Comtech EF Data CDM-Qx Spezifikationen

Part Number MN/CDMQX.IOM Revision 5 IMPORTANT NOTE: The information contained in this document supersedes all previously publi

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CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–46 (ConfigODUBUCM&C-FSK) - M&C FSK If M&C-FSK is selected,

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–47 (ConfigODUBUCM&C-FSKTx-On/Off) - FSK TX-ON/OFF If Tx-On/Off is

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–48 If Upper is selected, the following sub-menu is displayed: Edit the

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–49 (ConfigODUBUCLO) - BUC LO If LO is selected, the following sub-menu i

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–50 (ConfigODULNB) LNB If LNB is selected, the following sub-menu is disp

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–51 (ConfigODULNBPower-On/Off) – LNB POWER- ON/OFF If Power-On/Off is sel

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–52 If Lower is selected, the following sub-menu is displayed: Edit the

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–53 5.6.2 MONITOR Select Alarms, Rx-Params, Event-Log, Stats, AUPC, CnC or

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–54 (MonitorAlarmsReceive) – RECEIVE ALARMS The screen will indicate i

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–55 5.6.2.2 (MonitorRx-Params) – RECEIVE-PARAMETERS If the user selects Rx

CDM-Qx Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier Installation and Operation Manual Note: This manual incorporates data for

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–56 In this example, the demodulator installed in slot #3 is faulted on Nov.

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–57 5.6.2.4 (MonitorStats) – LINK STATISTICS (for grouped as modem only) If

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–58 If the measured values are greater than, or equal to 16.0 dB, the displa

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–59 5.6.2.5 (MonitorAUPC) – MONITOR AUPC(for grouped as modem only) If AUP

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–60 5.6.2.7 (MonitorODU) – MONITOR ODU (for L-Band Unit only) If ODU is sel

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–61 5.6.3 TEST: Selecting Test will display this sub-menu: Select Mode, BI

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–62 This sub-menu permits the user to select the following test modes: Nor

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–63 If BIST is selected, the display will show: The Built-In System Test

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–64 If Spec-Analyzer is selected: Selecting Mode will display: This menu a

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–65 Figure 5-4. Loopback IF LOOPBACKDIGITALLOOPBACKI/O LOOPBACK

CDM-Qx Satellite Modem Revision 5 Preface MN/CDMQx.IOM CUSTOMER SUPPORT Contact the Comtech EF Data Customer Support Department for:  Product supp

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–66 5.6.4 INFO (Information) Select Rem, Tx, Rx, Buf, Frame, Interface, Mas

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–67 5.6.4.2 (InfoTx) - TX INFORMATION The information displayed here is a

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–68 5.6.4.3 (InfoRx) – RX INFORMATION The information displayed here is a

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–69 5.6.4.4 (InfoBuffer) - BUFFER INFORMATION This displays if the buffer

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–70 5.6.4.7 (InfoMask) – ALARM MASK INFORMATION This shows, in the same fo

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–71 5.6.5.1 (Save/LoadSave) – SAVE CONFIGURATION Selecting Save will dis

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–72 5.6.5.2 (Save/LoadLoad) – LOAD CONFIGURATION Having selected Load, if

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–73 5.6.6 UTILITY Select RxBuffer, Clock, Ref, ID, Display, Firmware or F

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–74 5.6.6.3 (UtilityRef) - REFERENCE ADJUST Fine adjustment of the Intern

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–75 5.6.6.5 (UtilityDisplay) - DISPLAY BRIGHTNESS Edit the display brightn

CDM-Qx Satellite Modem Revision 5 Preface MN/CDMQx.IOM iii Table of Contents CHAPTER 1. INTRODUCTION...

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–76 If the user selects Select, the following sub-menu is displayed: The to

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–77 5.6.7 (UtilityFAST) - FAST Code Options FAST is the way to enable new

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–78 User can either select Edit Code or Demo Mode. If Edit Code is selected,

6–1 Chapter 6. FORWARD ERROR CORRECTION OPTIONS 6.1 Introduction As standard, the Modem is equipped with three Forward Error Correction encoders/deco

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–2 6.2 Viterbi The combination of convolutional coding and Viterbi

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–3 6.3 Reed-Solomon Outer Codec IMPORTANT It cannot be emphasize

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–4 6.3.1 Closed Network Modes A 220,200 code is used in transparen

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–5 6.4 Trellis Coding In the other FEC methods described here, the

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–6 6.5 Turbo Product Codec (Hardware Option) 6.5.1 Introduction

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–7 Table 6-4. Available TPC Modes Code Rate/Modulation Data Rate R

CDM-Qx Satellite Modem Revision 5 Preface MN/CDMQx.IOM iv CHAPTER 3. FUNCTIONAL DESCRIPTION ...

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–8 6.5.4 Comparison of all TPC Modes Mode Eb/No at BER = 10-6 Guar

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–9 It can be seen that the 8-PSK Rate 3/4 Turbo performance close

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–10 Figure 6-1. Vit

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–11 Figure 6-2. Vi

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–12 1E-91E-81E-71E-61E-51E-41E-31E-21E-11 2 3

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–13 1E-9 1E-8 1E-7 1E-6 1E-5 1E-4 1E-3 1E-2 1E-1 1 2

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–14 1E-9 1E-8 1E-7 1E-6 1E-5 1E-4 1E-3 1E-2 1E-1 1 2

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–15 1E-9 1E-8 1E-7 1E-6 1E-5 1E-4 1E-3 1E-2 1E-1 1 2

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–16 Figure 6-7. Rate

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–17 Figure 6-8. 16-Q

CDM-Qx Satellite Modem Revision 5 Preface MN/CDMQx.IOM v 5.6 TOP LEVEL SELECTION ...

CDM-Qx Satellite Modem Revision 5 Forward Error Correction Options MN/CDMQx.IOM 6–18 Notes: _______________________________________________________

7–1 Chapter 7. EDMAC CHANNEL 7.1 Theory Of Operation As explained earlier, EDMAC is an acronym for Embedded Distant-end Monitor And Control. This i

CDM-Qx Satellite Modem Revision 5 EDMAC Channel MN/CDMQx.IOM 7–2 When framing is used, the normal V.35 scrambler is no longer used. This V.35 appr

CDM-Qx Satellite Modem Revision 5 EDMAC Channel MN/CDMQx.IOM 7–3 Now, a unit that has been designated an EDMAC master not only responds to its own

CDM-Qx Satellite Modem Revision 5 EDMAC Channel MN/CDMQx.IOM 7–4 This page is intentionally left blank.

8–1 Chapter 8. AUTOMATIC UPLINK POWER CONTROL 8.1 Introduction Automatic Uplink Power Control (AUPC) is a feature whereby a local modem is permitted

CDM-Qx Satellite Modem Revision 5 Automatic Uplink Power Control (AUPC) MN/CDMQx.IOM 8–2 There are several important parameters associated with thi

CDM-Qx Satellite Modem Revision 5 Automatic Uplink Power Control (AUPC) MN/CDMQx.IOM 8–3 8.2.3 Alarm This parameter defines how the user wants the

CDM-Qx Satellite Modem Revision 5 Automatic Uplink Power Control (AUPC) MN/CDMQx.IOM 8–4 8.4 Monitoring The remote demodulator’s value of Eb/No ca

9–1 Chapter 9. DoubleTalk™ Carrier-in-Carrier® OPERATION The Modem optionally incorporates a proprietary technology licensed from Applied Signal Tech

CDM-Qx Satellite Modem Revision 5 Preface MN/CDMQx.IOM vi CHAPTER 9. DOUBLETALK™ CARRIER-IN-CARRIER® OPERATION ... 9–1 CHAPTER 10. R

CDM-Qx Satellite Modem Revision 5 Carrier-in-Carrier Operation MN/CDMQx.IOM 9–2 copy of the outbound modulators signal in time and frequency within

CDM-Qx Satellite Modem Revision 5 Carrier-in-Carrier Operation MN/CDMQx.IOM 9–3 Uplink Transponder ABDownlink Transponder ABTraditional FDMA Syst

CDM-Qx Satellite Modem Revision 5 Carrier-in-Carrier Operation MN/CDMQx.IOM 9–4 Notes: ___________________________________________________________

10–1 Chapter 10. REDUNDANCY Redundancy is built into the modem and can be enabled using the FAST optioning. Redundancy can be selected so as to per

CDM-Qx Satellite Modem Revision 5 Redundancy MN/CDMQx.IOM 10–2 Notes: ____________________________________________________________________________

11–1 Chapter 11. ETHERNET MANAGEMENT 11.1 Introduction The base modem is equipped with an RJ-45, 10/100BaseT Ethernet management interface used for

CDM-Qx Satellite Modem Revision 5 Ethernet Management (Base Modem) MN/CDMQx.IOM 11–2 11.3 Web Server (HTTP) Interface The embedded Web Server appli

CDM-Qx Satellite Modem Revision 5 Ethernet Management (Base Modem) MN/CDMQx.IOM 11–3 11.3.1 Web Server Menu Tree Table 12-1. Web Server Menu Tree

CDM-Qx Satellite Modem Revision 5 Ethernet Management (Base Modem) MN/CDMQx.IOM 11–4 To see the installed cards in the chassis, click Quick View und

CDM-Qx Satellite Modem Revision 5 Ethernet Management (Base Modem) MN/CDMQx.IOM 11–5 As you can see the MD icon is highlighted as well as the Co

CDM-Qx Satellite Modem Revision 5 Preface MN/CDMQx.IOM vii About this Manual This manual provides installation and operation information for the Com

CDM-Qx Satellite Modem Revision 5 Ethernet Management (Base Modem) MN/CDMQx.IOM 11–6 Using the web browser, the user can view the constellation of t

CDM-Qx Satellite Modem Revision 5 Ethernet Management (Base Modem) MN/CDMQx.IOM 11–7 Since the introduction of the spectrum analyzer feature in the

CDM-Qx Satellite Modem Revision 5 Ethernet Management (Base Modem) MN/CDMQx.IOM 11–8 11.4 SNMP Interface The Simple Network Management Protocol (SNM

CDM-Qx Satellite Modem Revision 5 Ethernet Management (Base Modem) MN/CDMQx.IOM 11–9 11.4.2 SNMP Community Strings The modem uses community strings

CDM-Qx Satellite Modem Revision 5 Ethernet Management (Base Modem) MN/CDMQx.IOM 11–10 The following tables are the Alarms and Faults v1 traps / v2 n

CDM-Qx Satellite Modem Revision 5 Ethernet Management (Base Modem) MN/CDMQx.IOM 11–11 Once logged into the Telnet interface as the Administrator,

CDM-Qx Satellite Modem Revision 5 Ethernet Management (Base Modem) MN/CDMQx.IOM 11–12 There is a disadvantage when using Windows DOS as Telnet Clien

CDM-Qx Satellite Modem Revision 5 Ethernet Management (Base Modem) MN/CDMQx.IOM 11–13

CDM-Qx Satellite Modem Revision 5 Ethernet Management (Base Modem) MN/CDMQx.IOM 11–14

A–1 Appendix A. SUMMARY OF SPECIFICATIONS A.1 Modulator Note: Features not in the initial product release are identified in parentheses. Modulatio

CDM-Qx Satellite Modem Revision 5 Preface MN/CDMQx.IOM viii ELECTRICAL SAFETY The CDM-Qx Multi-Channel Modem with DoubleTalk™ Carrier-in-Carrier®

CDM-Qx Satellite Modem Revision 5 Summary of Specifications MN/CDMQx.IOM A–2 Output Connector Type BNC Female (70/140MHz IF) Type N Female (L-Band)

CDM-Qx Satellite Modem Revision 5 Summary of Specifications MN/CDMQx.IOM A–3 A.2 Demodulator FEC, Data rate range, operating modes, descrambling, in

CDM-Qx Satellite Modem Revision 5 Summary of Specifications MN/CDMQx.IOM A–4 (With two adjacent carriers, each 7 dB higher than the desired carrier)

CDM-Qx Satellite Modem Revision 5 Summary of Specifications MN/CDMQx.IOM A–5 A.3 Data Interfaces Note: Features not in the initial product release

CDM-Qx Satellite Modem Revision 5 Summary of Specifications MN/CDMQx.IOM A–6 A.5 Data Rate Ranges FEC Type Modulation Code Rate Data Rate Range V

CDM-Qx Satellite Modem Revision 5 Summary of Specifications MN/CDMQx.IOM A–7 A.6 Framing Summary (Future) Transparent EDMAC (Future) Overhead adde

CDM-Qx Satellite Modem Revision 5 Summary of Specifications MN/CDMQx.IOM A–8 Notes: _______________________________________________________________

B–1 Appendix B. FLASH UPGRADING The modem eliminates the need for updating firmware by physically replacing EPROMs. Instead, the modem uses ‘flash me

CDM-Qx Satellite Modem Revision 5 Flash Upgrading MN/CDMQx.IOM B–2 Alternate Method: CMD Prompt: At the command prompt (c:\>) type "MD tem

CDM-Qx Satellite Modem Revision 5 Flash Upgrading MN/CDMQx.IOM B–3 Verify the communication and connection by issuing a "ping" command t

CDM-Qx Satellite Modem Revision 5 Preface MN/CDMQx.IOM ix INSTALLATION The installation and connection to the line supply must be made in compliance

CDM-Qx Satellite Modem Revision 5 Flash Upgrading MN/CDMQx.IOM B–4 10. Verify the new software versions are booting by observing the following me

C-1 Appendix C. REMOTE CONTROL This section describes the protocol and message command set for remote monitor and control of the CDM-QX Satellite Mo

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-2 Each target has a unique address, and each time the controller transmits, in a fr

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-3 C.4 Packet Structure Controller-to-target: Start of Packet Target Address Ad

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-4 C.4.2 Address Up to 9999 devices can be uniquely addressed. The RS-485 base addr

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-5 C.4.4 Instruction Code Qualifier This is a single character that further quali

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-6 First, if the controller has sent a query code to a target (for example TFQ?, mea

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-7 The target acknowledges the message indicating that the unit is in Ethernet mode

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-8 Notes: _________________________________________________________________________

C-9 C.5.1 TX Remote Commands Parameter Type Command (Instruction Code and Qualifier) Arguments for Command or Response to Query Description of Argume

CDM-Qx Satellite Modem Revision 5 Preface MN/CDMQx.IOM x TELECOMMUNICATIONS TERMINAL EQUIPMENT DIRECTIVE In accordance with the Telecommunication

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-10 Parameter Type Command (Instruction Code and Qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-11 Parameter Type Command (Instruction Code and Qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-12 Parameter Type Command (Instruction Code and Qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-13 C.5.2 RX Remote Commands Parameter Type Command (Instruction Code and qu

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-14 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-15 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-16 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-17 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-18 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-19 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 5 Preface MN/CDMQx.IOM xi WARRANTY POLICY This Comtech EF Data product is warranted against defects in material and

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-20 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-21 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-22 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-23 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-24 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-25 Parameter Type Command (Instruction Code and qualifier) Arguments for Com

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-26 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-27 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-28 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-29 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 5 Preface MN/CDMQx.IOM xii Notes: ________________________________________________________________________________

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-30 C.5.4 Query Commands Parameter Type Command (Instruction Code and qualifier

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-31 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-32 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-33 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-34 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-35 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-36 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-37 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-38 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-39 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

1–1 Chapter 1. INTRODUCTION 1.1 Introduction The CDM-Qx, Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® is a 70/140 MHz (or CDM-

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-40 C.5.5 Bulk Commands Parameter Type Command (Instruction Code and qualifier)

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-41 Parameter Type Command (Instruction Code and qualifier) Arguments for Comm

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-42 C.5.6 BUC Commands Parameter Type Command (Instruction Code and qualifier)

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-43 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-44 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-45 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-46 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-47 C.5.8 Built-in BERT commands (BER Tester) Parameter Type Command (Instruct

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-48 Parameter Type Command (Instruction Code and Qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-49 C.5.9 Spectrum Analyzer Commands Parameter Type Command (Instruction Code a

CDM-Qx Satellite Modem Revision 5 Introduction MN/CDMQx.IOM 1–2 1.2 Features The Modem includes such features as the following: • DoubleTalk™ Carr

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-50 C.5.10 Drop & Insert Commands (E1 CCS Only) for D&I++ Parameter Ty

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-51 Parameter Type Command (Instruction Code and qualifier) Arguments for Comma

CDM-Qx Satellite Modem Revision 4 Remote Control MN/CDMQx.IOM C-52 Notes: ___________________________________________________________________

D–1 Appendix D. Carrier-in-Carrier® PERFORMANCE CHARACTERIZATION D.1 Carrier-in-Carrier® Description DoubleTalk™ Carrier-in-Carrier® (CnC) is an adap

CDM-Qx Satellite Modem Revision 5 CnCPerformance Characterization MN/CDMQx.IOM D–2 Nominally, these effects are treated independently so it is possi

CDM-Qx Satellite Modem Revision 5 CnCPerformance Characterization MN/CDMQx.IOM D–3 The results are plotted for two equally spaced adjacent carriers

CDM-Qx Satellite Modem Revision 5 CnCPerformance Characterization MN/CDMQx.IOM D–4 Figure D-2. QPSK 3/4 Turbo degradation versus relative carrier

CDM-Qx Satellite Modem Revision 5 CnCPerformance Characterization MN/CDMQx.IOM D–5 Other QPSK turbo code rates have similar performance and the QPSK

CDM-Qx Satellite Modem Revision 5 CnCPerformance Characterization MN/CDMQx.IOM D–6 Case D shows two desired CnC carriers accompanied by a CnC carri

CDM-Qx Satellite Modem Revision 5 CnCPerformance Characterization MN/CDMQx.IOM D–7 The following CDM-Qx configurations were tested for Eb/No degrada

CDM-Qx Satellite Modem Revision 5 Introduction MN/CDMQx.IOM 1–3 1.2.1 DoubleTalk™ Carrier-in-Carrier® Designed for bandwidth compression, Carrier-in

CDM-Qx Satellite Modem Revision 5 CnCPerformance Characterization MN/CDMQx.IOM D–8 Figure D-8. CnC Ratio For 16-QAM D.5 Symbol Rate Ratio CnC oper

CDM-Qx Satellite Modem Revision 5 CnCPerformance Characterization MN/CDMQx.IOM D–9 Referring back to Error! Reference source not found., the degrada

CDM-Qx Satellite Modem Revision 5 CnCPerformance Characterization MN/CDMQx.IOM D–10 Notice from the table, the CnC change is proportional to the upl

CDM-Qx Satellite Modem Revision 5 CnCPerformance Characterization MN/CDMQx.IOM D–11 D.8 2nd CnC Example: CnC Ratio With Asymmetric Links Networks w

CDM-Qx Satellite Modem Revision 5 CnCPerformance Characterization MN/CDMQx.IOM D–12 The link parameters and results are summarized in the table: Pa

CDM-Qx Satellite Modem Revision 5 CnCPerformance Characterization MN/CDMQx.IOM D–13 D.9 3rd CnC Example: Asymmetric Link With Rain Fade A reasonable

CDM-Qx Satellite Modem Revision 5 CnCPerformance Characterization MN/CDMQx.IOM D–14 Eb/No Degradation At Site B Parameter Due To Fade At B (dB) Due

Metric Conversions Units of Length Unit Centimeter Inch Foot Yard Mile Meter Kilometer Millimeter 1 centimeter — 0.3937 0.03281 0.0

2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 • 333 • 2200 PHONE 480 • 333 • 2161 FAX

CDM-Qx Satellite Modem Revision 5 Introduction MN/CDMQx.IOM 1–4 1.2.4 Data Interfaces The Modem can be ordered with a number of interfaces. Each da

CDM-Qx Satellite Modem Revision 5 Introduction MN/CDMQx.IOM 1–5 1.3 Major Assemblies Assembly Description PL/10570-1 1 PPM Reference IF Backplan

CDM-Qx Satellite Modem Revision 5 Introduction MN/CDMQx.IOM 1–6 1.4 FAST Options and Hardware Options The Modem is extremely flexible and powerful,

CDM-Qx Satellite Modem Revision 5 Introduction MN/CDMQx.IOM 1–7 1.4.1 FAST Accessible Options Comtech EF Data’s FAST system allows immediate impleme

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CDM-Qx Satellite Modem Revision 5 Introduction MN/CDMQx.IOM 1–8 Turbo Product Coding provides one of the best Forward Error Correction technologies

CDM-Qx Satellite Modem Revision 5 Introduction MN/CDMQx.IOM 1–9 1.5 L-Band Fully configured, the modem will meet or exceed all of the applicable r

CDM-Qx Satellite Modem Revision 5 Introduction MN/CDMQx.IOM 1–10 Notes: ___________________________________________________________________________

2–1 Chapter 2. INSTALLATION 2.1 Unpacking Inspect shipping containers for damage. If shipping containers are damaged, keep them until the contents o

CDM-Qx Satellite Modem Revision 5 Installation MN/CDMQx.IOM 2–2 2.2 Mounting If the modem is to be mounted in a rack, ensure that there is adequate

CDM-Qx Satellite Modem Revision 5 Installation MN/CDMQx.IOM 2–3 Figure 2-1. Installation of the Optional Mounting Brackets Equipment Rack Rear

CDM-Qx Satellite Modem Revision 5 Installation MN/CDMQx.IOM 2–4 2.3 Configuration There are no internal jumpers to configure. All configuration is

3–1 Chapter 3. FUNCTIONAL DESCRIPTION The modem has two fundamentally different types of interface: IF and Data. • The Data interface can be a bi-

CDM-Qx Satellite Modem Revision 5 Functional Description MN/CDMQx.IOM 3–2 The RX IF signal is translated and filtered at an intermediate frequency

CDM-Qx Satellite Modem Revision 5 Functional Description MN/CDMQx.IOM 3–3 Figure 3-1. Modem Block Diagram

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CDM-Qx Satellite Modem Revision 5 Functional Description MN/CDMQx.IOM 3–4 Notes: ________________________________________________________________

4–1 Chapter 4. EXTERNAL CONNECTIONS 4.1 Introduction The modem is constructed as a 1RU high rack-mounting chassis, which can be freestanding, if desi

CDM-Qx Satellite Modem Revision 5 External Connections MN/CDMQx.IOM 4–2 4.2 Front Panel LED Keypad Display (VFD) Indicators The Modem front pa

CDM-Qx Satellite Modem Revision 5 External Connections MN/CDMQx.IOM 4–3 4.3 Rear Panel The rear panel can be customized to meet the customer’s requi

CDM-Qx Satellite Modem Revision 5 External Connections MN/CDMQx.IOM 4–4 Notes: 1. One interface per Modem (i.e. Modulator and Demodulator card comb

CDM-Qx Satellite Modem Revision 5 External Connections MN/CDMQx.IOM 4–5 Table 4-1. Modem Rear Panel Connectors Name Ref. Desig. Connector Type F

CDM-Qx Satellite Modem Revision 5 External Connections MN/CDMQx.IOM 4–6 Name Ref. Desig. Connector Type Function Configuration #3 - Modem 1 with G

CDM-Qx Satellite Modem Revision 5 External Connections MN/CDMQx.IOM 4–7 Note: The European EMC Directive (EN55022, EN50082-1) requires using properl

CDM-Qx Satellite Modem Revision 5 External Connections MN/CDMQx.IOM 4–8 4.4.4 Alarms Connector All modules contain an alarm connector. The Alarms c

CDM-Qx Satellite Modem Revision 5 External Connections MN/CDMQx.IOM 4–9 4.4.5 Balanced G.703 Connector Tx/Rx Connector The Balanced G.703 connection

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CDM-Qx Satellite Modem Revision 5 External Connections MN/CDMQx.IOM 4–10 4.4.7 RS-530 Data Interface Connector The Data connector is a 25-pin ‘D’ t

CDM-Qx Satellite Modem Revision 5 External Connections MN/CDMQx.IOM 4–11 4.4.8 Quad E1 Data Interface Connectors The (2) Data connectors on the Qua

CDM-Qx Satellite Modem Revision 5 External Connections MN/CDMQx.IOM 4–12 4.4.9 RX and TX IF Connectors The IF connectors will depend on the configu

CDM-Qx Satellite Modem Revision 5 External Connections MN/CDMQx.IOM 4–13 4.7 Ground Connector A #10-32 stud on the rear panel of the modem is used f

CDM-Qx Satellite Modem Revision 5 External Connections MN/CDMQx.IOM 4–14 This page is intentionally left blank.

5–1 Chapter 5. FRONT PANEL OPERATION 5.1 Introduction Figure 5-1. Front Panel Display The user can fully control and monitor the operation of the

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–2 On most menu screens, the user will observe a flashing solid block curso

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–3 The keypad is shown in Figure 5-2: Diamond Keypad (Presently us

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–4 5.2 Left-Hand Display Area The left side of the display (or slot screen)

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–5 Two modems can share a modem: The selected modem is the modulator demod

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CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–6 5.2.3 Spectrum Analyzer The built-in spectrum analyzer mode is available

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–7 Para Title Remarks 5.5 Opening Screen 5.6 Main Menu Select: Config;

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–8 5.5 Opening Screen This screen is displayed whenever power is first app

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–9 5.6.1 CONFIG The sub-branches available are: Remote (Remote Control) Th

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–10 5.6.1.1 (ConfigRemote) – REMOTE CONTROL Select Local, Serial, or Ether

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–11 (ConfigRemoteSerialInterfaceRS485) - RS-485 Bus Address However, i

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–12 (ConfigRemoteEthernetGateway) If Gateway is selected, the submenu w

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–13 (ConfigRemoteEthernetSNMPCommunities) If Communities is selected:

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–14 If Community is selected, the following sub-menu is displayed. Edit th

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–15 5.6.1.2 (ConfigTx) - TRANSMIT Select FEC, Mod, Code, Data, Freq, On/O

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CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–16 If the user changes a parameter within this hierarchy, the other paramet

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–17 (ConfigTxCode) – TX CODE RATE All possible choices are presented

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–18 FEC Type Modulation Code Rate Data Rate Range EDMAC limited? Viterbi

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–19 If (using the ODU, BUC menus) the user has selected a BUC LO frequency (

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–20 (ConfigTxPwr) – TRANSMIT POWER LEVEL MODE Select the output po

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–21 (ConfigTxPwrAUPC) – TARGET Eb/No Edit the target Eb/No of the remote

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–22 (ConfigTxPwrCombined) – COMBINED TRANSMIT POWER The combined powe

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–23 Internal indicates that the CDM-QX will supply a clock to the DTE, whic

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–24 (ConfigTxTxα) – TX Roll-Off (α) factor Select 20% or 35%, using the ◄

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–25 The FEC type takes the highest configuration priority, and the selectio

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CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–26 (ConfigRxDemod) – DEMODULATION SCHEME All possible choices are p

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–27 (ConfigRxData) – RX DATA RATE In QDI mode, these data rates are read

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–28 (ConfigRxFreq) – RX FREQUENCY Edit the receive frequency. This is

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–29 (ConfigRxDescram) - DESCRAMBLER Options are: Default-On the appro

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–30 being slightly different from the local clock (a so-called plesiochronou

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–31 (ConfigRxMiscEbNo) - Eb/No ALARM Edit the Eb/No alarm point. This

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–32 (ConfigRxCnCMode) – CnC® MODE OF OPERATION Select Off, or On using

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–33 (ConfigRxCnCSrchDelay) – CnC SEARCH DELAY Edit the Min/Max Search De

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–34 (ConfigGroupRedundancy) Selecting “Config” allows the user to set

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–35 (ConfigGroupRedundancyMode) Default is “Manual”.

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CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–36 (ConfigFrameEDMAC, or ConfigFrameEDMAC-2) - EDMAC or EDMAC-2 Comt

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–37 Edit the address of the distant-end modem that this unit will pass mess

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–38 5.6.1.6 (ConfigInterface) – DATA INTERFACE Data interface for each car

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–39 If HSSI is selected, the following sub men

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–40 If Length is selected, the following sub-menu will be displayed: Edit t

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–41 If Insert is selected, the sub-menu will display: This is simi

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–42 5.6.1.7 (ConfigRef) - REFERENCE OSCILLATOR The modem can accept an

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–43 If Transmit is selected the following sub-menu will be displayed: Selec

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–44 If Reference is selected the following sub-menu will be displayed: Sel

CDM-Qx Satellite Modem Revision 5 Front Panel Operation MN/CDMQx.IOM 5–45 5.6.1.9 (ConfigODU) – OUTDOOR UNIT (for L-Band Unit Only) The ODU (O