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Comtech EF Data CDM-840 Installation And Operation Manual

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CDM-840
Remote Router
Installation and Operation Manual
For Firmware Version 1.1.1 or higher
IMPORTANT NOTE: The information contained in this document supersedes all previously published
information regarding this product. Product specifications are subject to change without prior notice.
Part Number
MN-CDM840 Revision 0

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  • Page 1 CDM-840 Remote Router Installation and Operation Manual For Firmware Version 1.1.1 or higher IMPORTANT NOTE: The information contained in this document supersedes all previously published information regarding this product. Product specifications are subject to change without prior notice. Part Number...
  • Page 3 Errata A Comtech EF Data Documentation Update Subject: Revised Section 4.2 Ethernet FTP Upload Procedure Original Manual Part Number/Rev: MN-CDM840 Rev 0 Errata Number/ PLM Document ID: ER-CDM840.EA0 PLM CO Number: C14382 Comments: Replaces Step 9 on manual page 4-4.
  • Page 4 REVISE Sect. 4.2 Ethernet FTP Upload Procedure Step 9: PLM DOC ID ER-CDM840.EA0 THIS DOCUMENT IS NOT SUBJECT TO REVISION/UPDATE! PLM CO C14382 2 OF 2...
  • Page 5 For Firmware Version 1.1.1 or Higher Part Number MN-CDM840 Revision 0 October 18, 2010 Copyright © 2010 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 6 This page is intentionally blank.

  • Page 7: Table Of Contents

    Table of Contents TABLE OF CONTENTS ......................III  TABLES ............................. VII  FIGURES ........................... VII  PREFACE ........................... IX  About this Manual ............................. ix  Reporting Comments or Suggestions Concerning this Manual ............... ix  Conventions and References ........................ix  Metric Conversion ........................... ix  Recommended Standard Designations .....................
  • Page 8 CDM-840 Remote Router Revision 0 Table of Contents MN-CDM840 1.2  Functional Description ....................... 1–2  1.3  Features ............................1–4  1.3.1  Physical Description ......................... 1–4  1.3.1.1  Standard Hardware ......................1–4  1.3.1.2  Standard Assemblies ......................1–4  1.3.1.3  Optional Hardware ......................1–4  1.3.1.4  Optional Assemblies ......................1–4 ...
  • Page 9 CDM-840 Remote Router Revision 0 Table of Contents MN-CDM840 3.5.3  Chassis Ground Interface ......................3–5  CHAPTER 4.  FLASH UPGRADING ..................4–1  4.1  Flash Updating via Internet ....................... 4–1  4.2  Ethernet FTP Upload Procedure ....................4–2  CHAPTER 5.  ETHERNET MANAGEMENT ................5–1 ...
  • Page 10 6.2.2  BER, QEF, Eb/No, Es/No Spectral Efficiency, and Occupied Bandwidth ........6–2  6.3  VersaFEC (Short-block LDPC) ....................6–2  6.3.1  Range of Data Rates ......................... 6–4  6.4  CDM-840 Rx/Tx Error Performance Characteristics ............. 6–4  APPENDIX A.  FAST ACTIVATION PROCEDURE .............. A–1  A.1  Introduction ..........................A–1  A.2 ...
  • Page 11 Figure 3-1. CDM-840 – Rear Panel View ....................3–1 Figure 4-1. Flash Update via Internet ....................... 4–1 Figure 5-1. CDM-840 Remote Router Home (Splash) page ..............5–6 Figure 5-2. Home | Contact page ......................5–7 Figure 5-3. Admin | Access page ......................5–8 Figure 5-4.
  • Page 12 CDM-840 Remote Router Revision 0 Table of Contents MN-CDM840 Figure 6-6. VersaFEC Codec – BPSK, Rate 0.488 ................... 6–9 Figure 6-7. VersaFEC Codec – QPSK, Rate 0.533, 0.631, 0.706 and 0.803 .......... 6–10 Figure 6-8. VersaFEC Codec – 8-QAM, Rate 0.642, 0.711, and 0.780 ..........6–11 Figure 6-9.

  • Page 13: Preface

    PREFACE About this Manual This manual provides installation and operation information for the Comtech EF Data CDM-840 Remote Router. This is a technical document intended for earth station engineers, technicians, and operators responsible for the operation and maintenance of the CDM-840.

  • Page 14: Cautions And Warnings

    Multi-Hazard Formats Electrical Safety and Compliance The CDM-840 has been shown to comply with the EN 60950 Safety of Information Technology Equipment (Including Electrical Business Machines) safety standard. The equipment is rated for operation over the range 100V to 240V AC or, appropriately equipped, 36V to 60V DC.

  • Page 15: Low Voltage Directive (Lvd)

    The equipment is not designed for connection to power system that has no direct connection to ground. The CDM-840 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. Examples of acceptable ratings for the cable include HAR, BASEC and HOXXX-X.

  • Page 16: Telecommunications Terminal Equipment Directive

    Public Telecommunications Network. CE Mark Comtech EF Data declares that the CDM-840 meets the necessary requirements for the CE Mark. RoHS Compliance This unit satisfies (with exemptions) the requirements specified in the European Union Directive on the Restriction of Hazardous Substances, Directive 2002/95/EC, (EU RoHS).

  • Page 17: Warranty Policy

    The warranty does not apply to any part of a product that has been installed, altered, repaired, or misused in any way that, in the opinion of Comtech EF Data Corporation, would affect the reliability or detracts from the performance of any part of the product, or is damaged as the result of use in a way or with equipment that had not been previously approved by Comtech EF Data Corporation.

  • Page 18: Exclusive Remedies

    Preface MN-CDM840 A fixed charge established for each product will be imposed for all equipment returned for warranty repair where Comtech EF Data Corporation cannot identify the cause of the reported failure. Exclusive Remedies Comtech EF Data Corporation’s warranty, as stated is in lieu of all other warranties, expressed, implied, or statutory, including those of merchantability and fitness for a particular purpose.

  • Page 19: Customer Support

    Tempe, Arizona 85281 USA 480.333.2200 (Main Comtech EF Data number) 480.333.4357 (Customer Support Desk) 480.333.2161 FAX To return a Comtech EF Data product (in-warranty and out-of-warranty) for repair or replacement: • the Comtech EF Data Customer Support Department during normal business Contact hours.
  • Page 20 CDM-840 Remote Router Revision 0 Preface MN-CDM840 Notes:...

  • Page 21: Chapter 1. Introduction

    Overview Figure 1-1. CDM-840 Remote Router The CDM-840 Remote Router (Figure 1-1) is an integral component of Comtech EF Data’s Advanced VSAT Series product offering. This point-to-multipoint IP Remote Router has been developed as the “spoke” or remote site equipment in hub-and-spoke network topologies that require high quality “always-on”...

  • Page 22: Functional Description

    (FUTURE) 1:1 redundancy switch compatibility • The CDM-840 is compact – 1RU high X 16.18” deep – and consumes 20 watts at 110V input (maximum, without BUC supply) or 245 watts (maximum, with BUC supply). Functional Description Figure 1-2. Advanced VSAT Series Network Topology Example Figure 1-2 illustrates the CDM-840 Remote Router as deployed in a typical satellite-based communications network –...
  • Page 23 Revision 0 Introduction MN-CDM840 The CDM-840 supports reception and transmission of IP data over satellite links via two fundamentally different types of interface – IF and data: • The IF interface provides a bidirectional link with the satellite via the uplink and downlink equipment.

  • Page 24: Features

    1.3.1 Physical Description The CDM-840 Remote Router is constructed as a 1RU-high rack-mounting chassis, which can be free-standing if desired. Handles at the front to facilitate removal from and placement into a rack. The unit uses a single printed circuit board assembly for high reliability. All operational upgrades and enhancements are afforded via remote firmware upgrade.

  • Page 25: Dimensional Envelope

    CDM-840 Remote Router Revision 0 Introduction MN-CDM840 1.3.3 Dimensional Envelope Figure 1-3. CDM-840 Dimensional Envelope 1–5...

  • Page 26: Physical Features

    1.3.4.1 Front Panel LED Indicators Figure 1-4. CDM-840 – Front Panel View The front panel of the CDM-840 (Figure 1-4) features eight Light-Emitting Diode (LED) indicators. The LEDs indicate, in a summary fashion, the following information: Condition Green No Unit Faults or Alarms.

  • Page 27: Rear Panel

    Optional 48V DC Unit Figure 1-5. CDM-840 – Rear Panel View Figure 1-5 shows the rear panel of the CDM-840; here, external cables are attached to connectors provided on the unit. For a detailed descriptions/pinouts of each connector, see Chapter 3.

  • Page 28: Fully Accessible System Topology (Fast)

    In order to permit a lower initial cost, the unit may be purchased with only the desired features enabled. If, at a later date, a user wishes to upgrade the functionality of the CDM-840, Comtech EF Data provides Fully Accessible System Topology (FAST), which permits the purchase and installation of options through special authorization codes.

  • Page 29: Summary Of Specifications

    CDM-840 Remote Router Revision 0 Introduction MN-CDM840 Summary of Specifications Specification 8 Light-emitting Diodes (LEDs): • UNIT STATUS (Green/Amber/Red) • TRANSMITTER ON (Green/Red) Front Panel • STORED EVENT (Amber) • Tx TRAFFIC (Green/Amber/Red) • ONLINE (Green) • Rx TRAFFIC (Green/Amber/Red) •...

  • Page 30: Ber (Bit Error Rate)

    CDM-840 Remote Router Revision 0 Introduction MN-CDM840 Specification Outbound (Hub to Remote) Return (Remote to Hub) 1 – 168 Mbps 16 kbps – 15.35 Mbps (CCM) Data Rate 1 – 62 Msps (QPSK, 8-PSK) 16 ksps – 4.1 Msps (ACM)

  • Page 31: Regulatory Compliance

    CDM-840 Remote Router Revision 0 Introduction MN-CDM840 1.4.2 Regulatory Compliance • EN 30489-1 • EN 55022 Class B (Emissions) “CE” as follows: • EN 55024 (Immunity) • EN 60950 (Safety) FCC Part 15 Class B RoHS Compliance 1–11...
  • Page 32 CDM-840 Remote Router Revision 0 Introduction MN-CDM840 Notes: 1–12...

  • Page 33: Chapter 2. Installation

    Chapter 2. INSTALLATION Unpacking and Inspection The CDM-840 Remote Router and its Installation and Operation Manual are packaged in a pre- formed, reusable, cardboard carton containing foam spacing for maximum shipping protection. Be sure to keep all shipping materials for the carrier's inspection.

  • Page 34: Mounting

    MN-CDM840 Mounting If the CDM-840 is to be mounted in a rack, ensure that there is adequate clearance for ventilation, particularly at the sides. In rack systems where there is high heat dissipation, forced air cooling must be provided by top or bottom mounted fans or blowers. Under no circumstance should the highest internal rack temperature be allowed to exceed 50°C (122°F).

  • Page 35: Figure 2-1. Installation Of Optional Rear-Mounting Support Bracket Kit

    CDM-840 Remote Router Revision 0 Installation MN-CDM840 The kit is installed as illustrated in Figure 2-1 and per the following procedure: Step Description Secure the Adapter Plates to each side of the chassis at the rear, using the #10 Flat Head Screws as shown.
  • Page 36 CDM-840 Remote Router Revision 0 Installation MN-CDM840 Notes: 2–4...

  • Page 37: Chapter 3. Rear Panel Connector And Pinouts

    PINOUTS Connector Overview The rear panel connectors for the CDM-840 Remote Router, shown here in Figure 3-1, provide all necessary external connections between the unit and other equipment. Table 3-1 on the next page summarizes the connectors provided on the rear panel interface, grouped according to service function.

  • Page 38: If Connections

    CDM-840 Remote Router Revision 0 Rear Panel Connector and Pinouts MN-CDM840 Table 3-1. CDM-840 Rear Panel Connectors Connector Group Name / Ref Des Connector Type Function L-BAND Rx 50Ω Type ‘N’ female L-Band Input L-Band Output Sect. 3.2 L-BAND Tx 50Ω...

  • Page 39: Terrestrial Data Connections

    CDM-840 Remote Router Revision 0 Rear Panel Connector and Pinouts MN-CDM840 Terrestrial Data Connections 3.3.1 (FUTURE) G.703 OUT/IN Connectors, BNC This interface is not operational in the initial product release. 3.3.2 TRAFFIC GE (Gigabit Ethernet) Connector, RJ-45 This is a standard RJ-45 female modular jack, operating at 10/100/1000 Mbps, half and full duplex, auto-negotiating.

  • Page 40: Utility Connections

    CDM-840 Remote Router Revision 0 Rear Panel Connector and Pinouts MN-CDM840 Utility Connections 3.4.1 (FUTURE) REDUNDANCY Connector, DB-9F This interface is not operational in the initial product release. 3.4.2 CONSOLE Interface Connector, DB-9M The Remote Control Interface is a 9-pin Type ‘D’ male connector. It is intended for connection to an M&C computer or terminal device, and is used...

  • Page 41: Power / Ground Connections

    CDM-840 Remote Router Revision 0 Rear Panel Connector and Pinouts MN-CDM840 Power / Ground Connections 3.5.1 Alternating Current (AC) Power Interface (Standard) A detachable, non-locking, 3-prong power cord (IEC plug) supplies the Alternating Current (AC) power to the unit via this standard interface.
  • Page 42 CDM-840 Remote Router Revision 0 Rear Panel Connector and Pinouts MN-CDM840 Notes: 3–6...

  • Page 43: Chapter 4. Flash Upgrading

    Chapter 4. FLASH UPGRADING Flash Updating via Internet The CDM-840 Remote Router uses ‘Flash memory’ technology internally. This makes software upgrading very simple, and updates can now be sent over satellite, via the Internet (Figure 4-1), via E-mail, or on CD.

  • Page 44: Ethernet Ftp Upload Procedure

    CDM-840 Remote Router Revision 0 Flash Upgrading MN-CDM840 Ethernet FTP Upload Procedure Step Procedure Identify the reflashable product, firmware number, and version for download. a) Using a terminal emulator connected to the serial CONSOLE port, upon power-up of the unit a number of operational parameters, including the firmware number and...
  • Page 45 (e.g., modem, converter, etc.) and specific model/optional configuration. The hyperlinks appear as per the example to the right. For the CDM-840, the firmware download hyperlink appears as F0000408X_V###, where ‘X’ denotes the revision letter, and ### represents the firmware version.
  • Page 46 “Boot From:” can otherwise be set to force the unit to boot up using either firmware image loaded in Slot 1 or Slot 2. Reboot the CDM-840. The firmware upgrade is implemented at this time. Flash Upgrading of the CDM-840 Remote Router is now complete.

  • Page 47: Chapter 5. Ethernet Management

    Chapter 5. ETHERNET MANAGEMENT Introduction The CDM-840 Remote Router is equipped with an RJ-45 10/100 BaseT Fast Ethernet management interface, labeled MANAGEMENT FE, that is used for monitor and control purposes. This chapter provides a high-level overview of the functionality provided by this interface, and references other chapters in this manual for further details.

  • Page 48: Snmp Interface

    The CDM-840 SNMP agent supports both SNMPv1 and v2c. For proper SNMP operation, the CDM-840 MIB files must be used with the associated version of the CDM-840 router M&C. Please refer to the CDM-840 FW Release Notes for information on the required FW/SW compatibility.

  • Page 49: Web Server (Http) Interface

    Explorer Version 7.0 or higher (the examples shown use Internet Explorer Version 7.0). The user can fully control and monitor base operations of the CDM-840 from the Web Server Interface. By rolling the cursor over the navigation tabs located at the top of each page (right), the user can select from the available nested tabs.

  • Page 50: 5.4.3 Web Server Menu Tree

    Revision 0 Ethernet Management MN-CDM840 Once the valid User Name and Password are accepted, the user will see the CDM-840 Remote Router Web Server Interface “splash” page, similar to the example shown to the right: 5.4.3 Web Server Menu Tree The operations available through this interface are illustrated by this menu tree: 5–4...

  • Page 51: Home | Home .............................................................................................................. 5–6

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 The CDM-840 Web Server Interface provides access to five (5) navigation tabs (shown in blue): • Home • Admin • Configuration • Status • Utility Beyond this top-level row of navigation tabs, the diagram illustrates the available primary (green) and nested (yellow) page tabs that afford the user in-depth functionality.

  • Page 52: Home

    5.4.4.2.1 Home | Home Figure 5-1. CDM-840 Remote Router Home (Splash) page From any location within the Web Server Interface, the user can click the Home top navigation tab and/or the nested tab to return back to this top-level “splash” page.

  • Page 53: Home | Contact

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 5.4.4.2.2 Home | Contact Figure 5-2. Home | Contact page The ‘Home | Contact’ page (Figure 5-2) provides basic contact information to reach Comtech EF Data Sales and Customer Support via phone, fax, or Web/e-mail hyperlinks.

  • Page 54: Admin

    The ‘Admin’ pages (Figure 5-3 through Figure 5-7) provide the means to set up the access parameters required to facilitate communication with the CDM-840 Web Server Interface. The Admin pages are available only to users who have logged in using the Administrator Name and Password.

  • Page 55: Admin | Snmp

    Admin | SNMP Figure 5-4. Admin | SNMP page The ‘Admin | SNMP’ page (Figure 5-4) sets and returns administration information for the CDM-840 Simple Network Management Protocol (SNMP) feature. For further information about SNMP, see Section 5.3 SNMP INTERFACE. SNMP Configuration...

  • Page 56: Admin | Fast

    Admin | FAST Figure 5-5. Admin | FAST page The CDM-840 incorporates a number of optional features that may be activated by the user after purchase via Fully Accessible System Topology (FAST) codes, which are special authorization codes obtained from Comtech EF Data loaded into the unit via the ‘Admin | FAST’ page (Figure 5-5).

  • Page 57: Admin | Firmware

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 5.4.4.3.4 Admin | Firmware Figure 5-6. Admin | Firmware page The ‘Admin | Firmware’ page (Figure 5-6) is used to select the current active firmware image to be loaded for operation upon power-up or soft reboot.

  • Page 58: Admin | Auto Logout

    Once configured, the active session will be terminated if the unit is allowed to remain idle (i.e., when no user activity occurs) for the specified Auto Logout timeframe. A valid user name and password will then be required to open a new session with the CDM-840 Web Server Interface. Auto Logout Configuration To configure the Auto Logout feature, enter a value of 1 –...

  • Page 59: Configuration | Interface | Fe Mgt

    Subnet Mask using this box (the valid range for the Subnet Mask is 8–30). Link Configuration – Use the drop-down menu to select the line speed and duplex setting for the CDM-840’s FE interface. The available options are: • Auto •...

  • Page 60: Configuration | Interface | Ge

    Subnet Mask using this box (the valid range for the Subnet Mask is 8–30). Link Configuration – Use the drop-down menu to select the line speed and duplex setting for the CDM-840’s GE interface. The available options are: • Auto •...

  • Page 61: Configuration | Demod

    Configuration | Demod Figure 5-10. Configuration | Demod page The ‘Configuration | Demod’ page (Figure 5-10) is used to configure CDM-840 Rx demodulator operating parameters. Note that, for any configuration item requiring text entry, a reference to the operational ranges for that text box is provided to the right of that text box.
  • Page 62 CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 • DVB-S2 QPSK 2/3 • DVB-S2 8-PSK 8/9 • DVB-S2 32-APSK 5/6 • DVB-S2 QPSK 3/4 • DVB-S2 8-PSK 9/10 • DVB-S2 32-APSK 8/9 • DVB-S2 QPSK 4/5 • DVB-S2 16-APSK 2/3 •...

  • Page 63: Configuration | Mod

    Configuration | Mod Figure 5-11. Configuration| Mod page The ‘Configuration | Mod’ page (Figure 5-11) permits the user to configure CDM-840 Tx modulator operations. Note that, for any configuration item requiring text entry, a reference to the operational ranges for that text box is provided to the right of that text box.
  • Page 64 CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 • VersaFEC MODCOD 2 – QPSK 0.631 • VersaFEC MODCOD 8 – 16-QAM 0.731 • VersaFEC MODCOD 3 – QPSK 0.706 • VersaFEC MODCOD 9 – 16-QAM 0.780 • VersaFEC MODCOD 4 – QPSK 0.803 •...

  • Page 65: Configuration | Arp

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 5.4.4.4.4 Configuration | ARP Figure 5-12. Configuration | ARP page The ‘Configuration | ARP’ page (Figure 5-12) is used to configure the router’s ARP (Address Resolution Protocol) parameters. Add Static ARP This section allows the user to directly add a static ARP entry. Note that the index will automatically increment to the next available number.

  • Page 66: Configuration | Routing

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 IP – Entry IP Address, format XXX.XXX.XXX.XXX. MAC – Entry MAC Address, format YY:YY:YY:YY:YY. Type (read-only) – Entry Type is identifiable as Static or Dynamic and cannot be edited. Click [Submit Changes] once the desired edits have been made in this section.
  • Page 67 CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 Route Table (Edit) This section displays and allows the user to edit all current Route Table entries. Note that the optional Header Compression and Payload Compression features are FUTURE offerings at this time and are therefore non-functional on this page. Otherwise, note the following: Index –...

  • Page 68: Configuration | Wan

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 5.4.4.4.6 Configuration | WAN pages Click the Label or QoS tab to continue. 5.4.4.4.6.1 Configuration | WAN | Label Figure 5-14. Configuration | WAN | Label page The ‘Configuration | WAN | Label’ page (Figure 5-14) is used to assign up to four Generic Stream Encapsulation (GSE) labels.

  • Page 69: Configuration | Wan | Qos

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 5.4.4.4.6.2 Configuration | WAN | QoS (a) Page with QoS Control Mode = Off (b) Page with QoS Control Mode = Diffserv Figure 5-15. Configuration | WAN | QoS pages Figure 5-15 displays the ‘Configuration | WAN | QoS’ page when QoS Control Mode is set either to Off or Diffserv.

  • Page 70: Cdm-840 Remote Router Revision

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 (a) Page with QoS Control Mode = Max/Priority (b) Page with QoS Control Mode = Min/Max Figure 5-16. Configuration | WAN | QoS pages (cont) 5–24...
  • Page 71 WAN | QoS’ page appears as shown in Figure 5-15(a). • DiffServ –When selected, the CDM-840 operates in Differentiated Services (DiffServ) Mode to make it fully compliant to the Differentiated Services QoS RFC (Request For Comments) standards. The ‘Configuration | WAN | QoS’ page appears as shown in Figure 5-15(b).
  • Page 72 CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 • High Drop Precedence (% full)) [0 – 99] – In case of congestion, the WRED is applied after the queue depth exceeds the configured percentage value assigned for the Drop Precedence value b011.
  • Page 73 CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 For the “Min/Max” page: From left to right, note the following: • Protocol – Use the drop-down menu to select the Protocol as UDP, TCP, ICMP, RTP, VOICE, VIDEO, RTPS, FTP, HTTP, TELNET, SMTP, SNMP, All-IP, Non-IP, or All.

  • Page 74: Figure 5-17. Configuration | Buc Page

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 5.4.4.4.7 Configuration | BUC (Block Up Converter) Figure 5-17. Configuration | BUC page The ‘Configuration | BUC’ page (Figure 5-17) is used to configure Block Up Converter parameters, and display the BUC status for L-Band operation.

  • Page 75: Configuration | Lnb (Low Noise Block Down Converter)

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 5.4.4.4.8 Configuration | LNB (Low Noise Block Down Converter) Figure 5-18. Configuration | LNB page The ‘Configuration | LNB’ page (Figure 5-18) is used to configure Low Noise Block Down Converter parameters, and display the LNB status for L-Band operation.

  • Page 76: Status

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 5.4.4.5 Status pages The Status pages (Figure 5-19 through Figure 5-23) provide the user with status, event logging, and operational statistics windows. Click the Statistics or Monitor tab to continue. 5.4.4.5.1 Status | Statistics pages While the Compression tab is selectable, this feature is not available in this initial product release.
  • Page 77 CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 The sections provided and terminologies employed in each statistics table are as follows: Ethernet Statistics From left to right: Total Pkts Xmitted: Total number of packets transmitted. Total Pkts Recd: Total number of packets received.

  • Page 78: Status | Statistics | Router

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 5.4.4.5.1.2 Status | Statistics | Router Figure 5-20. Status | Statistics | Router page The ‘Status | Statistics | Router’ page (Figure 5-20) is used to view cumulative router traffic information. Clear Statistics Click [Clear] to clear all router statistics from the buffer.

  • Page 79: 5.4.4.5.1.3 Status | Statistics | Qos

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 5.4.4.5.1.3 Status | Statistics | QoS (a) Page with QoS Control Mode = Off (b) Page with QoS Control Mode = Diffserv Figure 5-21. Status | Statistics | QoS pages Figure 5-21 displays the ‘Status | Statistics | QoS’ page when QoS Control Mode is set (via the ‘Configuration | WAN | QoS’...

  • Page 80: Figure 5-22. Status | Statistics | Qos Pages (Cont)

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 Page with QoS Control Mode = Max/Priority or Min/Max Figure 5-22. Status | Statistics | QoS pages (cont) For any active configuration, note the following: Clear QoS Counters Click [Clear] to clear all router statistics from the buffer.

  • Page 81: Status | Monitor Page

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 5.4.4.5.2 Status | Monitor page Figure 5-23. Status | Monitor page The ‘Status | Monitor’ page (Figure 5-23) provides the unit temperature, alarms summary, plus a scrollable read-only window that displays any events and alarms as logged by the unit during normal operation.

  • Page 82: Utility

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 5.4.4.6 Utility pages Click the Utility or Reboot tab to continue. 5.4.4.6.1 Utility | Utility Page Figure 5-24. Utility | Utility page The ‘Utility | Utility’ page (Figure 5-24) provides an array of top-level system operation controls, configuration storage/selection, and test utilities.
  • Page 83 CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 Click [Submit] once the desired changes have been made to these items. Set Time (hh:mm:ss) – Enter a time using HH:MM:SS format (where HH = hour [00 to 23], MM = minutes [00 to 59], and SS = seconds [00 to 59]).

  • Page 84: Figure 5-25. Utility | Reboot Page

    CDM-840 Remote Router Revision 0 Ethernet Management MN-CDM840 Once the desired BERT settings have been entered in this section, click [Submit] as needed to save and execute these changes. BERT Monitor This read-only section displays the ongoing BERT. Click [Restart] to restart the BERT Monitor, or [Update] to refresh a test already in progress.

  • Page 85: Chapter 6. Forward Error Correction

    The method of Forward Error Correction (FEC) utilized by the CDM-840 Remote Router depends on the direction of signal processing in use: On the receive (Rx) side, the CDM-840 operates with error correction based upon the DVB-S2 standard for QPSK, 8PSK, 16APSK and 32APSK with concatenated Low Density Parity Code (LDPC) and Bose-Chaudhuri-Hocquenghem (BCH).

  • Page 86: Range Of Data Rates

    CDM-840 Remote Router Revision 0 Forward Error Correction MN-CDM840 applications this is not a drawback. Links with LDPC normally operate at multi-megabit data rates where latency effects are minimal. The standard block size for LDPC is 64,800 bits, and for lower data rate applications there is a short frame block at 16,800 bits that suffers only a small error correcting loss (0.2 to 0.5 dB) compared to the standard block.

  • Page 87: Figure 6-1. The Versafec Codes Versus Shannon Capacity

    CDM-840 Remote Router Revision 0 Forward Error Correction MN-CDM840 2) To provide combinations of modulation and coding (ModCods) that are not only suitable for Constant Coding and Modulation (CCM) applications, but are also the basis for a patent- pending Adaptive Coding and Modulation (ACM) system (ACM will be available in future releases of the CDD-880).

  • Page 88: Rx/Tx Error Performance Characteristics

    For Rx DVB-S2 Operation: Figure 6-2 through Figure 6-5 illustrate the guaranteed error performance characteristics of the CDM-840 while receiving with Normal frames (64,800 bits), Pilots ON. QPSK 1/4, 1/3, 2/5 are shown for information only and are not available in the CDM-840.

  • Page 89: Figure 6-2. Dvb-S2 Qpsk Packet Error Rate Versus Es/No

    CDM-840 Remote Router Revision 0 Forward Error Correction MN-CDM840 Figure 6-2. DVB-S2 QPSK Packet Error Rate versus Es/No (QPSK 1/4, 1/3, and 2/5 provided for information only) 6–5...

  • Page 90: Figure 6-3. Dvb-S2 8Psk Packet Error Rate Versus Es/No

    CDM-840 Remote Router Revision 0 Forward Error Correction MN-CDM840 Figure 6-3. DVB-S2 8PSK Packet Error Rate versus Es/No 6–6...

  • Page 91: Figure 6-4. Dvb-S2 16Apsk Packet Error Rate Versus Es/No

    CDM-840 Remote Router Revision 0 Forward Error Correction MN-CDM840 Figure 6-4. DVB-S2 16APSK Packet Error Rate versus Es/No 6–7...

  • Page 92: Figure 6-5. Dvb-S2 32Apsk Packet Error Rate Versus Es/No

    CDM-840 Remote Router Revision 0 Forward Error Correction MN-CDM840 Figure 6-5. DVB-S2 32APSK Packet Error Rate versus Es/No 6–8...

  • Page 93: Figure 6-6. Versafec Codec – Bpsk, Rate 0.488

    CDM-840 Remote Router Revision 0 Forward Error Correction MN-CDM840 Eb/No in dB 1E-1 Comtech VersaFEC® Codec Rate 0.488 BPSK Uncoded BPSK/QPSK 1E-2 1E-3 Rate 0.488 BPSK 1E-4 Typical performance shown - guaranteed performance curve is 0.3 dB to the right...

  • Page 94: Figure 6-7. Versafec Codec – Qpsk, Rate 0.533, 0.631, 0.706 And 0.803

    CDM-840 Remote Router Revision 0 Forward Error Correction MN-CDM840 Eb/No in dB 1E-1 Comtech VersaFEC® Codec Rate 0.533, 0.631, 0.706, Uncoded and 0.803 QPSK BPSK/QPSK 1E-2 Rate Rate Rate Rate 1E-3 0.533 0.631 0.706 0.803 QPSK QPSK QPSK QPSK 1E-4...

  • Page 95: Figure 6-8. Versafec Codec – 8-Qam, Rate 0.642, 0.711, And 0.780

    CDM-840 Remote Router Revision 0 Forward Error Correction MN-CDM840 Eb/No in dB 1E-1 Comtech VersaFEC® Codec Rate 0.642, 0.711, 0.780 Uncoded BPSK/QPSK 8-QAM 1E-2 Rate Rate Rate 0.642 0.711 0.780 8-QAM 8-QAM 8-QAM 1E-3 Uncoded 8-PSK 1E-4 1E-5 1E-6 1E-7...

  • Page 96: Figure 6-9. Versafec Codec – 16-Qam, Rate 0.731, 0.780, 0.829 And 0.853

    CDM-840 Remote Router Revision 0 Forward Error Correction MN-CDM840 Eb/No in dB 1E-1 Comtech VersaFEC® Codec Rate 0.731, 0.780, 0.829 and 0.853 16-QAM Uncoded BPSK/QPSK 1E-2 Uncoded 16-QAM Rate Rate Rate Rate 0.731 0.780 0.829 0.853 16-QAM 16-QAM 16-QAM 16-QAM...

  • Page 97: Appendix A. Fast Activation Procedure

    In order to permit a lower initial cost, the unit may be purchased with only the desired features enabled. If, at a later date, the user wishes to upgrade the functionality of a unit, Comtech EF Data provides Fully Accessible System Topology (FAST), which permits the purchase and installation of options through special authorization codes.

  • Page 98: Activation Procedure Via Web Server Interface

    When contacting a Comtech EF Data sales representative during normal business hours to order features, the user will be asked to provide the CDM-840’s serial number. This serial number is provided in the FAST Upgrade section of the ‘Admin | FAST’ page:...
  • Page 99 A.2.3 Acquire/Enter FAST Access Code Once a valid unit serial number is provided to and verified by the Comtech EF Data sales representative, Comtech EF Data Customer Support will then provide an invoice, the 20-digit FAST Access Code, and FAST option activation instructions. The user should carefully enter the FAST Access Code into the FAST Code 1 text box (provided in the FAST Upgrade section of the ‘Admin | FAST’...
  • Page 100 CDM-840 Remote Router Revision 0 Appendix A MN-CDM840 Notes: A–4...

  • Page 101: Appendix B. Remote Control

    Overview This appendix describes the protocol and message command set for remote monitor and control (M&C) of the CDM-840 Remote Router. The electrical interface is an EIA-232 connection (for the control of a single device), and data is transmitted in asynchronous serial form, using ASCII characters.

  • Page 102: Packet Structure

    CDM-840 Remote Router Revision 0 Appendix B MN-CDM840 The Controller, which is in charge of the process of monitor and control, is the only device that is permitted to initiate, at will, the transmission of data. Targets are only permitted to transmit when they have been specifically instructed to do so by the Controller.

  • Page 103: B.4.2  Target Address

    CDM-840 Remote Router Revision 0 Appendix B MN-CDM840 B.4.2 Target Address In EIA-232 applications this value is set to 0. 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 104: B.4.6  Optional Message Arguments

    CDM-840 Remote Router Revision 0 Appendix B MN-CDM840 2. 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: CMD? meaning “what’s the value of this parameter?”), the Target would respond with CMD=xxx, where xxx represents the parameter in question.

  • Page 105: Remote Commands And Queries

    ‘Controller’ device – typically a PC or ASCII dumb terminal. An example of such a device is shown to the right. From this interface, the user may type ‘help[cr]’ or ‘?[cr]’ to display the CDM-840’s available commands and queries, and to review instructions for using the interface.
  • Page 106 CDM-840 Remote Router Revision 0 Appendix B MN-CDM840 B.5.1 Unit Parameter Commands and Queries Command Query Parameter Number of Response to (Instruction Description of Arguments (Instruction Response to Query Type Arguments Command & Qualifier) & Qualifier) Default DPW= Command Only.
  • Page 107 CDM-840 Remote Router Revision 0 Appendix B MN-CDM840 Command Query Parameter Number of Response to (Instruction Description of Arguments (Instruction Response to Query Type Arguments Command & Qualifier) & Qualifier) Management 12 bytes, Query only. MAC? MAC=aabbccddeeff MAC Address alpha- (see Description of Returns the unique MAC Address for the modem.
  • Page 108 CDM-840 Remote Router Revision 0 Appendix B MN-CDM840 Notes: B–8...
  • Page 109 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 0.254 — 25.4 1.578 x 10 1 foot 30.480 12.0 —...
  • Page 110 2114 85281 WEST TH STREET TEMPE ARIZONA 480 • 333 • 2200 PHONE 480 • 333 • 2161...

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