Comtech EF Data CDM-Qx Installation And Operation Manual
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Comtech EF Data CDM-Qx Installation And Operation Manual

Multi-channel satellite modem with doubletalk carrier-in-carrier
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CDM-Qx
Multi-Channel Satellite Modem
with DoubleTalk™ Carrier-in-Carrier
®

Installation and Operation Manual

(Includes data for the CDM-Qx and CDM-QxL Configurations)
For Firmware Versions 1.6.6/2.1.5 or higher
(see New in this Release – Section 1.4)
IMPORTANT NOTE:
The information contained in this document supersedes all previously published
information regarding these products. Product specifications are subject to change without prior notice.
.IOM
Part Number MN/CDMQX
Revision 7

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  • Page 1: Installation And Operation Manual

    Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier ® Installation and Operation Manual (Includes data for the CDM-Qx and CDM-QxL Configurations) For Firmware Versions 1.6.6/2.1.5 or higher (see New in this Release – Section 1.4) IMPORTANT NOTE: The information contained in this document supersedes all previously published information regarding these products.
  • Page 3 (see New in this Release – Section 1.4) Part Number MN/CDMQx.IOM Revision 6 December 17, 2009 Copyright © Comtech EF Data, 2009. All rights reserved. Printed in the USA. Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: 480.333.2161...
  • Page 4 This page is intentionally blank.

  • Page 5: Table Of Contents

    Table of Contents TABLE OF CONTENTS ....................III   TABLES ........................XII   FIGURES ........................XII   PREFACE ........................XV     About this Manual ........................xv Reporting Comments or Suggestions Concerning this Manual ..........xv   Conventions and References ...................... xv  ...

  • Page 6: Table Of Contents

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Table of Contents MN/CDMQX.IOM 1.3.3   Major Assemblies ....................... 1–5   1.3.4   Dimensional Envelope ....................1–6   1.3.5   Physical Features ......................1–6   1.3.5.1   Front Panel ......................1–6  ...
  • Page 7 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Table of Contents MN/CDMQX.IOM   Connector Overview ..................... 3–1     Base Chassis Connections..................... 3–4   3.2.1   Power Connector ......................3–4   3.2.1.1   AC Power Connector ..................3–4  ...
  • Page 8 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Table of Contents MN/CDMQX.IOM   (MAIN MENU:) Config (Configuration) ..............5–9   5.4.1   CONFIG: Remote ..................... 5–10   5.4.1.1   CONFIG: Remote Local ................5–10   5.4.1.2   CONFIG: Remote Serial ................
  • Page 9 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Table of Contents MN/CDMQX.IOM 5.4.8.2   CONFIG: Mask Receive ................5–38   5.4.8.3   CONFIG: Mask Reference................5–39   5.4.8.4   CONFIG: Mask BUC (CDM-QxL only) ............. 5–39   5.4.8.5  ...
  • Page 10 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Table of Contents MN/CDMQX.IOM 5.7.8   INFO: Ref ......................... 5–57   5.7.9   INFO: ID ........................5–57     (MAIN MENU:) Save/Load ..................5–58   5.8.1   INFO: SAVE/LOAD Save ................... 5–58  ...
  • Page 11 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Table of Contents MN/CDMQX.IOM 6.5.4.3   Config Mdm (Configure Modem) Pages ............6–14   6.5.4.3.1   Config Mdm | Quick View ................6–14   6.5.4.3.1.1   Config Mdm | Quick View | Config Pages ........... 6–16  ...
  • Page 12 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Table of Contents MN/CDMQX.IOM   What is DoubleTalk Carrier-in-Carrier? ..............9–1     Application Requirements.................... 9–1     System Functionality ....................9–2     CnC Performance Characterization ................9–4   9.4.1  ...
  • Page 13 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Table of Contents MN/CDMQX.IOM B.2.4   Enter FAST Codes ....................B–5   B.2.4.1   Entering the Base Unit FAST CODE ..............B–5   B.2.4.2   Entering the Installed Module FAST CODE ............B–6  ...
  • Page 14 Table of Contents MN/CDMQX.IOM Tables Table 1-1. CDM-Qx/QxL Rear Panel Connectors – Base Chassis ..........1–8 Table 1-2. FAST and FAST-accessible Hardware Options ............1–12 Table 3-1. Rear Panel External Connections ................3–3 Table 3-2. 485/232 (Remote Control) Connector Pin Assignments ........... 3–5 Table 3-3.
  • Page 15 Figure 6-3. 8-PSK/TCM Rate 2/3 with and without concatenated R-S Outer Code ......7–10 Figure 6-4. Comtech EF Data Turbo Product Codec Rate 3/4 QPSK, 8-PSK and 16-QAM ....7–11 Figure 6-5. Comtech EF Data Turbo Product Codec Rate 7/8 QPSK, 8-PSK and 16-QAM ....7–12 Figure 6-6.
  • Page 16 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Table of Contents MN/CDMQX.IOM This page is intentionally blank.

  • Page 17: Preface

    PREFACE About this Manual This manual provides installation and operation information for the Comtech EF Data CDM-Qx ® Multi-Channel Modem with DoubleTalk™ Carrier-in-Carrier . This is a technical document intended for earth station engineers, technicians, and operators responsible for the operation and maintenance of the 70-140 MHz CDM-Qx and its L-Band counterpart, the CDM-QxL.

  • Page 18: Trademarks

    EN60950: Safety of Information Technology Equipment, including Electrical Business Machines. Observe the following: The CDM-Qx (70/140 MHz) is rated for operation over the range 100 to 240 VAC. It has a maximum power consumption of 120 watts, and draws a maximum of 1 amp.

  • Page 19: Environmental

    Damage to the cards may result. CAUTION The CDM-Qx/QxL is shipped with a line inlet cable suitable for use in the country of operation. If it is necessary to replace this cable, ensure the replacement has an equivalent specification.

  • Page 20: Emc (Electromagnetic Compatibility)

    CDM-Qx/QxL AC Modem Installation: The installation and connection to the line supply must be made in compliance to local or national wiring codes and regulations. The CDM-Qx/QxL is designed for connection to a power system that has separate ground, line and neutral conductors.
  • Page 21 IMPORTANT • Connections to the transmit and receive IF ports (Type ‘BNC’ female connectors for the CDM-Qx, Type ‘N’ female connectors for the CDM-QxL) should be made using a good quality coaxial cable; e.g., RG58/U (50Ω) or RG59/U (75Ω). •...

  • Page 22: 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 23: Exclusive Remedies

    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,...

  • Page 24: 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: • Contact the Comtech EF Data Customer Support Department. Be prepared to supply the Customer Support representative with the model number, serial number, and a description of the problem.

  • Page 25: Chapter 1. Introduction

    (1RU) chassis. The CDM-Qx/QxL offers flexibility, redundancy, integration, and performance with four slots configurable as modulators or demodulators. The CDM-Qx operates on the 70/140 MHz IF frequency, while the CDM-QxL (Figure 1-1) is the L-Band (950MHz – 1950MHz) version of the same modem.

  • Page 26: Doubletalk™ Carrier-In-Carrier

    Drop and Insert, closed network version; • Embedded Distant-end Monitor and Control (EDMAC) (see Note) • Automatic Uplink Power Control (AUPC) Refer to Sect. 1.3 for in-depth product information and Sect. 1.5 for the CDM-Qx/QxL Summary of Specifications. ® 1.1.2 DoubleTalk™ Carrier-in-Carrier ®...

  • Page 27: Functional Description

    Revision 7 Introduction MN/CDMQx.IOM Functional Description The CDM-Qx/QxL Multi-Channel Satellite Modem has two fundamentally different types of interface – IF and Data: • The Data interface can be a bi-directional path, which connects with the customer’s equipment (assumed to be the DTE) and the modem (assumed to be the DCE).

  • Page 28: Figure 1-2. Cdm-Qx/Qxl Open Network Satellite Modem Block Diagrams

    Slot 1 and a demodulator in Slot 2 along with a Quad E1 Data Interface Module in Slots 3 and 4. Figure 1-2. CDM-Qx/QxL Open Network Satellite Modem Block Diagrams 1–4...

  • Page 29: Features

    Rack handles at the front facilitate removal from and placement into a rack. 1.3.2 Compatibility The CDM-Qx/QxL is backwards compatible with a number of Comtech EF Data CDM, SDM, and SLM modems. 1.3.3 Major Assemblies...

  • Page 30: Dimensional Envelope

    Front Panel Figure 1-4. Front Panel View (CDM-Qx shown) Figure 1-4 shows the front panel of the CDM-Qx/QxL Open Network Satellite Modem. The front panel features (from left), a USB port; eight Light-Emitting-Diode (LED) indicators; a keypad; and a Vacuum Fluorescent Display (VFD): •...

  • Page 31: Rear Panel

    1.3.5.2 Rear Panel Figure 1-5 shows the connectors installed in the rear panel of the CDM-Qx/QxL Multi-Channel Satellite Modem. As outlined in A CDM-Qx/QxL base chassis features two IF connectors and three Utility connectors that are typical for all operation. Additionally, an Alarms connector, not part of the base chassis but included in this table for reference only, is provided with every available data interface module.

  • Page 32: Hardware Options

    There are four hardware options available: • The first hardware option, Comtech EF Data’s Turbo Product Codec (TPC), represents a very significant development in the area of Forward Error Correction (FEC). It provides one of the best FEC technologies currently available, and is now offered with a sufficient range of code rates and modulation types to optimize link performance under any conditions.

  • Page 33: Cdm-Qxl L-Band

    1.3.7 Data Interfaces The CDM-Qx/QxL can be ordered with a number of interfaces. Each data interface can operate on a Modulator or Demodulator. This allows the user to exchange interface cards for different applications. The interfaces offered include: •...

  • Page 34: 1.3.10 Edmac

    PC. This simplifies software upgrading, and updates can be sent via the Internet (using the CDM-Qx/QxL Web Server Interface), e-mail, or on CD. The upgrade can be performed without opening the unit, by simply connecting the modem to the USB port or Ethernet port of a computer.

  • Page 35: Fully Accessible System Topology (Fast)

    In order to permit a lower initial cost, the modem may be purchased with only the desired features enabled. If, at a later date, the user wishes to upgrade the functionality of the modem, Comtech EF Data provides Fully Accessible System Topology (FAST), which permits the purchase and installation of options through special authorization codes loaded into the unit either via the front panel keypad or entered remotely via the remote port located on the modem rear panel.

  • Page 36: 1.3.13 Supporting Hardware And Software

    IF Switch (L-Band) CRS-280L* * For use in 1:N applications only. Up to one modulator and one demodulator allowed per CDM-Qx/QxL. ODU Interoperability via FSK / EDMAC The CDM-QxL incorporates a Frequency Shift Keyed (FSK) serial link that, when activated on the Rx-IF port of a CDM-QxL, enables the modem to communicate with the Comtech EF Data line of RF Ku- and C-Band Transceivers.

  • Page 37: New In This Release

    The EDMAC overhead channel may also be used to convey M&C data to a RF Transceiver at the distant end of a satellite link if it is connected to a CDM-Qx, or to a BUC or LNB at the distant end of a satellite link if it is connected to a CDM-QxL.

  • Page 38: Summary Of Specifications

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Introduction MN/CDMQx.IOM Summary of Specifications 1.5.1 Modulator Note: Features not in the initial product release are identified in parentheses. Modulation See Table A-5 Symbol rate range Up to 10 Msps (lower end is modulation and FEC rate dependant). Refer to Figure A-1.

  • Page 39: Demodulator

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Introduction MN/CDMQx.IOM 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 Symbol Rate, R Comtech EF Data CDM-Qx Transmit Power Spectral Density, referred to symbol rate...
  • Page 40 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Introduction MN/CDMQx.IOM VITERBI BER Rate 1/2 (B, Q) Rate 3/4 (Q) Rate 7/8 (Q) performance Guaranteed Eb/No: Guaranteed Eb/No: Guaranteed Eb/No: (met in the presence (typical value in (typical value in...
  • Page 41 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Introduction MN/CDMQx.IOM TURBO PRODUCT Rate 7/8 (Q) Rate 7/8 (8-PSK) Rate 7/8 (16-QAM) CODEC Guaranteed Eb/No: Guaranteed Eb/No: Guaranteed Eb/No: Rate 7/8 QPSK (typical value in (typical value in (typical value in...

  • Page 42: Data Interfaces

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Introduction MN/CDMQx.IOM 1.5.3 Data Interfaces Note: Features not in the initial product release are identified in parentheses. EIA-530 Synchronous RS-232 EIA-422/EIA-530 DCE (Rates up to 12 Mbps) 25-pin D-sub (female) EIA-530 Also supports X.21(Rates up to 2.048 Mbps)

  • Page 43: Data Rate Ranges

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Introduction MN/CDMQx.IOM 1.5.5 Data Rate Ranges FEC Type Modulation Code Rate Data Rate Range Viterbi BPSK Rate 1/2 32 kbps to 5 Mbps Viterbi QPSK Rate 1/2 32 kbps to 10 Mbps...

  • Page 44: Miscellaneous

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Introduction MN/CDMQx.IOM 1.5.7 Miscellaneous • Tactile keypad: 6 keys (Up/Down, Left/Right, Enter/Clear) Front panel • VFD – Vacuum Fluorescent Display (blue): 2 lines of 40 characters each Loopbacks Internal IF loopback, RF loopback, digital loopback, and inward/outward...

  • Page 45: Chapter 2. Installation

    Chapter 2. INSTALLATION Unpacking The CDM-Qx/QxL Satellite Modem and its Installation and Operation Manual are packaged and shipped in a pre-formed, reusable cardboard carton containing foam spacing for maximum shipping protection. Do not use any cutting tool that extends more than 1” into the container and cause damage to the unit.

  • Page 46: Mounting

    MN/CDMQX.IOM Mounting If the CDM-Qx/QxL 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 47: Figure 2-1. Installation Of Optional Rear-Mounting Support Brackets

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Installation MN/CDMQX.IOM Equipment Rack Rear Mounting Rail #10 Shoulder Screw Support Bracket #10 Flat Washer #10 Flat Washer #10 Bracket Bolt #10 Split Washer #10 Hex Nut Back of unit Figure 2-1. Installation of Optional Rear-Mounting Support Brackets...

  • Page 48: Method B: Optional Bearingless Side-Railings

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Installation MN/CDMQX.IOM 2.2.2 Method B: Optional Bearingless Side-Railings Figure 2-2 depicts installation of the optional side-railings FP/SL0006, using standard shop tooling and customer-furnished standard shop hardware: Optional Side-railings FP/SL0006 Quantity CEFD Part Number...

  • Page 49: Select Internal If Loop

    PANEL OPERATION for details). The demod should synchronize, and the green Rx TRAFFIC LED should illuminate. If the unit does not pass this test, call Comtech EF Data Customer Support for assistance. Connect External Cables Having verified correct operation in IF loop, enter the desired configuration and proceed to connect all external cables to the connectors outlined in the next chapter (Chapter 3.
  • Page 50 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Installation MN/CDMQX.IOM Notes: 2–6...

  • Page 51: Chapter 3. Rear Panel Connectors

    CONNECTORS Connector Overview The CDM-Qx/QxL Multi-Channel Satellite Modem rear panel can be customized to meet user requirements. As per the three configuration examples shown here in Figure 3-1, optional data interface modules, used in tandem with the base chassis connectors, provide all necessary external connections between the modem and other equipment.
  • Page 52 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Rear Panel Connectors MN/CDMQX.IOM On the next page, Table 3-1 summarizes the connectors provided on the rear panel for both the base chassis and the optional data interfaces, grouped according to service function.

  • Page 53: Table 3-1. Rear Panel External Connections

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Rear Panel Connectors MN/CDMQX.IOM Table 3-1. Rear Panel External Connections Name Conn Type Function Base Chassis: TYPICAL ALL CONFIGURATIONS (See Sect. 3.2) AC Plug Modem Power DC Plug (Optional – CDM-QxL)

  • Page 54: Base Chassis Connections

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Rear Panel Connectors MN/CDMQX.IOM Base Chassis Connections 3.2.1 Power Connector For continued operator safety, always replace the fuses with the correct type and rating. IMPORTANT 3.2.1.1 AC Power Connector A standard, detachable, non-locking, 3-prong power cord (IEC plug) supplies the Alternating Current (AC) power to the modem.

  • Page 55: M&C 10/100Baset Connector

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Rear Panel Connectors MN/CDMQX.IOM 3.2.3 M&C 10/100BaseT Connector The M&C 10/100BaseT connector is an 8-pin RJ-45 10/100BaseT Ethernet port providing access to the modem’s management functions. A green LED lights to acknowledge data traffic.

  • Page 56: Data Interface Connectors

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Rear Panel Connectors MN/CDMQX.IOM either 50Ω or 75Ω. Input level is 0 dBm minimum to +20 dBm maximum at either 1, 2, 5, 10, or 20 MHz. When external reference is enabled, the internal 10 MHz reference oscillator is phase locked to the external reference input by a 10Hz bandwidth PLL.

  • Page 57: Balanced G.703 Connector Tx/Rx Connector

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Rear Panel Connectors MN/CDMQX.IOM 3.3.2 Balanced G.703 Connector Tx/Rx Connector The Balanced G.703 connection is a 15-pin ‘D’ type female (DB-15F) connector located on the rear mounting plate of the modulator or demodulator.

  • Page 58: Data Interface Connector

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Rear Panel Connectors MN/CDMQX.IOM 3.3.4 EIA-530 Data Interface Connector The Data connector is a 25-pin ‘D’ type female (DB-25F). This connector conforms to the RS-530 pinout, which allows for connection of different electrical standards, including EIA-422, V.35, and EIA-232.

  • Page 59: Quad E1 Data Interface Connectors

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Rear Panel Connectors MN/CDMQX.IOM 3.3.5 Quad E1 Data Interface Connectors The Quad E1 Data interface card allows the user to connect one to four different terrestrial E1 ports, with each port independently configurable for full E1 (framed or unframed E1 data), or fractional E1 (with D&I).

  • Page 60: Hssi Interface And Connectors

    3.3.6 HSSI Interface and Connectors This data interface is a plug-in module that inserts into the rear of the CDM-Qx/QxL’s Modulators or Demodulators. It provides physical and electrical connection between the external terrestrial device and the internal circuitry of the modulator or demodulator. By convention, a modem is Data Communications Equipment (DCE) where Tx data enters the data interface and Rx data exits it.

  • Page 61: Hssi Interface Specifications

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Rear Panel Connectors MN/CDMQX.IOM 3.3.6.1 HSSI Interface Specifications Item Requirement 32 to 20 Mbps Data Rate Range ST, TT (or external) , SD, TA, CA, RT, RD, SG Signals Supported DCE, 50-pin mini-D female per EIA-613 (HSSI) Connector Per EIA-612 (10KH ECL compatible).

  • Page 62: Hssi Connector Pin Assignments

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Rear Panel Connectors MN/CDMQX.IOM 3.3.6.2 HSSI Connector Pin Assignments The HSSI interface features a 50-pin female SCSI-2 connector (mini-D), with pin assignments as follows: HSSI EIA-613 Circuit Signal Function Pin # (+,-)

  • Page 63: Chapter 4. Flash Upgrading

    Chapter 4. FLASH UPGRADING Flash Updating via Internet The CDM-Qx/QxL Open Network Satellite Modem eliminates the need for updating firmware by physically replacing EPROMs. Instead, the CDM-Qx/QxL uses ‘Flash memory’ technology internally. This makes software upgrading very simple, and updates can now be sent via the Internet (Figure 4-1), via E-mail, or on CD.

  • Page 64: Ethernet Ftp Upload Procedure

    3. Download the correct firmware file to this temporary folder. As of July 2008, Comtech EF Data began incorporating an enhanced flash memory chip into its chassis design. To accommodate this design upgrade, units that employ the original vs. the currently-used flash memory chips are identifiable by the installed Firmware Version.
  • Page 65 “dir” command to list the files extracted from the downloaded archive file. 6. Connect the external PC serial port to the CDM-Qx/QxL modem M&C 10/100 Ethernet port via a hub or a switch, or directly to a PC using a crossover cable.
  • Page 66 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Flash Upgrading MN/CDMQX.IOM 7. Send a “ping” command to the modem to verify the connection and communication. First, determine the IP address of the modem remotely or using the front panel: •...

  • Page 67: Chapter 5. Front Panel Operation

    Display Area Figure 5-1. CDM-Qx/QxL – Front Panel View The user can fully control and monitor the operation of the CDM-Qx/QxL from the front panel using the keypad and display. Nested menus are used, which display all available options and prompt the user to carry out a required action.

  • Page 68: Led Indicators

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.1.2 LED Indicators In general, the Alarm relay state will reflect the state of the Front Panel LEDs. For example, if the Unit Status LED is red, the Unit Alarm relay will be active, etc. The one exception is the Transmit Traffic relay.

  • Page 69: Keypad

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.1.3 Keypad The keypad has an auto-repeat feature. If a key is held down for more than 1 second, the key action will repeat, automatically, at the rate of 15 keystrokes per second. This is particularly useful when editing numeric fields, with many digits, such as frequency or data rate.

  • Page 70: Front Panel Vacuum Fluorescent Display (Vfd)

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.1.4 Front Panel Vacuum Fluorescent Display (VFD) CDM-Qx/QxL features Vacuum Fluorescent Display (VFD). The VFD is an active display showing two lines of 40 characters each. It produces a blue light, the brightness of which can be controlled by the user.

  • Page 71: 5.1.4.1.1 Modems

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM A plug-in device that includes an ‘F’ suffix indicates the presence of an unmasked failure: | (right-hand display area) <RX> | (right-hand display area) In this example, the upper right transmitter has a fault, the details of which may be viewed using such menus as Monitor or Alarms.

  • Page 72: 5.1.4.1.3 Spectrum Analyzer

    Only one Rx is allowed to enable spectrum analyzer in a chassis. To view the spectrum, the user needs to access the CDM-Qx Web Server Interface via a web browser.

  • Page 73: Table 5-1. Prinicpal Menu Tree

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM Table 5-1. Prinicpal Menu Tree Section Title Remarks Opening Screen Main Menu Select: Config; Monitor; Test; Info; Save/Load; Utiity Config Select: Remote; Tx; Rx; Group; Frame; Interface; Ref; Mask; (CDM-QxL only) ODU Config →...

  • Page 74: Main Menu Screen

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM MAIN MENU Screen MAIN MENU: Config Monitor Test Info Save/Load Utility Use the arrow keys to select from the choices shown on this top-level selection screen, then ◄...

  • Page 75: Main Menu:) Config (Configuration)

    Mask 5.4.8 ‘all ones’ condition is taken to be the Alarm Indication Signal (AIS). The CDM-Qx monitors for the AIS condition, and if desired, this alarm may be masked. (Outdoor Unit) This menu sub-branch permits the user to configure externally connected Low-noise Block Down Converter (LNB) and/or Block 5.4.9...

  • Page 76: Config: Remote

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.1 CONFIG: Remote Remote Control Entry: Local Serial Ethernet (◄ ►,ENT) Select Local, Serial, or Ethernet using the arrow keys, then press ◄ ► ENTER 5.4.1.1 CONFIG: Remote...

  • Page 77: Snmp Communities

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM possible. Press ENTER when done. Note that the asynchronous character format is FIXED at 8-N-1: 8 data bits, 1 stop bit, no parity.) 5.4.1.3 CONFIG: Remote Ethernet Ethernet Config: (◄...

  • Page 78: Config: Remote Ethernet

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM CONFIG: Remote Ethernet SNMP Communities Write Write Community: (◄ ► ▲ ▼,ENT) private Edit either the SNMP Read or Write Community string by first selecting the character to be edited using the...

  • Page 79: Config: Tx (Transmit)

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.2 CONFIG: Tx (Transmit) Tx: FEC Mod Code Data Freq On/Off Pwr Scram Clk Inv Txα α Select FEC, Mod, Code, Data, Freq, On/Off, Pwr, Scram, Clk, Inv, or Tx using the ◄...

  • Page 80: Config: Tx Fec

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.2.1 CONFIG: Tx Tx FEC: Vit Vit+RS TCM+RS (◄ ►,ENT) For the Transmit FEC type, select Vit, Vit+RS, TCM+RS, or TPC using the arrow keys, ◄ ►...

  • Page 81: Config: Tx Code

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.2.3 CONFIG: Tx Code Tx Code Rate: 5/16 21/44 1/2 2/3 3/4 7/8 17/18 (◄ ►) For the Transmit Code Rate, select 5/16, 21/44, 1/2, 2/3, 3/4, 7/8, or 17/18 using the arrow ◄...
  • Page 82 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM Note the following: FEC Type Modulation Code Rate Data Rate Range EDMAC limited? BPSK Rate 1/2 32 kbps to 5 Mbps Yes – see Rate 1/2 32 kbps to 10 Mbps...
  • Page 83 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.2.6 CONFIG: Tx On/Off Tx Output State: RxTxInhibit Common (◄ ►,ENT) For the Transmit On./Off Control (Output State), select On, Off, RxTxInhibit, or Common using the arrow keys, then press...

  • Page 84: Config: Tx Pwr

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM Press either to return to the previous menu (with Manual selected). ENTER CLEAR With Framed Mode properly configured, selecting AUPC results in display of the following submenu:...

  • Page 85: Config: Tx Scram

    . Note the following: ENTER (Internal) Indicates that the CDM-QX will supply a clock to the DTE, which is derived from its internal high-stability source. (External ) Indicates that the CDM-QX expects to receive a clock from the DTE, to which the unit can phase-lock its internal circuits.

  • Page 86: Config: Tx Inv

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.2.10 CONFIG: Tx Tx Inversion functions: Spectrum Data Clock (◄ ►,ENT) To set the Transmit Inversion Functions, select Spectrum, Data, or Clock using the ◄ ► arrow...

  • Page 87: Config: Rx (Receive)

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.3 CONFIG: Rx (Receive) Rx: FEC Demod Code Data Freq Acq Descram Buf Inv Misc CnC Select FEC, Demod, Code, Data, Freq, Acq, Descram, Buf, Inv, Misc, or CnC using the ◄ ►...

  • Page 88: Config: Rx Fec

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.3.1 CONFIG: Rx Rx FEC: Vit Vit+RS TCM+RS (◄ ►,ENT) For the Transmit FEC type, select Vit, Vit+RS, TCM+RS, or TPC using the arrow keys, ◄ ►...

  • Page 89: Config: Rx Code

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.3.3 CONFIG: Rx Code Rx Code Rate: 5/16 21/44 1/2 2/3 3/4 7/8 17/18 (◄ ►) For the Receive Code Rate, select 5/16, 21/44, 1/2, 2/3, 3/4, 7/8, or 17/18 using the arrow ◄...
  • Page 90 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM Note the following: FEC Type Modulation Code Rate Data Rate Range EDMAC limited? BPSK Rate 1/2 32 kbps to 5 Mbps Yes – see Rate 1/2 32 kbps to 10 Mbps...
  • Page 91 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.3.6 CONFIG: Rx Demod Acquisition Range: +/- 32 kHz (▲ ▼ ENT) For the Receive Demodualtion Acquisition Range, the value entered here determines the amount of frequency uncertainty the demodulator will search over in order to find and lock to an incoming carrier.
  • Page 92 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.3.8 CONFIG: Rx Rx Buffer: Internal Rx-Sat Tx-Terr Ins External (◄ ►,ENT) To set the Receive Buffer Clock Source, select Internal, Rx-Sat, Tx-Terr, Ins, or External using the ◄ ► arrow keys. Press when done.

  • Page 93: Config: Rx Inv

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.3.9 CONFIG: Rx Rx Inversion functions: Spectrum Data Clock (◄ ►,ENT) To set the Transmit Inversion Functions, select Spectrum, Data, or Clock using the ◄ ► arrow...

  • Page 94: Cnc (Carrier-In-Carrier ® )

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM ® 5.4.3.11 CONFIG: Rx CnC (CARRIER-IN-CARRIER Carrier-in-Carrier (CnC): Mode FrqOffs SrchDelay ReAcq Select Mode, FrqOffs, SrchDelay, or ReAcq using the ◄ ► arrow keys, then press ENTER The user will then be taken to a further submenu.

  • Page 95: Config: Group Modem

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM CONFIG: Rx SrchDelay CnC Min/Max Delay (ms): Min=000 Max=290 (◄ ►,▲ ▼,ENT) To edit the CnC Min/Max Search Delay (in milliseconds), first select the digit to be edited using the ◄...
  • Page 96 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM CONFIG: Group Redundancy Config Config Redundancy None 1:3 (◄ ►,ENT) Select None, 1:1, 1:2, or 1:3 using the ◄ ► arrow keys, then press ENTER CONFIG: Group...
  • Page 97 EDMAC-2 compatible with the modems listed above. This Comtech EF Data proprietary framing permits the bidirectional passing of M&C and AUPC data between local and distant-end units. Note that, if framing is enabled (either EDMAC or EDMAC-2), AUPC is automatically enabled, but the specific EDMAC feature (passing M&C data from a local to a distant-end unit) needs to enabled here.

  • Page 98: Config: Frame

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM CONFIG: Frame EDMAC, EDMAC-2 AUPC+EDMAC Master Distant-end Base Address 0240 (◄ ►,▲ ▼,ENT) To edit the address of the distant-end modem to which this unit will pass messages, first select the digit to be edited using the ◄...

  • Page 99: Config: Interface

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.6 CONFIG: Interface Interface: RS422 V.35 RS232 HSSI ASI G.703 QDI NONE The data interface for each module (modulator or demodulator) is auto-detected. If grouped as a modem, the operating data interface will be the one installed in the demod module –...

  • Page 100: Config: Interface G.703

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.6.3 CONFIG: Interface G.703 G.703 Type: T1 E1-Balanced E1-Unbal E2-Unbal (◄ ►,ENT) Select T1, E1-Balanced, E1-Unbal , or E2-Unbal using the ◄ ► arrow keys, then press...
  • Page 101 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.6.4 CONFIG: Interface QDI Tributary Ports (◄ ►,ENT) Select 1, 2, 3, or 4 using the ◄ ► arrow keys, then press ENTER CONFIG: Interface 1, 2, 3, or 4...

  • Page 102: Config: Interface Qdi

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM When displays, as per this example, this means that there are more channels available beyond Channel 6. Use right arrow key to view more, making sure that ENTER pressed once the selection is made.

  • Page 103: Config: Mask

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.8 CONFIG: Mask Alarm Mask: Transmit Receive Reference BUC LNB (◄ ►,ENT) Select Transmit, Receive, Reference – and when applicable with an appropriately-equipped CDM-QxL L-Band unit – BUC or LNB the using the ◄ ► arrow keys, then press ENTER 5.4.8.1...

  • Page 104: Config: Mask Reference

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.4.8.3 CONFIG: Mask Reference Reference Alarm: Active Masked (◄ ► ENT) Select Active or Masked using the ◄ ► arrow keys, then press . If Active is selected, then...

  • Page 105: Config: Odu

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM Note the following: If an FSK-capable BUC is employed, provides access to a further set of menus that M&C-FSK define the FSK setup, and use it for M&C (Monitor & Control).

  • Page 106: Config: Odu Buc

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM CONFIG: ODU 10MHz BUC 10MHz Reference: (◄ ►,ENT) Select the BUC 10MHz frequency reference as either On or Off using the ◄ ► arrow keys, then press...

  • Page 107: Config: Odu Lnb

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM CONFIG: ODU BUC Frequency Mix: High-Side Low-Side (◄ ►,ENT) To define the sense of the frequency translation, select High-Side or Low-Side using the ◄ ► arrow keys, then press ENTER.

  • Page 108: Lnb Lo Frequency

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM CONFIG: ODU Alarm Upper LNB Current Alarm Upper: Limit:1200mA (◄ ► ▲ ▼ ENT) To edit the LNB Current Alarm Upper limit, first select the digit to be edited using the ◄...

  • Page 109: Main Menu:) Monitor

    A comprehensive list of faults is shown at the end of this section. Live Alarms: Transmit Receive Unit ODU (◄ ►,ENT) Select Transmit, Receive, Unit – and when applicable with an appropriately-equipped CDM-Qx 70/140 MHz unit – ODU, using the arrow keys, then press ENTER 5.5.1.1...

  • Page 110: Odu

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.5.1.4 MONITOR: Alarms This feature is operable only for CDM-QxL L-Band units. IMPORTANT ODU Alarms: None (ENT) This read-only screen indicates if there are any ODU Alarms. If not, it displays ‘None’. Press to return to the previous menu.

  • Page 111: Monitor: Event-Log View

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.5.3.1 MONITOR: Event-Log View Log 023: 30/11/08 10:37:32 Fault - Demod Lock(3) (▲ ▼,ENT) In this example, the demodulator installed in Slot#3 is faulted on Nov. 30, 2008 at 10:37:32 with log number 23.

  • Page 112: Monitor: Stats

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.5.4 MONITOR: Stats Link Statistics: View Clear-All Config (◄ ►,ENT) Select View, Clear-All, or Config using the ◄ ► arrow keys, then press ENTER 5.5.4.1 MONITOR: Stats...

  • Page 113: Monitor: Stats Clear-All

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.5.4.2 MONITOR: Stats Clear-All Clear All Stored Stats? (◄ ►,ENT) When selected, and in Local mode, the user is prompted to answer No to retain the stored link statistics, or Yes to clear the buffer of all stored link statistics.

  • Page 114: Monitor: Cnc

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM ® 5.5.6 MONITOR: CnC (Carrier-in-Carrier This read-only screen is operable only for a modulator/demodulator pair grouped as a ‘modem’. IMPORTANT When MONITOR: CnC is selected, the appearance of the CnC screen depends on whether CnC is...

  • Page 115: Monitor: Odu

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.5.7 MONITOR: ODU These read-only screens are operable only for CDM-QxL L-Band units. IMPORTANT Outdoor Unit Monitor: BUC LNB (◄ ►,ENT) Select BUC or LNB, using the ◄ ► arrow keys, then press ENTER 5.5.7.1...

  • Page 116: Main Menu:) Test

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM (MAIN MENU:) Test TEST: Mode BIST (◄ ►,ENT) Spec-Analyzer Select Mode, BIST (Built-in System Test), or Spec-Analyzer using the ◄ ► arrow keys, then press ENTER 5.6.1...

  • Page 117: Test: Bist

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM IF LOOPBACK I/O LOOPBACK Figure 5-3. Loopback 5.6.2 TEST: BIST BIST: BERT-Config BERT-Mon BERT-Control (◄ ►,ENT) Select BERT-Config, BERT-Mon, or BERT-Control using the ◄ ► arrow keys, then press ENTER 5.6.2.1...

  • Page 118: Test: Spec-Analyzer

    To control the engine of the spectrum analyzer, select Off or On using the ◄ ► arrow keys, then press . When the Spectrum Analyzer Mode is On, the user can view the spectrum ENTER via Comtech EF Data’s Windows-based application software or the CDM-Qx/QxL embedded Web browser. TEST: Spec-Analyzer Config...

  • Page 119: Main Menu:) Info (Information)

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM TEST: Spec-Analyzer CenterFreq Spectrum Analyzer: (◄ ►,▲▼,ENT) Center Freq = 0070.0000 MHz The Center Frequency is similar to Rx Frequency in a regular demodulation function with a resolution of 100 Hz.

  • Page 120: Info: Tx

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.7.2 INFO: Tx Tx: 1140.000 05000.000 TUR 8P 17/18 S EXT -20.0 ON N ▲ ▼ This screen provides Transmit Configuation Information. Per this example, note the following: •...

  • Page 121: Info: Rx

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.7.3 INFO: Rx Rx: 1140.000 05000.000 8P 17/18 D RX BUF +/-32k N ▲▼ This screen provides Receive Configuation Information. Per this example, note the following: •...

  • Page 122: Info: Frame

    5.7.8 INFO: Ref Frequency Reference: Internal 10 MHz (ENT) This screen displays the source of the frequency reference for the CDM-Qx/QxL, as per the example shown. 5.7.9 INFO: ID Circuit ID: (ENT)

  • Page 123: Main Menu:) Save/Load

    SAVE/LOAD Configuration: Save Load (◄ ► ENT) The CDM-Qx/QxL permit the user to store or load up to 10 different modem configurations in its non-volatile memory. Select Save or Load using the ◄ ► arrow keys, then press ENTER 5.8.1...

  • Page 124: Main Menu:) Utility

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM Load Config from Location 9 Empty (▲ ▼ ENT) Locations 1 through 10 are available. Using the arrow keys, select the location from which to load a configuration, then press ENTER. If the selected location contains valid data, the...

  • Page 125: Utility: Ref

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM 5.9.3 UTILITY: Ref Internal Freq Ref: Adjust Warm-up delay (▲▼,ENT) For fine adjustment of the Internal 10 MHz reference oscillator, use the arrow keys to edit the value, then press The range of accepted values is from –2048 to +2047.

  • Page 126: Utility: Firmware

    CUSTOMER SERVICE TECHNICIAN. IMPORTANT This series of submenus permits the user to view information about the CDM-Qx/QxL internal firmware. The modem can store two complete firmware images, and the user can select which image will be loaded the next time the unit reboots.

  • Page 127: Utility: Firmware Select

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM UTILITY: Firmware Information Image#1, Image#2 Image#x: Bulk Firmware (▲ ▼) FW/00107E 05/20/09 2.1.5 For either Image#1 or Image#2: Use the arrow keys to browse through each read-only screen for each component of the firmware image.

  • Page 128: Utility: Fast

    FAST (Fully Accessible System Topology) is used to enable new options in the CDM-Qx/QxL. Contact Comtech EF Data to obtain the FAST code for the desired option. For a step-by-step tutorial on this complete upgrade process, refer to Appendix B. FAST ACTIVATION PROCEDURE.
  • Page 129 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM When Demo Mode is turned On, the following messages display: Please Wait… Resetting Factory Defaults PROCESSOR BOOTING…PLEASE WAIT! When the allotted demo period expires, the following message displays:...
  • Page 130 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Front Panel Operation MN/CDMQX.IOM UTILITY: FAST Slot# Mod, Demod Config FAST Configuration: Edit Code Demo Mode ◄ ► Select Edit Code or Demo Mode using the arrow keys, then press ENTER...

  • Page 131: Chapter 6. Ethernet Management

    MANAGEMENT Introduction The CDM-Qx/QxL base chassis is equipped for monitor and control purposes with an RJ-45 10/100 BaseT Ethernet management interface. 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 132: 6.3.1 Management Information Base (Mib) Files

    The following MIB files are associated with the CDM-Qx/QxL: MIB File/Name Description FW10874-2-.mib ComtechEFData MIB file gives the root tree for ALL Comtech EF Data products and consists of only the following OID: ComtechEFData Root MIB file Name: comtechEFData Type: MODULE-IDENTITY OID: 1.3.6.1.4.1.6247...
  • Page 133 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM The modem supports both SNMPv1 traps and SNMPv2 notifications. Which style of traps the modem sends can be configured by the user via the cdmQxSNMPTrapVersion OID. The following are the MIB2 v1traps/v2 notifications that the modem supports:...

  • Page 134: Telnet Interface

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM Telnet Interface The modem provides a Telnet interface for the purpose of Equipment M&C via the standard equipment Remote Control protocol. The Telnet interface Requires user login at the Administrator level and Read/Write level.
  • Page 135 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM response (for example, FRW? response) will be displayed as one line, with the latter lines overwriting the previous lines. In order to view the full response messages, CEFD recommends using HyperTerminal configured as Telnet Client.

  • Page 136: 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 CDM-Qx/QxL. These Web pages have been designed for optimal performance when using Microsoft’s Internet Explorer Version 5.5 or higher (the examples shown use Internet Explorer Version 6.0).

  • Page 137: 6.5.3 User Login

    Type the User Name and Password, then click [OK]. Once the valid User Name and Password is accepted, the user will see the CDM-Qx/QxL Multi- Channel Satellite Modem Web Server Interface “splash” page (right). From this top level menu, depending on the unit in use the user has access to four or five navigation tabs: •...

  • Page 138: Web Server

    Home Page 6.5.4.1.1 Home | Home Page Figure 6-1. CDM-Qx/QxL Multi-Channel Satellite Modem Home page From any location within the Web Server Interface, the user can select the Home tab and/or hyperlink to return back to this top-level page. 6–8...

  • Page 139: Home | Contact Page

    Ethernet Management MN/CDMQX.IOM 6.5.4.1.2 Home | Contact Page Figure 6-2. Home | Contact Information page The ‘Contact’ page (Figure 6-2) provides basic contact information to reach Comtech EF Data Sales and Customer Support via phone or automated e-mail links. 6–9...

  • Page 140: Home | Support Page

    Home | Support Page Figure 6-3. Home | Customer Support page The CDM-Qx/QxL ‘Support’ page (Figure 6-3) allows the user to compose an e-mail message for questions or problems with the modem. The Problem Report area of the display allows up to 256 characters maximum.

  • Page 141: Admin

    Figure 6-4. Admin | Access page The ‘Admin | Access’ page (Figure 6-4) provides the means to set up user names, passwords, the e-mail server, and the host IP addresses to facilitate communication with the CDM-Qx/QxL Web Server. Network Maintenance •...
  • Page 142 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM Note the following: o These Name fields can be any alphanumeric combination with a maximum length of 10 characters. o These Password fields can be any alphanumeric combination with a maximum length of 10 characters.

  • Page 143: Admin | Remote Page

    Figure 6-5. Admin | Remote page The ‘Admin | Remote’ page (Figure 6-5) sets and returns administration information for the CDM-Qx/QxL Simple Network Management Protocol (SNMP) feature. For complete details pertaining to the configuration parameters available on this page, refer to Chapter 5. FRONT PANEL OPERATION and Sect.

  • Page 144: Config Mdm (Configure Modem) Pages

    The ‘Config | Quick View’ page (Figure 6-6) is the ‘gateway’ page for operation of the complete CDM-Qx/QxL configuration. Once the Quick View hyperlink is selected, the page will refresh and the Configuration Icon Group, located at the left side of the page, will display the...

  • Page 145: Figure 6-7. Configuration Icon Group Examples

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM If no module is installed, the space assigned to that slot will not be visible. For example, the Configuration Icon Group shown in Figure 6-6 depicts a modulator pair (a Tx module installed in Slot#1 and an Rx module installed in Slot#2) grouped as a modem;...

  • Page 146: Config Mdm | Quick View | Config

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM 6.5.4.3.1.1 Config Mdm | Quick View | Config Pages Depending on the configuration icon selected, the nested Config page provides the user with access to an assortment of base unit, modulator, and demodulator configuration parameters. For detailed information on these features, refer to the pertinent subsections of Sect.

  • Page 147: Figure 6-9. 'Config Mdm | Quick View | Config' Nested Pages – Rx, Md

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM Config Page – ‘Rx’ selected Config Page – ‘MD’ selected Figure 6-9. ‘Config Mdm | Quick View | Config’ Nested Pages – Rx, MD 6–17...
  • Page 148 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM Modem Group (Available only on the Base nested Config page) – To create a modem group from the available installed modulator and demodulator modules, click on Group 1 or Group 2, then click [Set Group].
  • Page 149 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM Modulator Parameters (Available on the Tx and MD nested Config pages) – Click [Submit] once all the parameters have been set in this section. Demodulator Parameters (Available on the Rx and MD nested Config pages) – Click [Submit] once all the parameters have been set in this section.

  • Page 150: Config Mdm | Quick View | Status

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM 6.5.4.3.1.2 Config Mdm | Quick View | Status Pages Depending on the configuration icon selected, the nested Status page provides the user with access to several read-only monitoring windows (events, internal redundancy, and statistics), and alarm controls that determine how fault information is filtered for unit operation and/or user review.

  • Page 151: Figure 6-11. 'Config Mdm | Quick View | Status' Nested Pages – Rx, Md

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM Status Page – ‘Rx’ Selected Status Page – ‘MD’ selected Figure 6-11. ‘Config Mdm | Quick View | Status’ Nested Pages – Rx, MD 6–21...
  • Page 152 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM Events Log (Available only on the Base nested Status page) – This scrollable read-only window provides a visual record of stored events: • Read Next Five Events: Click to buffer the next group of five stored events into the events window.
  • Page 153 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM Statistics Log (Available only on the MD nested Status page) – This scrollable read-only window provides a visual record of operating statistics: • Read Next Five Statistics: Click to buffer the next group of five stored events into the statistics window.

  • Page 154: Config Mdm | Quick View | Test

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM 6.5.4.3.1.3 Config Mdm | Quick View | Test Pages Depending on the configuration icon selected, the nested Test page provides the user with access to demodulator module constellation displays and the Spectrum Analyzer feature, and an assortment of modem test functions.

  • Page 155: Figure 6-13. 'Config Mdm | Quick View | Test' Nested Pages – Rx, Md

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM Test Page – ‘Rx’ Selected (Independent Tx/Rx Configuration) Test Page – ‘MD’ Selected (Grouped Modem Configuration) Figure 6-13. ‘Config Mdm | Quick View | Test’ Nested Pages – Rx, MD...
  • Page 156 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM With Base selected, the nested Test page allows the user to simultaneously view the constellations of all installed demodulators. The top image in Figure 6-12 shows such operation, where Base Test displays the constellations for this particular configuration’s four installed...

  • Page 157: Figure 6-14. Nested Test Page With Spectrum Analyzer Mode 'On' – Rx, Md

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM Spectrum Analyzer Knobs (Available on the Rx and MD nested Test pages) – Note the following: • Mode – Use the drop-down menu to select the Spectrum Analyzer as On or Off. When the Spectrum Analyzer feature is turned ON, the selected demodulator will not be allowed to receive traffic, and the built-in BERT monitoring is ignored.

  • Page 158: Config Mdm | Quick View | Utility

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM 6.5.4.3.1.4 Config Mdm | Quick View | Utility Pages Depending on the configuration icon selected, the nested Utility page provides the user with access to an assortment of modem operating settings. For detailed information on these features, refer to Sect.

  • Page 159: Figure 6-16. 'Config Mdm | Quick View | Utility' Nested Pages – Rx, Md

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM Utility Page – ‘Rx’ Selected Utility Page – ‘MD’ Selected Figure 6-16. ‘Config Mdm | Quick View | Utility’ Nested Pages – Rx, MD 6–29...
  • Page 160 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM Real-Time Clock (Available only on the Base nested Utility page) – To set the date and time of the unit: • The user may enter a date using international format in the form DD/MM/YY (where DD = day [01 to 31], MM = month [01 to 12], and YY = year [00 to 99]).
  • Page 161 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM • To Load a Modem Configuration: Use the Load Location drop-down menu to select a storage location from 0 to 9 (the default is Don’t Load), then click [Save/Load] to load the saved configuration from the unit’s non-volatile memory.
  • Page 162 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM • Using the drop-down menus… o Tx Pwr Max Increase – Select a value (in dB) from 0 to 9. o Max Pwr Reached Action – Select No Action or Generate Tx Alarm.

  • Page 163: Config Mdm | Unit Status Page

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM 6.5.4.3.2 Config Mdm | Unit Status Page Figure 6-17. Config Mdm | Unit Status Page The ‘Config Mdm | Unit Status’ page (Figure 6-17) provides the user with read-only status window pertaining to: •...

  • Page 164: Odu (Outdoor Unit) Pages (Cdm-Qxl Only)

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM 6.5.4.4 ODU (Outdoor Unit) Pages (CDM-QxL only) The ‘ODU’ (Outdoor Unit) tab is used to access the BUC and LNB pages, which in turn are used to control and monitor either a Block Up Converter (BUC) or Low-Noise Block Down Converter (LNB) that is connected via FSK to the CDM-QxL.

  • Page 165: Config | Lnb (Low Noise Block Down Converter) Page

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM 6.5.4.4.2 Config | LNB (Low Noise Block Down Converter) Page Figure 6-19. ODU | LNB page The ‘ODU | LNB’ page (Figure 6-19) is used to configure Low Noise Block Down Converter parameters, and display the LNB status for L-Band operation.

  • Page 166: Maint (Maintenance) Page

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Ethernet Management MN/CDMQX.IOM 6.5.4.5 Maint (Maintenance) Page Figure 6-20. Maint | Unit Info page The ‘Maint| Unit Info’ page (Figure 6-20) provides the user with a scrollable read-only status window that identifies the configured unit’s installed firmware numbers and versions. For more information, see Sect.

  • Page 167: Viterbi

    Turbo Product Coding represents a very significant development in the area of FEC and, optionally, the CDM-Qx/QxL may be fitted with Turbo Product Codec in the form of a plug-in daughter card (SIMM module) that is field upgradeable. The codec provides data rate capability up to 20 Mbps, and code rates of: •...

  • Page 168: Table 6-1. Viterbi Decoding Summary

    Reed-Solomon decoder do not exceed its capacity to correct those errors. In the case of the CDM-Qx/QxL, different Reed- Solomon code rates are used, according to the mode of operation.

  • Page 169: Table 6-2. Concatenated Reed-Solomon Coding Summary

    This may be due to the carrier-recovery circuits, or the synchronization threshold of the primary FEC device, or both. In the CDM-Qx/QxL, and Rate 1/2 operation, this threshold is around 4 dB E .

  • Page 170: Turbo Product Codec (Hardware Option)

    Turbo Codes have been developed: Turbo Convolutional Codes (TCC) and Turbo Product Codes (TPC, a block coding technique). Comtech EF Data has chosen to implement an FEC codec based on TPC. A Turbo Product Code is a 2- or 3-dimensional array of block codes. Encoding is relatively straightforward, but decoding is a very complex process requiring multiple iterations of processing for maximum performance to be achieved.

  • Page 171: The Evolution Of Tpc In Comtech Products

    7.5.2 The Evolution of TPC in Comtech Products When Comtech EF Data first introduced the Turbo Coding option in 1999, only Rate 3/4 QPSK was offered. Further work permitted the addition of Offset QPSK operation. Two further code rates - Rate 21/44 BPSK (very close to Rate 1/2) and Rate 5/16 BPSK (very close to Rate 1/3) were then made available.

  • Page 172: Comparison Of All Tpc Modes

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Forward Error Correction Options MN/CDMQX.IOM Table 6-5. Turbo Product Coding processing delay comparison FEC Mode (64 kbps data rate) End-to-end delay, ms Viterbi, Rate 1/2 Viterbi Rate 1/2 + Reed-Solomon Turbo Product Coding, Rate 3/4...

  • Page 173: Table 6-6. Turbo Product Coding Summary

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Forward Error Correction Options MN/CDMQX.IOM The occupied bandwidth is defined at the width of the transmitted spectrum taken at the -10 dB points on the plot of power spectral density. This equates to 1.19 x symbol rate for the modem transmit filtering.

  • Page 174: Figure 6-1. Viterbi Decoding

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Forward Error Correction Options MN/CDMQX.IOM Eb/No in dB 1E-1 Uncoded BPSK/QPSK Viterbi Decoding 1E-2 Typical Performance 1E-3 1E-4 1E-5 1E-6 Specification limit, Rate 7/8 1E-7 Coding 1E-8 Specification Specification limit Rate 1/2...

  • Page 175: Figure 6-2. Viterbi With Concatenated R-S Outer Code

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Forward Error Correction Options MN/CDMQX.IOM Eb/No in dB 1E-1 Viterbi with Uncoded BPSK/QPSK concatenated RS 220,200 1E-2 Outer Code Sync threshold, Rate 3/4 1E-3 Sync threshold, Rate 7/8 1E-4 Combined sync...

  • Page 176: Figure 6-3. 8-Psk/Tcm Rate 2/3 With And Without Concatenated R-S Outer Code

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Forward Error Correction Options MN/CDMQX.IOM Eb/No in dB 1E-1 8-PSK/TCM Rate 2/3 Uncoded BPSK/QPSK Decoding, with and without 219, 201 RS 1E-2 Outer Code Performance with CDM-Qx 1E-3 1E-4 Typical Performance...

  • Page 177: Figure 6-4. Comtech Ef Data Turbo Product Codec Rate 3/4 Qpsk, 8-Psk And 16-Qam

    8-PSK 8-PSK 1E-4 Spec limit Spec limit Rate 3/4 Rate 3/4 QPSK/OQPSK QPSK 1E-5 1E-6 1E-7 Spec limit Rate 3/4 16-QAM 1E-8 Typical performance 1E-9 Figure 6-4. Comtech EF Data Turbo Product Codec Rate 3/4 QPSK, 8-PSK and 16-QAM 7–11...

  • Page 178: Figure 6-5. Comtech Ef Data Turbo Product Codec Rate 7/8 Qpsk, 8-Psk And 16-Qam

    Spec limit Spec limit 8-PSK Rate 7/8 Rate 7/8 Uncoded QPSK QPSK/OQPSK 8-PSK 1E-4 1E-5 1E-6 1E-7 Spec limit Rate 7/8 16-QAM 1E-8 Typical performance 1E-9 Figure 6-5. Comtech EF Data Turbo Product Codec Rate 7/8 QPSK, 8-PSK and 16-QAM 7–12...

  • Page 179: Figure 6-6. Rate 1/2 Qpsk, Rate 17/18 Qpsk And Rate 17/18 8-Psk

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Forward Error Correction Options MN/CDMQX.IOM Eb/No in dB 1E-1 Comtech Turbo Product Codec Rate 1/2 QPSK Uncoded Rate 17/18 QPSK BPSK/QPSK 1E-2 and 8-PSK Performance with CDM-Qx Uncoded 8-PSK 1E-3 1E-4...

  • Page 180: Figure 6-7. Rate 21/44 Bpsk And Rate 5/16 Bpsk Turbo

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Forward Error Correction Options MN/CDMQX.IOM Eb/No in dB 1E-1 Comtech Turbo Product Codec Rate 21/44 BPSK Rate 5/16 BPSK 1E-2 Spec limit Rate 5/16 BPSK 1E-3 Spec limit Rate 21/44 BPSK...

  • Page 181: Figure 6-8. 16-Qam Viterbi, Rate 3/4 And Rate 7/8 With 220,200 R-S Outer Code

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Forward Error Correction Options MN/CDMQX.IOM Eb/No in dB 1E-1 16-QAM Viterbi, Rate 3/4 and Rate 7/8 with 220,200 RS Outer Code Uncoded BPSK/QPSK 1E-2 Uncoded 16-QAM 1E-3 1E-4 Specification limit Rate 7/8...
  • Page 182 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Forward Error Correction Options MN/CDMQX.IOM Notes: 7–16...

  • Page 183: Chapter 8. Automatic Uplink Power Control (Aupc)

    Chapter 8. AUTOMATIC UPLINK POWER CONTROL (AUPC) Introduction The user MUST obtain permission from the Satellite Operator to use this feature. WARNING Improper use of this feature could result in a transmitting terminal seriously exceeding its allocated flux density on the Operator’s satellite. This could produce interference to other carriers, and could cause transponder saturation problems.

  • Page 184: Aupc Target E

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Automatic Uplink Power Control (AUPC) MN/CDMQX.IOM 4. The user will then select AUPC as the operating mode. At this point the user will be prompted to define four key parameters: AUPC Target E AUPC Max Range;...

  • Page 185: Compensation Rate

    AUPC is disabled, this will indicate 0.0 dB. This value is also available via the remote control interface. Comtech EF Data strongly cautions against the use of large values of permitted power level increase under AUPC control. Users should consider using the absolute minimum range necessary to improve rain-fade margin.

  • Page 186: Cdm-Qx/Qxl Multi-Channel Satellite Modem With Doubletalk™ Carrier-In-Carrier® Revision

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Automatic Uplink Power Control (AUPC) MN/CDMQX.IOM Notes: 8–4...

  • Page 187: Chapter 9. Doubletalk Carrier-In-Carrier (Cnc)

    Applied Signal Technology, Inc. that allows both the forward and reverse carriers of a full duplex link to share the same segment of transponder bandwidth, using adaptive cancellation. Applied Signal uses the term DoubleTalk™, and Comtech EF Data refers to it as DoubleTalk Carrier-in-Carrier (CnC).

  • Page 188: Figure 9-1. Traditional Fdma System (Without Cnc)

    Figure 9-1 illustrates a conventional FDMA system, where two carriers are placed in non- overlapping channels. Figure 9-2 shows the same link using the CDM-Qx/QxL equipped with the DoubleTalk Carrier- in-Carrier option. Note that now only 50% of the bandwidth is being used, as now both carriers are occupying the same bandwidth.
  • Page 189 (user’s outbound), then lock to and demodulate the desired carrier. The modem is like all Comtech EF Data modems in that it has a full compliment of receive monitored parameters. But for CnC operation a new parameter has been added. To access this feature, change the menu from config Rx to monitor Rx, CnC and the following parameters will be displayed.

  • Page 190: Cnc Performance Characterization

    In satellite links, one of the impairments to estimate is the impact of carrier spacing on performance and allocate the degradation to the link budget. Data was taken using the CDM-Qx Modem, operating with Turbo coding, to measure Eb/No degradation with decreasing carrier spacing to characterize performance in the presence of two equally spaced like modulated adjacent carriers.

  • Page 191: Figure 9-3. Adjacent Carrier: Case A (As Tested) And Case B (As Plotted)

    +6dB relative to the desired carrier to produce a family of operating curves. through Figure 9-4 plot the results for the QPSK, 8-PSK and 16-QAM cases. Figure 9-6 The following table contains the CDM-Qx configurations tested: Forward Error Reference Eb/No Modulation Symbol Rate...

  • Page 192: Figure 9-4. Qpsk 3/4 Turbo Degradation Versus Relative Carrier Spacing (For Two Adjacent Carriers)

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 DoubleTalk™ Carrier-in-Carrier® (CnC) MN/CDMQX.IOM Figure 9-4. QPSK 3/4 Turbo degradation versus relative carrier spacing (for two adjacent carriers) Figure 9-5. 8-PSK 3/4 Turbo degradation versus relative carrier spacing (for two adjacent carriers) Figure 9-6.

  • Page 193: Figure 9-7. Adjacent Carrier Cases

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 DoubleTalk™ Carrier-in-Carrier® (CnC) MN/CDMQX.IOM 9.4.2 Selecting The Adjacent Carrier Curve The information presented earlier characterizes the case for one or two adjacent carriers relative to the desired carrier. The desired and adjacent carriers may also be CnC carriers occupying the adjacent slots.

  • Page 194: Figure 9-8. Cnc Ratio

    (in dB): CnC Ratio = Interferer Power – Desired Carrier During CnC operation, the interfering carrier is removed by the CDM-Qx using a stored version of the transmitted carrier to adaptively cancel it from the composite received signal. The desired carrier remaining after the cancellation process is delivered to the demodulator and decoder to recover the data.

  • Page 195: Figure 9-9. Cnc Ratio For Qpsk And 8-Psk

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 DoubleTalk™ Carrier-in-Carrier® (CnC) MN/CDMQX.IOM Figure 9-9. CnC Ratio For QPSK and 8-PSK Figure 9-10. CnC Ratio For 16-QAM Figure 9-9 plots the impact of CnC ratio on QPSK and 8-PSK constellations, while Figure 9-10 shows 16-QAM.

  • Page 196: Figure 9-11. Cnc Example

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 DoubleTalk™ Carrier-in-Carrier® (CnC) MN/CDMQX.IOM 9.4.5 CnC Carrier Offset CnC carriers are normally placed directly on top of each other with the same center frequency for both carriers. Normal operation is obtained when the center frequency of the two carriers is within ±...

  • Page 197: Table 9-1. Rain Fade Degradation

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 DoubleTalk™ Carrier-in-Carrier® (CnC) MN/CDMQX.IOM Table 9-1. Rain Fade Degradation Site ‘A’ Site ‘B’ Parameter Comment Parameter Comment Relative Level of Carrier ‘A’ Relative Level of Carrier ‘B’ Due to fade at Due to fade at Site ‘A’...

  • Page 198: Nd Cnc Example: Cnc Ratio With Asymmetric Links

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 DoubleTalk™ Carrier-in-Carrier® (CnC) MN/CDMQX.IOM In links without rain fade, the CnC ratio is constant and only the asymmetry of link due to satellite footprint, different antenna sizes, different symbol rates, or modulation and code rates alter the ratio.

  • Page 199: Rd Cnc Example: Asymmetric Link With Rain Fade

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 DoubleTalk™ Carrier-in-Carrier® (CnC) MN/CDMQX.IOM the installation is a new one, a larger, though more expensive, antenna is possible at the remote site. This simultaneously decreases the CnC ratio at the hub while increasing it at the remote site.

  • Page 200: Table 9-3. Eb/No Degradation For Asymmetric 4.5-Meter Antenna At Site 'A' And 2.4-Meter Antenna At Site 'B

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 DoubleTalk™ Carrier-in-Carrier® (CnC) MN/CDMQX.IOM • The CnC ratio for the site with the smaller antenna (Site ‘B’) is the same magnitude but opposite sign: CnC(Site ‘B’) = -CnC(Site ‘A’). For rain fade: •...

  • Page 201: Chapter 10. Edmac Channel

    Chapter 10. EDMAC CHANNEL 10.1 Theory Of Operation EDMAC, an acronym for Embedded Distant-end Monitor And Control, is a feature that permits the user to access the M&C features of modems which are at the distant-end of a satellite link. This is accomplished by adding extra information to the user’s data, but in a manner that is completely transparent to the user.

  • Page 202: 10.2 M&C Connection

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 EDMAC Channel MN/CDMQX.IOM degradation. The net effect is that the user will see effectively identical BER performance whether framing is used or not. On the receive side: When the demodulator locks to the incoming carrier, it must go through the additional step of searching for, and locking to, the synchronization word.

  • Page 203: 10.3 Setup Summary

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 EDMAC Channel MN/CDMQX.IOM 10.3 Setup Summary To access a distant-end unit: • Designate a Master/Slave pair: Master at the local-end, Slave at the distant-end. • On the local-end unit, enable framing, and EDMAC, define the unit as MASTER, then enter the bus address.
  • Page 204 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 EDMAC Channel MN/CDMQX.IOM Notes: 10–4...

  • Page 205: Chapter 11. Redundancy

    IF I/O Slot 2 Slot 4 Figure 11-1. CDM-Qx/QxL Chassis Rear Panel Schematic Location of the modules in the chassis is critical for correct operation of the redundancy functions. Using the Figure 11-1 schematic for reference, note the following: •...
  • Page 206 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Redundancy MN/CDMQX.IOM Notes: 11–2...

  • Page 207: Appendix A. Cable Drawings

    Appendix A. CABLE DRAWINGS A.1 Introduction The EIA-530 standard pinout provided on the CDM-Qx/QxL is becoming more popular in many applications. However, there are still occasions, particularly with existing EIA-422/449 and V.35 users, when a conversion must be made. For situations where such conversions are required, refer to the following table to select the appropriate cable.

  • Page 208: A.1.1 Eia-530 To Rs-422/449 Data Cable

    Appendix A MN/CDMQX.IOM A.1.1 EIA-530 to RS-422/449 Data Cable Figure A-1 shows the cable drawing for EIA-530 to RS-422/449 DCE conversion for connections between the CDM-Qx/QxL and the User data. Figure A-1. : EIA-530 to RS-422/449 DCE Conversion Cable (CA/WR0049)

  • Page 209: A.1.2 Eia-530 To V.35 Data Cable

    Appendix A MN/CDMQX.IOM A.1.2 EIA-530 to V.35 Data Cable Figure A-2 shows the cable drawing for EIA-530 to V.35 DCE conversion for connections between the CDM-Qx/QxL and the User data. Figure A-2. : EIA-530 to V.35 DCE Conversion Cable (CA/WR0059)

  • Page 210: A.1.3 Eia-530 Conversion Cable

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix A MN/CDMQX.IOM A.1.3 EIA-530 Conversion Cable Figure A-3 shows the cable drawing for modem to EIA-530 conversion for connections between the CDM-Qx/QxL and the User data. Figure A-3. EIA-530 DCE Conversion Cable (CA/WR9718-1)

  • Page 211: A.1.4 Switch Programming Cable

    MN/CDMQX.IOM A.1.4 Switch Programming Cable Figure A-4 shows the cable required for a simple EIA-232 connection between the CDM-Qx/QxL Remote Control port and an external PC serial port. This cable is needed for Flash upgrading. Figure A-4. Switch Programming Cable...
  • Page 212 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix A MN/CDMQX.IOM Notes:...

  • Page 213: Appendix B. Fast Activation Procedure

    These techniques allow the use of a unique access code to enable configuration of the available hardware. FAST access codes can be purchased at any time from Comtech EF Data. Once obtained, the FAST code is loaded into the unit via the front panel keypad.
  • Page 214 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix B MN/CDMQX.IOM 3. Via the UTILITY: FAST submenu: Using the ◄ ► arrow keys, select Base, Slot1, Slot2, Slot3, or Slot3, then press ENTER FAST – Select the module: Base Slot1 Slot2 Slot3 Slot4 Base refers to the base unit, where the redundancy and CnC options may be upgraded;...

  • Page 215: View Currently Installed Fast Features

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix B MN/CDMQX.IOM B.2.2 View Currently Installed FAST Features To view currently installed features, proceed as instructed via the sections that follow. B.2.2.1 View Base Unit FAST Features ◄ ► Select MAIN MENU: Utility...

  • Page 216: B.2.2.2 View Installed Module (Mod/Demod, Turbo) Fast Features

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix B MN/CDMQX.IOM B.2.2.2 View Installed Module (Mod/Demod, Turbo) FAST Features Select MAIN MENU: Utility Slot# using the ◄ ► arrow keys, then press Fast ENTER FAST - Slot#2: Demod Turbo (▲...

  • Page 217: Acquire Fast Code

    20-character FAST access/configuration code. B.2.4 Enter FAST Codes From the CDM-Qx/QxL front panel, prepare to enter the access codes obtained from Comtech EF Data Customer Support: 1. Via the MAIN MENU: Using the ◄ ► arrow keys, select Utility, then press...

  • Page 218: B.2.4.2 Entering The Installed Module Fast Code

    00000000000000000000 (ENT) Enter the 20-digit FAST code that was obtained from Comtech EF Data carefully. The procedure and user prompts are identical to those outlined for the Base Unit FAST Code entry. B.2.4.3 Entering the Installed Module TPC Board FAST CODE...

  • Page 219: Appendix C. Remote Control

    This appendix describes the protocol and message command set for remote monitor and control of the CDM-Qx/QxL Modem. While the protocol presented here is based on remote commands for the CDM-570/570L Satellite Modem, it is modified to address features unique to CDM-Qx/QxL operation (e.g., to separately address the four plug-in slots).

  • Page 220: Basic Protocol

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM • Target-to-Controller pair has one line receiver (Controller), and all Targets have Tri-State drivers. EIA-232 This is a much simpler configuration in which the Controller device is connected directly to the Target via a two-wire-plus-ground connection.

  • Page 221: Start Of Packet

    RS-485 bus, it must be noted that the Qx will require four addresses, and should be spaced apart accordingly. Empty slots in the Qx chassis still occupy an address. A single CDM-Qx occupies four addresses. For modulator and demodulator grouped as modem, the address will be the same as the modulator.
  • Page 222 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM 1. From Controller-to-Target, the only permitted values are: The = code is used as the assignment operator, and is used to indicate that the parameter defined by the preceding byte should be set to the value of the (ASCII code 61 argument(s) that follow it.

  • Page 223: Optional Message Arguments

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM C.5.6 Optional Message Arguments Arguments are not required for all messages. Arguments are ASCII codes for the characters 0 to 9 (ASCII codes 48 to 57); period (ASCII code 46); and comma (ASCII code 44); plus miscellaneous printable characters.
  • Page 224 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Index Notes: Column ‘C’ = Command; Column ‘Q’ = Query: Columns marked ‘X’ designate instruction code as Command only, Query only, or Command/Query. The numeric superscript (XXX ) indicates the 6.5.X subsection where this code is explained in detail.
  • Page 225 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM C.6.1 Transmit (Tx) Commands and Queries Command Arguments Query Parameter (Instruction for Command Response to (Instruction Description of Arguments Response to Query Type Code and or Response Command...
  • Page 226 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.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)
  • Page 227 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.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)
  • Page 228 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.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)

  • Page 229: Receive (Rx) Commands And Queries

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM C.6.2 Receive (Rx) Commands and Queries Priority System = RFT (Highest Priority), RMD, RCR, RRS, and RDR (Lowest Priority), as indicated by shading. Any changes to a higher priority can override any of the parameters of lower priority.
  • Page 230 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 231 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 232 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)

  • Page 233: Common (Tx, Rx, Or Modem) Commands And Queries

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM C.6.3 Common (Tx, Rx, or Modem) Commands and Queries Priority System = ITF(Highest Priority), then FRM as indicated by shading. Any changes to a higher priority can override any of the parameters of lower priority.
  • Page 234 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 235 CST= 1 byte Command or Query. CST= Save CST? Causes the CDM-QX to store the current unit configuration (common CST* functions and all four slots) in Configuration Memory location defined CST# by the 1-byte argument (0 to 9) CST^ Example: CST=4 (store the current configuration in location 4)
  • Page 236 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 237 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 238 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 239 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 240 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 241 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier) Quad Drop &...

  • Page 242: Queries

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM C.6.4 Queries Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier)
  • Page 243 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 244 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 245 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 246 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 247 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 248 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 249 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)

  • Page 250: Bulk Commands And Queries

    Configuration numerical entries, MGC? kk.klmnoppp.ppqrstuvvvvvvvAAAA. Global Configuration of CDM-QX on a module Slot basis if not grouped as a modem or on fixed values and MGC* AAAABCDEEEEE.EEEFGHIIIJJ.JK a modem basis if grouped. If the module is a Tx and ungrouped as modem, the Rx field...

  • Page 251: Buc Commands And Queries - Cdm-Qxl Only

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 252 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 253 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)

  • Page 254: Lnb Commands And Queries - Cdm-Qxl Only

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)

  • Page 255: Built-In Bert Commands And Queries (Ber Tester

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)
  • Page 256 CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type Code and Response to Command Code and Qualifier) Query Qualifier)

  • Page 257: Spectrum Analyzer Commands And Queries - Rx Module Only

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM C.6.9 Spectrum Analyzer Commands and Queries – Rx Module ONLY Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments Response to Query Type...

  • Page 258: D&I++ (Drop & Insert) Commands And Queries (E1 Ccs Only) - Modem Only

    CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7 Appendix C MN/CDMQX.IOM C.6.10 D&I++ (Drop & Insert) Commands and Queries (E1 CCS Only) – Modem ONLY Command Arguments for Query Parameter (Instruction Command or Response to (Instruction Description of Arguments...

  • Page 259: 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 0.254 — 25.4 1.578 x 10 1 foot 30.480 12.0 —...
  • Page 260 2114 85281 WEST TH STREET TEMPE ARIZONA 480 • 333 • 2200 PHONE 480 • 333 • 2161...

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