipment rack. Support the modem by either a rack-mounted shelf, or the two rear rack- mounted brackets supplied with the unit.

  • Page 42: External Connections

    SLM-5650 Satellite Modem Revision 2 Installation MN/SLM5650.IOM External Connections The connectors on the rear panel of the SLM-5650 are shown in Figure 2-4 and described in the following paragraphs. Name Ref Des Connector Type Function EXT REF Modem Reference 70/140 MHz 70/140 MHz Type N L-Band...

  • Page 43: External Reference, (J1)

    SLM-5650 Satellite Modem Revision 2 Installation MN/SLM5650.IOM 2.3.1 External Reference, (J1) The external reference uses a standard 50 Ω, TNC female connector. TNC Connector Reference Description Direction EXT REF External Reference 1, 5, 10 MHZ Input 2.3.2 70 / 140 IF Interface Connectors The 70 / 140 IF use standard 50 Ω, TNC female connectors.

  • Page 44: Connector, (J6)

    SLM-5650 Satellite Modem Revision 2 Installation MN/SLM5650.IOM 2.3.5 EIA-530 Connector, (J6) The Data connector is a 25-pin ‘D’ type female (DB25-F). This connector conforms to the EIA- 530 pin-out for EIA-422 operation only. Pin # Name Ground SD_B SD_A ST_A RD_A RD_B RS_A...

  • Page 45: Hssi Connector, (J7)

    SLM-5650 Satellite Modem Revision 2 Installation MN/SLM5650.IOM 2.3.6 HSSI Connector, (J7) Notes: Pin # Name Ground 1. 52-pin connector Ground 2. These are non-HSSI defined signals. On Cisco routers there is no connection to those pins. Fault => Open No Fault => Ground Not Used Not Used Ground...

  • Page 46: Alarms Connector, (J8)

    SLM-5650 Satellite Modem Revision 2 Installation MN/SLM5650.IOM 2.3.7 Alarms Connector, (J8) The alarm connector provides Form C contact closures for alarm reporting. The three Form C summary fault contacts are Modulator, Demodulator Common Equipment. The alarm connection is a 9-pin female D connector (J8) located on the rear panel of the modem. Screw locks are provided for mechanical security on the mating connector.

  • Page 47: Remote Connector, (J10)

    SLM-5650 Satellite Modem Revision 2 Installation MN/SLM5650.IOM (15-Pin Connector) The auxiliary connection is a 15-pin female D connector (J9) located on the rear panel of the modem. Screw locks are provided for mechanical security on the mating connector. Pin # Signal Function Name Chassis Ground...

  • Page 48: Overhead Data, (P1)

    SLM-5650 Satellite Modem Revision 2 Installation MN/SLM5650.IOM 2.3.10 Overhead Data, (P1) The overhead interface connector is a 25-pin male D interface located on the rear panel of the modem. This connector pin-out allows for connection of EIA-422, EIA-485 and EIA-232 data interfaces for use with overhead framing.

  • Page 49: Ac Power Connector

    SLM-5650 Satellite Modem Revision 2 Installation MN/SLM5650.IOM AC Power Connector A standard, detachable, non-locking, 3-prong power cord (IEC plug) supplies the Alternating Current (AC) power to the modem. Observe the following: Input Power 65W maximum, 50W typical Input Voltage 90 to 132 or 175 to 264 VAC Unit switches ranges automatically Connector I.E.C...
  • Page 50 SLM-5650 Satellite Modem Revision 2 Installation MN/SLM5650.IOM This page is intentionally left blank. 2–12...

  • Page 51: Table 3-1. Om-73 Mode

    Chapter 3. Configuration Modes The following tables show the various data rate ranges available for various modes. Table 3-1. OM-73 Mode Data Rate Symbol Rate (ksps) (kbps) Modulation Type BPSK 1/1 8472 10000 BPSK 1/2 15000 30000 BPSK 3/4 22500 85.333 29999.999 BPSK 7/8...

  • Page 52: Table 3-2. Mil-Std-188-165A Mode

    SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM Table 3-2. MIL-STD-188-165A Mode Modulation R-S Code R-S Depth Data Rate Symbol Rate (ksps) Type Word (kbps) BPSK 1/1 8472 10000 BPSK 1/2 15000 30000 BPSK 3/4 22500 85.333 29999.999 BPSK 7/8 26250 73.142 30000 QPSK 1/1...

  • Page 53: Table 3-3. Iess-308 Mode - Standard Higher Rates

    SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM Modulation R-S Code R-S Depth Data Rate Symbol Rate (ksps) Type Word (kbps) OQPSK 7/8 126,112 4, 8 46666.666 41.143 30000 OQPSK 7/8 219,201 4, 8 48184.931 39.846 29999.999 OQPSK 7/8 225,205 4, 8 47833.333 40.139 29999.999...
  • Page 54 SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM Modulation Overhead R-S Code R-S Depth Data Rate Symbol Rate Type Word (kbps) (ksps) QPSK 3/4 IESS-308 194,178 4, 8, 16 2048 1584.06 QPSK 3/4 IESS-308 194,178 4, 8, 16 6312 4682.247 QPSK 3/4 IESS-308 194,178 4, 8, 16...
  • Page 55 SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM Modulation Overhead R-S Code R-S Depth Data Rate Symbol Rate Type Word (kbps) (ksps) QPSK 7/8 IESS-308 225,205 4, 8, 16 6312 4054.743 QPSK 7/8 IESS-308 225,205 4, 8, 16 8448 5394.397 QPSK 7/8 IESS-308 225,205 4, 8, 16...

  • Page 56: Table 3-4. Iess-308 Mode - Extended

    SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM Table 3-4. IESS-308 Mode - Extended Modulation Overhead R-S Code R-S Depth Data Rate Symbol Rate (ksps) Type Word (kbps) QPSK 1/2 None 30000 30000 QPSK 1/2 None 126,112 4, 8, 16 26666.666 29999.999 QPSK 1/2 None...
  • Page 57 SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM Modulation Overhead R-S Code R-S Depth Data Rate Symbol Rate (ksps) Type Word (kbps) OQPSK 1/2 IESS-309 208,192 4, 8, 16 8448 74.311 9809.067 OQPSK 3/4 None 20000 42.666 30000 OQPSK 3/4 None 126,112 4, 8, 16 40000...

  • Page 58: Table 3-5. Iess-309 Mode - Extended (Closed Network)

    SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM Table 3-5. IESS-309 Mode – Extended (Closed Network) Modulation Overhead R-S Code R-S Depth Data Rate Symbol Rate (ksps) Type Word (kbps) BPSK 1/2 None 15000 30000 BPSK 1/2 None 219,201 4, 8, 16 13767.123 139.462 29999.999...

  • Page 59: Table 3-6. Iess-310 Mode - Extended Rates

    SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM Table 3-6. IESS-310 Mode – Extended Rates Modulation Type Overhead R-S Code Word R-S Depth Data Rate Symbol Rate (kbps) (ksps) 8-PSK 2/3 None 219,201 4, 8, 16 139.463 8-PSK 2/3 None 219,201 4, 8, 16 51840 28241.194...

  • Page 60: Table 3-8. 16-Qam Mode

    SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM Table 3-8. 16-QAM Mode Modulation R-S Code R-S Depth Data Rate ( kbps) Symbol Rate ( ksps) Type Word 16-QAM 3/4 None None 51840 85.333 17280 16-QAM 3/4 219,201 4, 8, 16 51840 92.975 18827.462 16-QAM 3/4...

  • Page 61: Clocking Options

    SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM Clocking Options Clocking of the data from the terrestrial equipment to the satellite (and vice versa) will depend on the application. This section describes the most common options and recommended configurations. SCT (INTERNAL) clock no longer applies when the modem has loop timing on. The TX clock source is now recovered from the RX satellite data.

  • Page 62: Figure 3-1. Idr/Ibs G.703 Master/Master Clocking Diagram

    SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM TXCLOCK + TX TERRESTRIAL DATA CLOCK RECOVERY CLOCK HIGH STABILITY OSCILLATOR TERRESTRIAL INTERNAL OSCILLATOR TRANSMIT RECEIVE SATELLITE DATA CLOCK DATA BUFFER RECOVERY CLOCK CLOCK BUFFER CLOCK = TX TERRESTRIAL MASTER BUFFER CLOCK = TX TERRESTRIAL CLOCK BUFFER RECOVERY...

  • Page 63: Figure 3-2. Idr/Ibs G.703 Master/Slave Clocking Diagram

    SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM TXCLOCK + TX TERRESTRIAL DATA CLOCK RECOVERY CLOCK HIGH STABILITY OSCILLATOR TERRESTRIAL INTERNAL OSCILLATOR TRANSMIT RECEIVE TERRESTRIAL SATELLITE DATA CLOCK DATA BUFFER RECOVERY CLOCK CLOCK BUFFER CLOCK = TX TERRESTRIAL MASTER BUFFER CLOCK = RX (SATELLITE CLOCK) CLOCK BUFFER RECOVERY...

  • Page 64: Buffering

    SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM Buffering The purpose of a receive buffer is two reasons: • Plesiochronous buffering of two dissimilar clock frequencies (normally the far end transmit clock verses the local network clock). The clocks may be very close in frequency to each other and will normally slip at a constant rate.

  • Page 65: Figure 3-3. Clock Slip

    SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM PLESIOCHRONOUS OPERATION IS NOT EXACTLY EQUAL TO f 1) INCOMING TRAFFIC TOO FAST 2) INCOMING TRAFFIC TOO SLOW BIT 1 BIT 1 BIT 1 BIT 1 ERROR ERROR BIT 2 BIT 2 BIT 2 BIT 2 BIT 3 BIT 3...

  • Page 66: Figure 3-4. Doppler Shift

    SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM SATELLITE MOTION AND ORBITAL INCLINATION A SATELLITE IS MAINTAINED AT AN ASSIGNED GEOSTATIONARY GEO-SYNCHRONOUS LOCATION THROUGH THE USE OF INCLINED ORBIT GROUND COMMAND ADJUSTMENTS TO ITS N/S AND E/W LOCATION. THIS SATELLITE PROCESS, KNOWN AS SATELLITE NOMINAL STATION-KEEPING, IS USED TO KEEP GEO-SYNCHRONOUS...

  • Page 67: Doppler

    SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM 3.3.1 Buffer Size The depth of the receive buffer will depend on four parameters: • Doppler shift caused by satellite • Stability of each clock (plesiochronous/Doppler operation) • Frame/Multiframe length of multiplexed data format •...

  • Page 68: Plesiochronous

    SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM Plesiochronous The stability of station reference clocks is normally 1 x 10 (derived from a cesium standard). While the stability is exceptionally high, the two clocks are not in synchronization with each other and will eventually pass by each other.

  • Page 69: Frame/Multiframe Length

    SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM Frame/Multiframe Length The depth of the receive buffer required is applicable to all unframed data. When the data is framed (such as 2048 kbps G732 or 1544 kbps G733), it is desirable to provide slips in predefined locations.
  • Page 70 SLM-5650 Satellite Modem Revision 2 Configuration MN/SLM5650.IOM Notes: ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________...

  • Page 71: Chapter 4. Front Panel Operation

    Chapter 4. FRONT PANEL OPERATION This chapter describes the front panel operation of the modem, including the menus and their explanations, and clocking information. For information about remote control operation, refer to Appendix B. Front Panel The modem front panel (Figure 4-1) enables the user to control modem configuration parameters and display the modem status.

  • Page 72: Led Indicators

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM The front panel features include: • 40-character, 2-line LCD display • 6-button keypad for local control • 12-button array for manual data entry • 8 LEDs to provide overall status at a glance •...
  • Page 73 SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM The indicators are defined as follows: Color Condition Status Green No Unit Faults or Stored Faults Unit Status A Unit Fault exists Blinking There are Stored Faults. Green No Tx Traffic Faults or Alarms exists Orange A Tx Traffic Alarm exists Tx Status...

  • Page 74: Front Panel Keypad

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM 4.1.2 Front Panel Keypad The front panel keypad controls the local operation of the modem. The keypad consists of 18 keys. Each key provides one or more logical functions. This key is used to select a displayed function, or to execute a modem [ENTER] configuration change.

  • Page 75: Menu Matrix

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM 4.1.3 Menu Matrix Select: Configuration 4.3.1) Transmit (4.3.1.1) Mod, DataRate, Overhead, Frequency Power, Clocking,Misc Receive (4.3.1.2 Demod, DataRate, Overhead, Frequency, Acquisition, Buffer,Misc (4.3.1.3) Mode, FreqBand, Interface AUPC (4.3.1.4) Local, Enable, Power Settings Target Settings, Carrier Loss Action (4.3.1.5) Internal, Ext-1 MHz, Ext-5 MHz,...

  • Page 76: Opening Screen

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM Opening Screen This screen is displayed when power switch is in the On position: Comtech SLM-5650 Modem Status: Firmware Version x.x.x Mode: TURBO The bottom line displays the internal software version and the selected mode of operation. Press [ENT] to go to the Main Menu screen.

  • Page 77: Select: Config

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM 4.3.1 Select: Config CONFIG: Transmit Receive Mode AUPC Mask Reset Remote ( The following choices are presented: Permits the user to configure the Tx parameters. Transmit Receive Permits the user to configure the Rx parameters. Mode Permits the user to configure the modem operating modes.

  • Page 78: Select: Config: Transmit

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM 4.3.1.1 Select: CONFIG: Transmit Tx: Mod DataRate Overhead Frequency Power Clocking Misc Permits the user to select: FEC, Type, Rate, RS, Diff, and Scrambler. Permits the user to enter a selected data rate and view the symbol rate. DataRate (See Chapter 3.) Overhead...
  • Page 79 SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM When changing Modulation type the data rate must be set to a rate supported by the modulation type or the change to the modulation type will not be allowed. Some choices will only be visible if the modem is IMPORTANT set to a compatible mode or if an option is installed or enabled.
  • Page 80 SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM Select: CONFIG: Transmit: Frequency Tx Frequency: 1955.0000 MHz Spectrum: Normal Edit the Tx Frequency, using either step 1 or 2: 1. Key in the desired frequency using the numbered keypad. 2. Select the digit to be edited, using the arrow keys.

  • Page 81: Select: Config: Receive

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM Select: CONFIG: Transmit: Clocking Tx Clocking: CLK Source: SCT SCT Ref: Reference Select Clk Source or SCT Ref, then press [E]. Clk Source SCT or Tx-Terr SCT stands for Send Clock Timing or also is referred to as internal and is provided as an output to provide a clock reference for the user.
  • Page 82 SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM Note: Framing is applicable only when using externally framed data, with the following formats: T1 or E1 G.704 T2 G.743, G.704, G.707 E2 G.742, G.704, G.745 Select: CONFIG: Receive: Demod Demod: FEC:VIT Type:BPSK Rate:3/4 RS:N/A...
  • Page 83 SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM Select: CONFIG: Receive: DataRate Rx Data Rate: 020000.000 kbps Sym Rate: 0266666.666 ksps ( The user can enter the desired data rate using step 1 or step 2 as follows: 1. Use the number keypad and enter the desired data rate (see Chapter 3). 2.
  • Page 84 SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM Select: CONFIG: Receive: Frequency Rx Frequency: 1955.0000 MHz Spectrum: Normal Edit the Rx Frequency, using either step 1 or 2: 1. Key in the desired frequency using the numbered keypad. 2. Select the digit to be edited, using the arrow keys.

  • Page 85: Select: Config: Mode

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM Select: CONFIG: Receive: Buffer Buffer: Src:RX-Sat Center: Y/N Size:00001024 Mode:Bits Framing ( Rx-Sat, Int, or Tx-Terr. Rx-Sat is the recovered clock from the received carrier. Int is a clock synthesized from the modems reference (internal or external).
  • Page 86 SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM Mode: Modem:TURBO FreqBand:L-Band Interface:EIA-530 Select Modem Type, FreqBand or Interface, then press [E]. Modem: OM-73 This selects Linkabit OM-73 modem compatibility mode. MIL-165A This selects functionality defined by MIL-STD-188-165A. This selects functionality defined by IESS-308, the Intelsat Intermediate IESS-308 Data Rate standard.

  • Page 87: Select: Configuration: Aupc: Local

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM 4.3.1.4 Select: Configuration: AUPC: Local Local AUPC: Enable: Off Power Settings Target Setting Carrier Loss Action ( Select either Enable, Power Settings, Target Settings, or Power Loss Action, then press (E). Enable On or Off: Allows the user to enable AUPC on the local modem.

  • Page 88: Select: Config: Ref

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM 4.3.1.5 Select: CONFIG: Ref Reference: Internal Ext-1Mhz Ext-5Mhz Ext-10Mhz Select Internal, Ext-1Mhz, Ext-5Mhz or Ext-1Mhz, then press [E]. Internal Permits the user to select : Internal high stability ovenized 10 MHz oscillator Ext-1MHz Permits the user to select: An external 1 MHz reference, (accepts sine wave or square wave and...

  • Page 89: Select: Config: Reset

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM 4.3.1.7 Select: CONFIG: Reset Are you sure that you want to default the modem configuration? When selecting RESET all parameters in the modem get reset to the default settings. This includes the real time clock and the stored configurations.
  • Page 90 SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM Select: CONFIG: Remote: Remote: Serial: Interface If Interface was selected: M&C Bus Interface: RS232 RS485-2W RS485-4W TTL (Switching) Select RS232, RS485-2W (2-wire), or RS485-4W (4-wire), or TTL (Switching) using the arrow keys, then press [E]. The TTL (Switch) selection enables interoperation with the CRS-311 (1:1) or CRS-300 (1:N) switch.

  • Page 91: Select: Monitor

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM Select: CONFIG: Remote: Remote: Ethernet If Ethernet was selected: Ethernet Config: IP Address/Range Gateway SNMP GigaBit I/F Addr Permits the user to select the IP address . IP Address/Range Displays the modem’s MAC address, this is programmed at the factory and is not user changeable.

  • Page 92: Select: Monitor: Alarms

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM 4.3.2.1 Select: Monitor: Alarms Permits the user to view transmit alarms. Modulator symbol clock Phase Lock Loop status. Mod #1 Modulator RF Synthesizer Phase Lock Loop status. Mod #2 Mod #3 Modulator IQ activity status.
  • Page 93 SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM Select: Monitor: Alarms: Transmit: Mod 1 Position If Mod 1 character was selected. Mod: +--- Mod symbol clk Intf: ---- not locked. Select: Monitor: Alarms: Transmit: Intf 1 Position If Intf 1 character was selected.

  • Page 94: Select: Monitor: Event-Log

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM 4.3.2.2 Select: Monitor: Event-Log Stored Events: View Clear-All View Permits the user to view the stored faults. The modem will store up to 255 fault events. Clear-All Permits the user to clear all stored faults. To view the details of a stored fault select an event number by pressing enter.

  • Page 95: Select: Monitor: Rx-Params

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM 4.3.2.3 Select: Monitor: Rx-Params Fc=+05917 RSL<-60.0 dBm BERT=N/A Buf=000% Eb/No=Loss BER <1.0E-12 ( Permits the user to view the received carrier frequency offset in Hz. The range is the same as the acquisition range of the modem, 60 kHz. Permits the user to view the signal level of the received carrier in dBm.

  • Page 96: Select: Monitor: Gigabit I/F Statistics

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM 4.3.2.5 Select: Monitor: GigaBit I/F Statistics GigaBit Ethernet Card Statistics: View Clear-All View Permits the user to view the link statiscal counters. Permits the user to clear or reset the FPGA link error counter. Clear-All This menu will not appear unless a GigaBit Ethernet Interface is plugged into the modem.
  • Page 97 SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM 4.3.3.1 Select: Test: BERT BERT: Tx:Off Pattern:2047 ErrIns Reset Rx:Off Errs:=0000000 BER:NoSync Permits the user to turn the transmit test pattern generator On or Off. Permits the user to select a number of test data patterns. Pattern Mark Means, all one’s.

  • Page 98: Select: Save/Load

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM 4.3.3 Select: Save/Load Save/Load: Loc:0 Action: View Empty Permits the user to select the location to either save or load a configuration. There are 10 locations available, 0 – 9. Permits the user to select either Save or load the selected location. View is the Action default setting that allows the user to select the location before loading or saving.

  • Page 99: Select: Utility: Firmware

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM Select: Utility: RT-Clk Edit Real-Time Clock: 15:34:25 27/09/05 Select: Utility: RefAdjust Internal 10 MHz Ref Freq Fine Adjust: 3F3 Select: Utility: AGC AgcMan: Min Value: 00.0 Volts Max Value: 10.0 Volts ( Min Value Permits the user to specify the voltage to output on the External AGC voltage signal when the demodulator RSL is...
  • Page 100 SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM Select: Utility: Firmware: Information: Bootrom Bootrom: 05/13/05 FW11186-1- 1.1.1 Select: Utility: Firmware: Information: Image#1 Image#1: Bulk App M&C Mod Demod Decoder Filters TxIntfc RxIntfc Turbo Image# The following information is displayed: the firmware number including the revision, the release date and the version number.

  • Page 101: Select: Utility: Fast

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM 4.3.4.2 Select: Utility: FAST FAST: Configuration S/N 000000012 View Options Select: Utility: FAST: Configuration FAST Configuration: Enter Modem Code Enter TURBO Code Demo Mode Modem Code This is a 20 digit code, that allows upgrading the modem functionality, which can be purchased from Comtech EF Data .

  • Page 102: Display Screen Saver Status

    SLM-5650 Satellite Modem Revision 2 Front Panel Operation MN/SLM5650.IOM Options 8,9,10 and 11 should be standard with the base modem and do not need to occupy a FAST option slot. IMPORTANT 4.3.4.3 Display Screen Saver Status Modem The screen saver has two functions, one is to keep a fixed image from “burning”...

  • Page 103: System Checkout

    Chapter 5. MAINTENANCE This chapter contains system checkout, fault isolation, and identification information. System Checkout This section provides instructions for checking the modem setup within the earth station. Due to the complexity of the modem circuitry, the checkout procedure should be used only as a basic guideline.

  • Page 104: Interface Checkout

    SLM-5650 Satellite Modem Revision 1 Maintenance MN/SLM5650.IOM 5.1.1 Checkout 5.1.2 Interface Checkout Use the following procedure and the test setup in Figure 5-1 to verify the data interface. NOISE TX IF GENERATOR MODEM UNDER TEST VAR ATTEN RX IF BERT DATA CONNECTORS ATTEN...

  • Page 105: Modulator Checkout

    SLM-5650 Satellite Modem Revision 1 Maintenance MN/SLM5650.IOM 5.1.3 Modulator Checkout Use the following procedure to check out the modulator: Step Procedure Set up the equipment as shown in Figure 5-1 using 70/140 MHz IF interface. Refer to Chapter 1 for the modulator specifications. Set up the modem for IF loopback operation by using the Test\Loopback\IF from the front panel menu, or use an external IF loop.
  • Page 106 SLM-5650 Satellite Modem Revision 1 Maintenance MN/SLM5650.IOM Table 5-1. Conversion to S/N and E Chart (dB) Code Rate 1/2 Code Rate 3/4 Code Rate 7/8 (S+N)/N -0.6 10.0 10.5 10.1 10.1 10.1 10.1 11.0 10.6 10.6 10.6 10.6 11.5 11.2 11.2 11.2 11.2...
  • Page 107 SLM-5650 Satellite Modem Revision 1 Maintenance MN/SLM5650.IOM RL -49.00 dBm ATTEN 10 dB 2.00 dB/DIV RES BANDWIDTH 10.0 kHz Modem Rate = 2144 kbit/s, 3/4 Rate Coding with 7.7 dB Eb/No (S + N)/N = 10 dB SPAN 1.000 MHz CENTER 70.000 MHz ST 30.00 sec *RB 10.0 kHz...

  • Page 108: Demodulator Checkout

    SLM-5650 Satellite Modem Revision 1 Maintenance MN/SLM5650.IOM Demodulator Checkout Test the demodulator as follows: Step Procedures Set up the equipment as shown in Figure 5-1 using the 70/140 MHz IF interface. Set up the modem with an external IF loop and level. Use a properly operating modulator, and ensure that power levels, data rates, code rates, etc.
  • Page 109 SLM-5650 Satellite Modem Revision 1 Maintenance MN/SLM5650.IOM PC version IQ monitor with noise Oscilloscope WITH NOISE Figure 5-4. Typical Constellation Patterns with Noise and without Noise 5–7...
  • Page 110 SLM-5650 Satellite Modem Revision 1 Maintenance MN/SLM5650.IOM PC version IQ monitor WITHOUT NOISE Oscilloscope WITHOUT NOISE Figure 5-4. Typical Constellation Patterns with Noise and without Noise (Cont) 5–8...

  • Page 111: Fault Isolation

    SLM-5650 Satellite Modem Revision 1 Maintenance MN/SLM5650.IOM Fault Isolation The design of the modem allows for removal and replacement of some faulty components in the field. The optional interface PCB’s can be removed from the modem through the rear panel, without requiring special tools. The TURBO PCB and power supply can be replaced if the top cover is removed.
  • Page 112 SLM-5650 Satellite Modem Revision 1 Maintenance MN/SLM5650.IOM System faults are reported in the “Monitor/Alarms” menu, and stored faults are reported in the “Monitor/Event-Log” menu. To determine the appropriate action for repairing the modem, refer to Table 5-2 and the list of possible problems. 5–10...
  • Page 113 SLM-5650 Satellite Modem Revision 1 Maintenance MN/SLM5650.IOM Table 5-2. SLM-5650 Fault Tree MODULATOR FAULTS NONE GREEN MOD SYMBOL CLOCK PLL MOD SYNTHESIZER PLL MOD I/Q ACTIVITY MOD FILTER CLIPPING TX INTERFACE CLOCK PLL TX INTF CLOCK ACTIVITY YELLOW TX INTERFACE SCT PLL TX INTERFACE DATA AIS YELLOW DEMODULATOR FAULTS...
  • Page 114 SLM-5650 Satellite Modem Revision 1 Maintenance MN/SLM5650.IOM Table 5-2. SLM-5650 Fault Tree (Continued) UNIT FAULTS NONE GREEN +5.0V POWER +3.3V POWER +2.5V POWER +1.5V POWER +12V POWER -12V POWER +18V POWER COOLING FAN EXTERNAL REF ACTIVITY YELLOW 192 MHZ CLOCK PLL 10 MHZ REF PLL M&C FPGA CONFIG MOD FPGA CONFIG...
  • Page 115 SLM-5650 Satellite Modem Revision 1 Maintenance MN/SLM5650.IOM 5.4.1 LED Display and Description The 8 LED’s indicate fault, status, and alarm information located on the modem’s front panel. COLOR STATUS LED’s A RED COLOR indicates a fault currently exists. It is stored in the Event Log memory.
  • Page 116 SLM-5650 Satellite Modem Revision 1 Maintenance MN/SLM5650.IOM Notes: _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________...
  • Page 117 Appendix A. OPTIONS Forward Error Correction Options As standard, the SLM-5650 Modem is equipped with three Forward Error Correction encoders/decoders – Viterbi, concatenated Reed-Solomon, and Trellis (which is available with the 8-PSK FAST option). The constraint lengths and encoding polynomials are not only Open Network compatible, but are also Closed Network compatible with the vast majority of existing modems from other manufacturers.

  • Page 118: Table A-1. Viterbi Decoding Summary

    SLM-5650 Satellite Modem Revision 1 Options MN/SLM5650.IOM Viterbi The combination of convolutional coding and Viterbi decoding has become an almost universal standard for satellite communications. The SLM-5650 complies with the Intelsat IESS 308 and 309 standards for Viterbi decoding with a constraint length of seven. This is a de facto standard, which means inter-operability with other manufacturer’s equipment.
  • Page 119 SLM-5650 Satellite Modem Revision 1 Options MN/SLM5650.IOM Reed-Solomon Outer Codec The concatenation of an outer Reed-Solomon (R-S) Codec with a Viterbi decoder first became popular in the early 1990's. It permits significant improvements in error performance without significant bandwidth expansion. The coding overhead added by the R-S outer Codec is typically around 10%, which translates to a 0.4 dB power penalty for a given link.

  • Page 120: Table A-2. Open Network Modes

    SLM-5650 Satellite Modem Revision 1 Options MN/SLM5650.IOM Closed Network Modes A 225,205 code is used in closed network mode. For a rate of 225,205 data is put into blocks of 225 bytes, of which 205 bytes are data, and 20 bytes are FEC overhead. The code was chosen because it is compatible with legacy Comtech EF Data modems.

  • Page 121: Table A-3. Concatenated Rs Coding Summary

    SLM-5650 Satellite Modem Revision 1 Options MN/SLM5650.IOM Table A-3. Concatenated RS Coding Summary AGAINST Exceptionally good BER performance - Very pronounced threshold effect - does not fail several orders of magnitude gracefully in poor Eb/No conditions. Additional coding improvement in link BER under given overhead actually degrades sync threshold, and reduces link conditions.

  • Page 122: Table A-4. 8-Psk/Tcm Coding Summary

    SLM-5650 Satellite Modem Revision 1 Options MN/SLM5650.IOM Table A-4. 8-PSK/TCM Coding Summary AGAINST Exceptionally bandwidth efficient compared to Needs concatenated RS outer codec to give QPSK acceptable coding gain performance Interoperable with legacy Intelsat networks Demodulator acquisition threshold much higher than for QPSK 8-PSK is more sensitive to phase noise and group delay distortion than QPSK...
  • Page 123 Appendix B. REMOTE CONTROL Introduction This section describes the protocol and message command set for remote monitor and control of the SLM-5650 Modem. The electrical interface is either an EIA-485 multi-drop bus (for the control of many devices) or an EIA-232 connection (for the control of a single device), and data is transmitted in asynchronous serial form, using ASCII characters.
  • Page 124 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM but only one (the intended) will reply. The target enables its output line driver, and transmits its return data packet back to the controller, in the other direction, on the physically separate pair. EIA 485 (full duplex) summary: •...
  • Page 125 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Packet Structure Controller-to-target: Start of Packet Target Address Address Instruction Code Optional End of Packet De-limiter Code Qualifier Arguments < = or ? Carriage Return ASCII code 60 ASCII code 47 ASCII code 61 ASCII code 13 or 63 (1 character)
  • Page 126 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM The controller sends a packet with the address of a target - the destination of the packet. When the target responds, the address used is the same address, to indicate to the controller the source of the packet.
  • Page 127 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM From Target to Controller, the only permitted values are: Symbol Definition The ‘=’ code is used in two ways: (ASCII code 61) a. If the controller has sent a query code to a target (Example: TFQ? (meaning ‘what’s the Transmit frequency?’), the target would respond with TFQ=xxxx.xxxx, where xxxx.xxxx represents the frequency in question.
  • Page 128 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Remote Commands AET, B-34 IEP, B-28 MGC, B-36 RBM, B-19 SCT, B-12 AMN, B-34 IMG, B-24 MOM, B-7 RBO, B-18 SNO, B-24 AMT, B-34 IPA, B-20 MRC, B-19 RBS, B-19 SSI, B-29 AMX, B-33 ISP, B-29 MSK, B-29...
  • Page 129 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Modem MOM= 1 byte, value 0 Command or Query.
  • Page 130 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Tx Frequency TFQ= 9 bytes Command or Query.
  • Page 131 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Tx FEC Type TFT= 1 byte, value Command or Query.
  • Page 132 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Tx Data Rate TDR= 10 bytes Command or Query.
  • Page 133 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) TRD= 1 byte, value Command or Query.
  • Page 134 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Tx Differential TDE= 1 byte Command or Query.
  • Page 135 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Tx Clock TCI= 1 byte, value Command or Query.
  • Page 136 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Tx Carrier TXO= 1 byte, value Command or Query.
  • Page 137 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Rx Demod RMD= 1 byte, value Command or Query.
  • Page 138 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Rx Reed- RRS= 1 byte, value Command or Query.
  • Page 139 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Rx Spectrum RSI= 1 byte, value Command or Query.
  • Page 140 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Rx Clock RCI= 1 byte, value Command or Query.
  • Page 141 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) REA= 3 bytes Command or Query. REA= REA? REA=xxx...
  • Page 142 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) IP Address IPA= 18 bytes, Command or Query.
  • Page 143 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Rx BERT BRS= None Command only.
  • Page 144 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Configuration CST= 1 byte Command only.
  • Page 145 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Eb/No Alarm EBA= 4 bytes Command or Query.
  • Page 146 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Local/Remote LRS= 1 byte, value Command or Query.
  • Page 147 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Equipment ID 17 bytes Query only.
  • Page 148 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Live Unit 8 bytes Query only.
  • Page 149 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Live Tx Faults 8 bytes Query only.
  • Page 150 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Number of 3 bytes Query only.
  • Page 151 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Modem Alarm MSK= 6 bytes Command or Query.
  • Page 152 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Retrieve next 105 bytes Query only.
  • Page 153 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM G.703 Interface Card Remote Control Commands. The following commands are only valid when the G.703 option card is installed in the SLM-5650 modem. Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query...
  • Page 154 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Receive T2 T2F= 1 byte, value Command or Query.
  • Page 155 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Automatic Uplink Power Control (AUPC) Remote Control Commands. The following commands are only valid when the SLM-5650 modem type has been set to AUPC. Note: Always wait 3 seconds between consecutive remote modem command/query polls. If Local AUPC is not enabled, query commands will return the last known condition. A request for status from the remote modem will then be transmitted, ensuring that the next query will return current status.
  • Page 156 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) AUPC AMN= 5 bytes Command or Query.
  • Page 157 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Remote RPC= 1 byte, values Command or Query.
  • Page 158 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) Global MGC= 177 bytes, with Command or Query.
  • Page 159 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) A = Tx SCT Reference same as SCT B = Tx Clock Invert same as TCI...
  • Page 160 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command Code and Qualifier) to Query Qualifier) J = Receive T2 Framing same as T2F K = Receive E2 Framing same as E2F...
  • Page 161 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM Note: The following codes are used in the ‘Response to Command’ column: Message ok Received ok, but invalid arguments found Message ok, but not permitted in current mode Message ok, but unit is not in Remote mode B–39...
  • Page 162 SLM-5650 Satellite Modem Revision 1 Remote Control MN/SLM5650.IOM This page is intentionally left blank. B–40...
  • Page 163 Appendix C. FLASH UPGRADING The SLM-5650 eliminates the need for updating firmware by physically replacing EPROMs. Instead, the SLM-5650 modem uses ‘flash memory’ technology internally, and new firmware can be uploaded to the unit from an external PC, as follows: •...
  • Page 164 SLM-5650 Satellite Modem Revision 1 Reflash MN/SLM5650.IOM 2. Create a temporary directory (folder) on your PC. Windows: Select File > New > Folder > and rename the New Folder to "temp" or another convenient and unused name. Assuming "temp" works, you should now have a "c:\temp"...
  • Page 165 SLM-5650 Satellite Modem Revision 1 Reflash MN/SLM5650.IOM Verify the communication and connection by issuing a "ping" command to the modem. You can find the IP address of the modem either remotely using the <0/IPA? command or from the front panel with the <Config> <Remote> <Remote> <Ethernet>...
  • Page 166 SLM-5650 Satellite Modem Revision 1 Reflash MN/SLM5650.IOM 10. Verify the new software versions are booting by observing the following messages on the modem display: Comtech SLM-5650 Modem Firmware Version: 1.1.x C–4...
  • Page 167 Appendix D. ETHERNET MANAGEMENT Introduction The base modem is equipped with an RJ-45, 10/100BaseT Ethernet management interface used for monitor and control purposes. This chapter of the manual will provide a high-level overview of the functionality provided by this interface and references other chapters for further details. Ethernet Management Interface Protocols The modem 10/100BaseT Ethernet Management Interface supports three (3) different management protocols:...
  • Page 168 SLM-5650 Satellite Modem Revision 1 Ethernet Management MN/SLM5650.IOM Web Server (HTTP) Interface The embedded Web Server application provides the user with an easy to use interface to configure and monitor all aspects of the Base Modem. These web pages have been designed for optimal performance when using Microsoft’s Internet Explorer 5.5 or higher.
  • Page 169 SLM-5650 Satellite Modem Revision 1 Ethernet Management MN/SLM5650.IOM Web Server Menu Tree Table D-1. Web Server Menu Tree Level 2 Level 1 Home Home Contact Support Admin Access Remote Config Mdm Page 1 Page 2 AUPC Stats Modem Status Modem Logs ODU (CDM-570 only) Config Status...
  • Page 170 SLM-5650 Satellite Modem Revision 1 Ethernet Management MN/SLM5650.IOM SNMP Interface The Simple Network Management Protocol (SNMP) is an application-layer protocol designed to facilitate the exchange of management information between network devices. The SLM-5650 SNMP agent supports both SNMPv1 and v2c. For proper SNMP operation, the SLM-5650 MIB files must be used with the associated version of the SLM-5650 base modem M&C.
  • Page 171 SLM-5650 Satellite Modem Revision 1 Ethernet Management MN/SLM5650.IOM D.5.2 SNMP Community Strings The modem uses community strings as a password scheme that provides authentication before gaining access to the modem agent’s MIBs. In “SNMP v1/v2c”, the community string is sent unencrypted in the SNMP packets. Caution must be taken by the network administrator to ensure that SNMP packets travel only over a secure and private network if security is a concern.

  • Page 172: Telnet Interface

    SLM-5650 Satellite Modem Revision 1 Ethernet Management MN/SLM5650.IOM The following tables are the Alarms and Faults v1 traps / v2 notifications that the modem supports. Alarms and Faults SNMPv1 traps: slm5650TxTrafficAlarmV1 6247282 slm5650UnitAlarmV1 6247281 slm5650RedundancyStateV1 6247283 slm5650RedundancyStateV1 6247284 Alarms and Faults SNMPv2 notifications: slm5650UnitAlarmV2 1.3.6.1.4.1.6247.28.2.1.1.
  • Page 173 SLM-5650 Satellite Modem Revision 1 Ethernet Management MN/SLM5650.IOM The screen capture below shows the login process : COMTECH EF DATA SLM-5650 TELNET INTERFACE Once logged into the Telnet interface as the Administrator, the user can access the standard remote control interface defined in Chapter 13 as shown in the example below: COMTECH EF DATA SLM-5650 TELNET INTERFACE...
  • Page 174 SLM-5650 Satellite Modem Revision 1 Ethernet Management MN/SLM5650.IOM There is a disadvantage when using Windows DOS as Telnet Client. Since Windows DOS cannot translate a ‘\r’ to a ‘\r\n’ for the messages coming from Telnet Server, the multi-line command response (for example, FRW? response) will be displayed as one line, with the latter lines overwriting the previous lines.
  • Page 175 SLM-5650 Satellite Modem Revision 1 Ethernet Management MN/SLM5650.IOM COMTECH EF DATA SLM-5650 TELNET INTERFACE...
  • Page 176 SLM-5650 Satellite Modem Revision 1 Ethernet Management MN/SLM5650.IOM D-10...
  • Page 177 Appendix E. 10/100/1000 Base-T (GbE) Interface Introduction The 1000 Base-T Ethernet Interface or GbE acts as an Ethernet bridge for data traffic. The GbE Interface is shown in Figure E-1. Monitor and Control (M&C) information is not supported on the GbE Interface but is available through the 10/100 Base-T remote port of the modem. The GbE Interface is 10/100/1000 Base-T and supports data rates from 1 Mbps to 155 Mbps.

  • Page 178: Table E-1. Interface Specifications

    SLM-5650 Satellite Modem Revision 1 CDI-70 Gigabit Ethernet Interface MN/SLM5650.IOM Physical Description The GbE is implemented on a 4.5 W x 6.8 D x .85 H inches (11.43 W x 17.27 D x 2.16H cm) PCB. Connectivity to the SLM-5650 will be implemented with a 96-pin DIN receptacle, and the LAN interface consists of an RJ-45 connector with link status and link activity Light-Emitting Diode (LED) indicators (at minimum).
  • Page 179 SLM-5650 Satellite Modem Revision 1 CDI-70 Gigabit Ethernet Interface MN/SLM5650.IOM Monitor & Control Ingress Rx errors Ingress Frame Check Sequence Errors Egress oclets Egress unicast packets Egress broadcast packets Egress multicast packets WAN Port Statistics Ingress good oclets Ingress bad oclets Ingress unicast packets Ingress broadcast packets Ingress multicast packets...

  • Page 180: Table E-2. Connector Pinout

    SLM-5650 Satellite Modem Revision 1 CDI-70 Gigabit Ethernet Interface MN/SLM5650.IOM Management Management Packet Packet Processor Processor & Data Ethernet RJ-45 Layer 2 Packet RJ-45 Layer 2 Packet Modem Interface Switch Processor Switch Processor Interface μC Memory Memory Gigabit Ethernet Card Figure E-2.
  • Page 181 SLM-5650 Satellite Modem Revision 1 CDI-70 Gigabit Ethernet Interface MN/SLM5650.IOM 1000 Base-T Ethernet (GbE) Interface Card Removal and Installation Ensure the unit is in a Power Off mode. Serious injury or damage to the equipment could result. The card plugs in WARNING upside down.
  • Page 182 SLM-5650 Satellite Modem Revision 1 CDI-70 Gigabit Ethernet Interface MN/SLM5650.IOM This page is intentionally left blank.
  • Page 183 Index AC Power Connector, 2-11 Data Interfaces, 1-5 Acceptable ACI Degradation with Spacing Factor Data Quality Performance, 1-11 of 1.2, 1-16 Demodulator Checkout, 5-6 Acquisition and Timing Performance Dimensional Envelope, 1-18 Requirements, 1-10 Display Screen Saver Status, 4-32 Alarms Connector (J8), 2-8 Doppler, 3-17 Auxiliary Connector (J9), 2-8 Doppler Requirements, 1-11...
  • Page 184 SLM-5650 Satellite Modem Revision 2 Index MN/SLM5650 .IOM IDR/IBS G.703 Master/Master, 3-11 Performance, 1-10 IDR/IBS G.703 Master/Master Clocking Diagram, 3-12 Plesiochronous, 3-18 IDR/IBS G.703 Master/Slave, 3-11 Protection Switches, 1-7 IDR/IBS G.703 Master/Slave Clocking Diagram, 3-13 IESS-308 Compatible Mode Performance, 1-12 IESS-308 Mode - Extended, 3-6 IESS-308 Mode - Standard Higher Rates, 3-3 Rear Panel, 2-4...
  • Page 185 SLM-5650 Satellite Modem Revision 2 Index MN/SLM5650 .IOM 16-QAM Coding Mode Performance, 1-12 Numeric 70/140 IF Interface Connectors, 2-5 8-PSK/TCM Coding Summary, A-6 1000 Base_T Ethernet (GbE) Card, E-5 8-PSK BER Performance, Trellis Decoder, 10/100/1000 Base-T (GbE) Interface, E-1 1-14 16-QAM BER Performance Viterbi Decoder and 8-PSK BER Performance, Trellis Decoder and Reed-Solomon, 1-14...

  • Page 187: Metric Conversions

    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 0.01 — — 1 inch 2.540 — 0.08333 0.2778 1.578 x 10 0.254 — 25.4 1 foot 30.480 12.0 —...
  • Page 188 2114 85281 WEST TH STREET TEMPE ARIZONA 480 • 333 • 2200 PHONE 480 • 333 • 2161...

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