Comtech EF Data DMD-2050E Specifikace Strana 1

MN-DMD2050E Revision 2 Comtech EF Data is an AS9100 Rev B / ISO9001:2000 Registered Company DMD-2050E Universal Satellite Modem Installa

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DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–58 Table 3-4. Reed-Solomon Codes Type of Service Data Rate (Kbps)

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–59 rate through the modem. The overhead channel is recovered at t

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–60 Kbps Standard IBS Baud Rate Example Kbps Enhanced Mode Baud R

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–61 The ratio of the Through Terrestrial Data Channel Rate to the

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–62 The user can connect whichever systems on the earth stations th

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–63 The number of user data slots and control words per frame is se

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–64 3.19.2 Aggregate Data Rate The aggregate data rate equals the

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–65 3.19.3 Overhead Rate Comparison The SCC Overhead Ratio varies

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–66 3.19.4 Actual Overhead Rate Calculation The following is the a

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–67 3.20 SCC OVERHEAD CHANNEL SETUP 1. Set the Framing Mode (loca

DMD-2050E Universal Satellite Modem Revision 2 Table of Contents MN-DMD2050E iii Table of Contents PREFACE ...

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–68 9. The physical connection to the DMD2050E for the overhead ch

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–69 3.21 Locating the DMD2050E ID Code Operational Procedure Uniqu

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–70 BLANK PAGE

MN-DMD2050E Revision 2 4–1 Chapter 4. User Interfaces 4.1 User Interfaces The DMD2050E has three interfaces available for typical operations: •

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–2 Table 4-1. Front Panel Functions Area Function VFD Shows operating

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–3 Parameter Type 0 – 9     Clear &  Clear &  IP Address

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–4 4.3 Parameter Setup 4.3.1 Select a Parameter Use the arrow keys to

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–5 4.4.1 MODULATOR Main Menu and Parameters 4.4.1.1 NETWORK SPEC (men

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–6 4.4.1.2 STRAP CODE The STRAP CODE is another means for quickly sett

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–7 DATA MENU Trellis (8PSK) {2/3} TPC (BPSK) {5/16, 21/44} ≤ 20Mbp

DMD-2050E Universal Satellite Modem Revision 2 Table of Contents MN-DMD2050E iv CHAPTER 2. INSTALLATION ...

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–8 DATA MENU TERR FRAMING {NONE, 188, 204} DVB Only DATA POLARITY {I

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–9 4.4.1.5 REED-SOLOMON (menu) IMPORTANT When Reed-Solomon is select

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–10 4.4.1.7 LOCAL AUPC (menu) NOTE When modems are configured for Rad

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–11 LOCAL AUPC MENU MINIMUM TX POWER {0 to -45 dB} Set the minimum Tran

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–12 LOCAL AUPC MENU TARGET Eb/No {4.0 to 16 dB} Set the desired Eb/No f

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–13 4.4.1.8 REMOTE AUPC (menu) NOTE Remote AUPC Menus are available o

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–14 8PSK 2/3 {NOT SELECTED, SELECTED} Used to select the mod/code rate

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–15 Closed Net All possible combinations are allowed. NOTE: DVB settin

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–16 IF MENU INPUT THRESHOLD (dBm) {-30 to –90} Sets the minimum carrie

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–17 DATA MENU SCRAMBLER SEL {NONE, V.35-IESS, V.35 CITT, V.35 EF, IBS w

DMD-2050E Universal Satellite Modem Revision 2 Table of Contents MN-DMD2050E v 3.5.3.3 SCT: Serial Clock Transmit ...

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–18 4.4.2.6 CNC (menu) IMPORTANT When the Carrier-in-Carrier® option

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–19 4.4.3 INTERFACE Main Menu and Parameters 4.4.3.1 TX SETUP (menu)

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–20 IMPORTANT When Ethernet Interface is selected or EBEM Network spe

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–21 4.4.3.1.1 DROP & INSERT (menu) DROP & INSERT MENU DROP MOD

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–22 4.4.3.2 RX SETUP (menu) RX SETUP MENU CIRCUIT ID Enter the Rx Ci

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–23 4.4.3.2.1 DROP & INSERT (menu) INSERT MODE {NONE, T1-D4, T1-ES

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–24 4.4.3.3 GENERAL (menu) GENERAL MENU EXT FREQ (MHz) {Variable Throu

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–25 MONITOR MENU CORRECTED BER The CBER display shows an estimated corr

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–26 NOTE Port status indicators are: Down: The link is down. Unreso

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–27 4.4.4.2 VOLTAGES (menu) VOLTAGES MENU TEMPERATURE Displays interna

DMD-2050E Universal Satellite Modem Revision 2 Table of Contents MN-DMD2050E vi 3.11.12.4 Estimating PSD Ratio from Satmaster ...

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–28 4.4.5 ALARMS Main Menu and Parameters Alarm details are described

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–29 4.4.6.3 TERMINAL (menu) TYPE {VT-100, WYSE50, VIEWPOINT} Select t

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–30 TCP/IP MENU BOOTp SERVER {128 – 257, default is 206} Only used if

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–31 4.4.6.6 SNMP (menu) A description of OID organization is provided

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–32 4.4.6.7 FTP (menu) PORT {XXXX} Select the desired port number.

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–33 4.4.6.9 TRANSEC (menu) TRANSEC MENU IP ADDR MASK {XXX.XXX.XXX.XXX}

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–34 4.4.6.10.1 MAIN BOARD (menu) NOTE Only the applicable VCO adjustm

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–35 CNC BOARD (menu) Indicates the part number for the CNC Board. DEBU

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–36 4.4.7 TEST Main Menu and Parameters TEST MENU TX TEST PATTERN {NON

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–37 TEST MENU IQ SAMPLING {ENABLE/DISABLE} Enables the I & Q patte

DMD-2050E Universal Satellite Modem Revision 2 Table of Contents MN-DMD2050E vii 4.4 Front Panel Main Menus ...

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–38 4.5 Terminal Mode Control The Terminal Mode Control lets you use a

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–39 For numerical input, use the number keys to input the data. Press E

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–40 BLANK PAGE

MN-DMD2050E Revision 2 5–1 Chapter 5. External Connections Figure 5-1. DMD2050E Universal Satellite Modem Front Panel Figure 5-2. DMD2050E Rear

DMD2050E Universal Satellite Modem External Connections MN-DMD2050E Revision 2 5–2 5.1 Power Connectors, Ground and Switches The DMD2050E units h

DMD2050E Universal Satellite Modem External Connections MN-DMD2050E Revision 2 5–3 5.2 Front Panel Connections 5.2.1 Key Loader Interface Label

DMD2050E Universal Satellite Modem External Connections MN-DMD2050E Revision 2 5–4 5.3 Rear Panel Connectors CAUTION Before you connect any cab

DMD2050E Universal Satellite Modem External Connections MN-DMD2050E Revision 2 5–5 5.3.2 EXT REF (J10) Label Description Connector Type Input Lev

DMD2050E Universal Satellite Modem External Connections MN-DMD2050E Revision 2 5–6 5.3.4 ALARM (J15) Label Description Connector Type ALARM J15

DMD2050E Universal Satellite Modem External Connections MN-DMD2050E Revision 2 5–7 5.3.4.1 IBS Network Alarms Configuration IBS Prompt Alarms IBS

DMD-2050E Universal Satellite Modem Revision 2 Table of Contents MN-DMD2050E viii 4.5 Terminal Mode Control...

DMD2050E Universal Satellite Modem External Connections MN-DMD2050E Revision 2 5–8 5.3.6 ASYNC (J17) Label Description Connector Type ASYNC J17

DMD2050E Universal Satellite Modem External Connections MN-DMD2050E Revision 2 5–9 5.3.8 MIL-188-114A (J19) Label Description Connector Type MI

DMD2050E Universal Satellite Modem External Connections MN-DMD2050E Revision 2 5–10 5.3.9 Monitor and Control Connectors J20, J21 Label Descript

MN-DMD2050E Revision 2 6–1 Chapter 6. Maintenance and Troubleshooting 6.1 Periodic Maintenance 6.1.1 Battery Replacement WARNING: DANGER OF EX

DMD2050E Univeral Satellite Modem Maintenance and Troubleshooting MN-DMD2050E Revision 2 6–2 6.2 Troubleshooting 6.2.1 Basic Troubleshooting Pro

DMD2050E Univeral Satellite Modem Maintenance and Troubleshooting MN-DMD2050E Revision 2 6–3 6.3 Alarms 6.3.1 Major Transmit Alarms Alarm Desc

DMD2050E Univeral Satellite Modem Maintenance and Troubleshooting MN-DMD2050E Revision 2 6–4 Alarm Description Status INPUT LVL THRESH Indicates t

DMD2050E Univeral Satellite Modem Maintenance and Troubleshooting MN-DMD2050E Revision 2 6–5 Alarm Description Status TPC CONFLICT CHK Indicates t

DMD2050E Univeral Satellite Modem Maintenance and Troubleshooting MN-DMD2050E Revision 2 6–6 Alarm Description Status RX AGC LEVEL Indicates Rx le

DMD2050E Univeral Satellite Modem Maintenance and Troubleshooting MN-DMD2050E Revision 2 6–7 Alarm Description Status +3.3V SUPPLY Shows the measu

DMD-2050E Universal Satellite Modem Revision 2 Table of Contents MN-DMD2050E ix 6.4 Alarm Masks ...

DMD2050E Univeral Satellite Modem Maintenance and Troubleshooting MN-DMD2050E Revision 2 6–8 6.4 Alarm Masks The DMD2050E self-monitors and isola

DMD2050E Univeral Satellite Modem Maintenance and Troubleshooting MN-DMD2050E Revision 2 6–9 Alarms are grouped into transmit and receive alarms.

DMD2050E Univeral Satellite Modem Maintenance and Troubleshooting MN-DMD2050E Revision 2 6–10 RX MAJOR (menu) {Pass/Fail} RX MINOR (menu) {Pass/Fa

DMD2050E Univeral Satellite Modem Maintenance and Troubleshooting MN-DMD2050E Revision 2 6–11 NOTE These alarms show the status of the alarms RE

DMD2050E Univeral Satellite Modem Maintenance and Troubleshooting MN-DMD2050E Revision 2 6–12 6.5 IBS Alarms and Actions Figure 6-1 and Table 6-1

MN-DMD2050E Revision 2 7–1 Chapter 7. Technical Specifications 7.1 Modulator Modulator Specifications Modulation BPSK, QPSK, OQPSK, 8-PSK, 8-QA

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–2 Modulator Specifications Turbo (16-QAM) {3/4, 7/8} ≤ 20Mb

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–3 Demodulator Specifications Turbo (OQPSK/QPSK) {1/2, 3/4, 7

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–4 7.5 Terrestrial Interfaces MIL-188-114A, HSSI GiGE 10/100/

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–5 7.11 Data Rate Limits 7.11.1 Non-DVB Non-DVB Data Rate Li

DMD-2050E Universal Satellite Modem Revision 2 Table of Contents MN-DMD2050E x 7.12.14 B/O/QPSK BER Performance (LDPC) ...

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–6 Non-DVB Data Rate Limits Modulation Code Rate Min Data Rate

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–7 7.11.2 DVB DVB Data Rate Limits Modulation Code Rate DVB M

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–8 DVB Data Rate Limits Modulation Code Rate DVB Mode Min Data

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–9 7.12 BER Specifications 7.12.1 BER Performance (Viterbi)

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–10 7.12.2 BER Performance (Sequential) Figure 7-2. DMD2050E

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–11 7.12.3 BER Performance (Viterbi with Reed-Solomon) Figur

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–12 7.12.4 BER Performance (Turbo) Figure 7-4. DMD2050E B/O

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–13 7.12.5 BER Performance (8PSK Trellis) Figure 7-5. DMD20

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–14 7.12.6 BER Performance (8PSK Turbo) Figure 7-6. DMD2050E

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–15 7.12.7 BER Performance (16QAM Viterbi) Figure 7-7. DMD20

DMD-2050E Universal Satellite Modem Revision 2 Table of Contents MN-DMD2050E xi D.2.2 IP Address ...

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–16 7.12.8 BER Performance (16QAM Viterbi with Reed-Solomon)

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–17 7.12.9 BER Performance (16QAM Turbo) Figure 7-9. DMD2050

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–18 7.12.10 BER Performance (OQPSK Turbo) Figure 7-10. DMD2

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–19 7.12.11 BER Performance (BPSK Turbo) Figure 7-11. DMD20

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–20 7.12.12 BER Performance (8PSK Turbo) Figure 7-12. DMD20

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–21 7.12.13 BER Performance (16QAM Turbo) Figure 7-13. DMD2

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–22 7.12.14 B/O/QPSK BER Performance (LDPC) Figure 7-14. DM

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–23 7.12.15 8PSK / 8QAM BER Performance (LDPC) Figure 7-15.

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–24 7.12.16 16QAM BER Performance (LDPC) Figure 7-16. DMD205

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–25 7.12.17 BER Performance B/O/QPSK (MILSTD 188-165B or STAN

DMD-2050E Universal Satellite Modem Revision 2 Table of Contents MN-DMD2050E xii E.4.3.3 PCM-31 ...

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–26 7.12.18 BER Performance 8-PSK (MILSTD 188-165B or STANAG)

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–27 7.12.19 BER Performance 16APSK (MILSTD 188-165B or STANAG

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–28 1/2 Rate 3/4 Rate 7/8 Rate 1/2 Rate 3/4 Rate 7/8 Ra

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–29 Turbo 0.495 Turbo 0.793 Turbo 0.495 Turbo 0.7931E-3

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–30 3/4 Rate 7/8 Rate 3/4 Rate 7/8 Rate1E-3 8.9 dB 10.3

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–31 1/2 Rate 3/4 Rate 7/8 Rate 1/2 Rate 3/4 Rate 7/8

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–32 1/2 Rate 2/3 Rate 3/4 Rate 1/2 Rate 2/3 Rate 3/4 R

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–33 1/2 Rate 2/3 Rate 3/4 Rate 7/8 Rate19/20 Rate1/2 Rate

DMD2050E Universal Satellite Modem Technical Specifications MN-DMD2050E Revision 2 7–34 7.13 AGC Output Voltage The AGC Output Voltage is a funct

MN-DMD2050E Revision 2 A–1 Appendix A. Product Options A.1 Hardware Options These enhanced interface cards are available: DC Input Prime Power

DMD-2050E Universal Satellite Modem Revision 2 Table of Contents MN-DMD2050E xiii APPENDIX H. ETHERNET DATA INTERFACE SETUP...

DMD2050E Universal Satellite Modem Product Options MN-DMD2050E Revision 2 A–2 BLANK PAGE

MN-DMD2050E Revision 2 B–1 Appendix B. Front Panel Upgrades and Demonstration Mode B.1 Introduction The DMD2050E Universal Satellite Modem allow

DMD2050E Universal Satellite Modem Front Panel Upgrade Procedure MN-DMD2050E Revision 2 B–2 B.3.1 Record the Features and Options Find and record

DMD2050E Universal Satellite Modem Front Panel Upgrade Procedure MN-DMD2050E Revision 2 B–3 B.3.2 Record the Unit ID Comtech requests the Unit ID

DMD2050E Universal Satellite Modem Front Panel Upgrade Procedure MN-DMD2050E Revision 2 B–4 B.3.4 Install the Code Use the front panel to enter t

DMD2050E Universal Satellite Modem Front Panel Upgrade Procedure MN-DMD2050E Revision 2 B–5 B.3.5 Demonstration Mode Considerations The unit uses

DMD2050E Universal Satellite Modem Front Panel Upgrade Procedure MN-DMD2050E Revision 2 B–6 B.3.6 Cancel the Demonstration Mode IMPORTANT If you

MN-DMD2050E Revision 2 C–1 Appendix C. Carrier Control C.1 Carrier Control and Alarms If a TX major alarm occurs, modulator output is muted auto

DMD2050E Universal Satellite Modem Carrier Control MN-DMD2050E Revision 2 C–2 C.3 Carrier States These are the carrier states: • Carrier OFF •

DMD2050E Universal Satellite Modem Carrier Control MN-DMD2050E Revision 2 C–3 2. The output starts again automatically. C.3.4 Carrier VSAT The ca

DMD-2050E Universal Satellite Modem Revision 2 Table of Contents MN-DMD2050E xiv Tables Table 3-1. Spectral Efficiency using DoubleTalk Carrier-

DMD2050E Universal Satellite Modem Carrier Control MN-DMD2050E Revision 2 C–4 BLANK PAGE

MN-DMD2050E Revision 2 D–1 Appendix D. Web Interface Setup Guide D.1 Introduction The web interface lets Radyne products connect and communicate

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–2 D.2.2 IP Address IMPORTANT Before you set an IP address, c

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–3 D.3.2 User Account Data IMPORTANT All entries are case-sen

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–4 IMPORTANT All entries are case-sensitive. To set up a Use

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–5 D.2 Reset a User Account Sometimes, it is necessary to rese

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–6 D.4 Equipment Website Once you know that the modem is acces

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–7 The Introduction page shows general information, such as: •

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–8 D.5 Web Page Appearance This page displays the Monitor and

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–9 D.6 Configure Web Browsers for the Radyne WEB Interface D

DMD-2050E Universal Satellite Modem Revision 2 Table of Contents MN-DMD2050E xv Figures Figure 1-1. DMD2050E Universal Satellite Modem Front Pa

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–10 D.6.2.1 Change the encoding: Click View on the Firefox men

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–11 D.6.2.2 Install the Internet Explorer Tab V2 add-on The In

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–12 D.6.3 Configure Chrome for the Radyne WEB Browser When you

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–13 D.6.3.1 Change the encoding On the Chrome address bar, cli

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–14 D.6.3.2 Install the Internet Explorer Tab for Chrome The I

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–15 D.6.4 Configure Safari for the Radyne WEB Browser IMPORTA

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–16 D.6.4.2 Reset the Ethernet M&C port To reset the Ether

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–17 On the Monitor & Control, Password Setup or IP Administ

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–18 D.6.4.4 Change the encoding Click View on the Safari menu

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–19 D.6.5 Configure Maxthon for the Radyne WEB Browser On the

DMD-2050E Universal Satellite Modem Revision 2 Table of Contents MN-DMD2050E xvi Figure D-3. Monitor and Control Web Page ...

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–20 D.6.5.1 Change the browser mode Two browser modes are poss

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–21 D.6.5.2 Change the encoding On the Monitor & Control p

DMD2050E Universal Satellite Modem Web Browser Setup Guide MN-DMD2050E Revision 2 D–22 BLANK PAGE

MN-DMD2050E Revision 2 E–1 Appendix E. Drop and Insert (Standard and Efficient Options) E.1 Introduction Drop and Insert (D&I) functions

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–2 Objective Menu Path Requirement Find the G.703 interface c

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–3 Figure E-1. Looped Modems Figure E-2 Looped Modems wi

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–4 E.4 Functional Descriptions E.4.1 Drop Only When Drop is

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–5 Figure E-4 Insert Only with Eternal Frame Source Figure

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–6 E.4.3 Data Formats The terrestrial data formats compatibl

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–7 drop and n timeslots to insert where n = 1, 2, 3, 4, 5, 6,

xix PREFACE About this Manual This manual gives installation and operation information for the Comtech EF Data DMD2050E Universal Product Modem.

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–8 SATCh TS Enter to Edit Any changes made in these displa

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–9 Example : For a modem w/ Drop and Insert enabled at a data

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–10 Map Copy RX EDIT > RX ACTIVE 4. Press &l

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–11 E.5.1 Data Rate Data Rate affects the Drop and Insert fu

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–12 n = 12, data rate = 768000 n = 15, data rate = 960000 n =

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–13 E.5.3.1 Insert Terrestrial Frame Source The Insert Terre

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–14 Under Tx D&I: Set Drop Mode = T1-D4

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–15 Set Conv Enc = 3/4 Rate VIT Under Interface: Unde

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–16 Set Rx Type according to your hardware configuration

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–17 E.5.4.1 D&I Clock Setup Examples Figure E-7 Trans

DMD2050E Universal Product Modem Revision 2 Preface MN-DMD2050E xx Electrical Safety The DMD2050E has been shown to comply with the EN 60950 Safety

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–18 Figure E-9 Rx Only With Trunk Figure E-10 Rx Only No

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–19 E.6 D&I Maps and Map Editing The Drop and Insert mul

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–20 Therefore, in this case only the first six entries of the

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–21 map through the modem’s LCD; when editing is complete, th

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–22 time slots of the T1 or E1 frame. The Multiplexer would

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–23 This would be used with T1 frames where channels 1 throug

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–24 E.8 Prerequisite In order for a modem to be configured f

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–25 E.9 Efficient Drop and Insert Mode With Efficient Drop a

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–26 600 station in-band rate. In most cases, this

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–27 E.9.4 Calculating the Efficient D&I Rate with Enhanc

DMD2050E Universal Product Modem Revision 2 Preface MN-DMD2050E xxi Environmental Do not operate the DMD2050E in an environment where the unit is ex

DMD2050E Universal Satellite Modem Efficient Drop and Insert MN-DMD2050E Revision 2 E–28 X = Truncation of (1.92) X = 1 Add 1 * 5 * 125 bps to

MN-DMD2050E Revision 2 F–1 Appendix F. TCP/IP Ethernet Setup F.1 Introduction The modem supports SNMP, FTP protocols and the Web Browser. Utili

DMD2050E Universal Satellite Modem TCP/IP Ethernet Setup MN-DMD2050E Revision 2 F–2 • MODEM IP ADDR 010.000.000.001 • SERVER IP ADDR 010.0

DMD2050E Universal Satellite Modem TCP/IP Ethernet Setup MN-DMD2050E Revision 2 F–3 and loop back addresses will not be allowed. Example Server I

DMD2050E Universal Satellite Modem TCP/IP Ethernet Setup MN-DMD2050E Revision 2 F–4 F.4 Ethernet Test F.4.1 Connecting the Modem Ethernet Cable

DMD2050E Universal Satellite Modem TCP/IP Ethernet Setup MN-DMD2050E Revision 2 F–5 1. Click the Start button. 2. Select Settings and click Co

DMD2050E Universal Satellite Modem TCP/IP Ethernet Setup MN-DMD2050E Revision 2 F–6 Internet Protocol (TCP/IP) Properties 9. Select “Use the fo

DMD2050E Universal Satellite Modem TCP/IP Ethernet Setup MN-DMD2050E Revision 2 F–7 F.5 Testing the Ethernet Connection using the Ping Program (O

DMD2050E Universal Satellite Modem TCP/IP Ethernet Setup MN-DMD2050E Revision 2 F–8 4. If the ping is unsuccessful the screen will display: C:\>

MN-DMD2050E Revision 2 G–1 Appendix G. AUPC Operation G.1 Automatic Uplink Power Control (AUPC Operation) The modem has an optional built-in pro

DMD2050E Universal Product Modem Revision 2 Preface MN-DMD2050E xxii CE Mark Comtech EF Data declares that the DMD2050E meets the necessary requirem

DMD2050E Universal Satellite Modem AUPC Operation MN-DMD2050E Revision 2 G–2 drop in the remote Eb/No, it slowly begins to raise the output power,

DMD2050E Universal Satellite Modem AUPC Operation MN-DMD2050E Revision 2 G–3 The local receiver must be tuned and locked to the transmitter and th

DMD2050E Universal Satellite Modem AUPC Operation MN-DMD2050E Revision 2 G–4 When the rain diminishes, Local modem will see the remote Es/No begin

MN-DMD2050E Revision 2 H–1 Appendix H. Ethernet Data Interface Setup H.1 Configuring the modem to use the Ethernet Data Interface (Optional) Whe

DMD2050E Universal Satellite Modem Ethernet Data Interface Setup MN-DMD2050E Revision 2 H–2 When Ethernet Data Interface is selected, the Tx Clock

DMD2050E Universal Satellite Modem Ethernet Data Interface Setup MN-DMD2050E Revision 2 H–3 When Port 4 is selected for Daisy Chain, any data rece

DMD2050E Universal Satellite Modem Ethernet Data Interface Setup MN-DMD2050E Revision 2 H–4 H.1.5 Setting Up The DMD2050E Ethernet Bridge To Opera

DMD2050E Universal Satellite Modem Ethernet Data Interface Setup MN-DMD2050E Revision 2 H–5 H.1.6 Packet Statistics The following statistics are a

DMD2050E Universal Satellite Modem Ethernet Data Interface Setup MN-DMD2050E Revision 2 H–6 BLANK PAGE

MN-DMD2050E Revision 2 I–1 Appendix I. Strap Codes I.1 Strap Codes The Strap Code is a quick set key that sets many of the modem parameters. For

DMD2050E Universal Product Modem Revision 2 Preface MN-DMD2050E xxiii Product support On the web http://www.comtechefdata.com/support.asp Return mat

DMD2050E Universal Satellite Modem Strap Codes MN-DMD2050E Revision 2 I–2 NOTE Dis = Disable in Table I-1. Table I-1. Strap Codes Strap Code (D

DMD2050E Universal Satellite Modem Strap Codes MN-DMD2050E Revision 2 I–3 Strap Code (Decimal) Data Rate (Kbps) Overhead Code Rate Type Framing Ty

DMD2050E Universal Satellite Modem Strap Codes MN-DMD2050E Revision 2 I–4 Strap Code (Decimal) Data Rate (Kbps) Overhead Code Rate Type Framing Ty

DMD2050E Universal Satellite Modem Strap Codes MN-DMD2050E Revision 2 I–5 Strap Code (Decimal) Data Rate (Kbps) Overhead Code Rate Type Framing Ty

DMD2050E Universal Satellite Modem Strap Codes MN-DMD2050E Revision 2 I–6 I.2 Sample Applications The following section provides brief applicatio

DMD2050E Universal Satellite Modem Strap Codes MN-DMD2050E Revision 2 I–7 I.2.1 Operational Case Examples IMPORTANT Make sure to set the data r

DMD2050E Universal Satellite Modem Strap Codes MN-DMD2050E Revision 2 I–8 Set desired Tx frequency and power level Turn IF on Demodulator

DMD2050E Universal Satellite Modem Strap Codes MN-DMD2050E Revision 2 I–9 I.2.1.2 Case 2: IBS 1.544 Mbps, 3/4 Rate Viterbi Start with the Data R

DMD2050E Universal Satellite Modem Strap Codes MN-DMD2050E Revision 2 I–10 Demodulator: Method 1 - Under Interface Menu: Set Interface type Se

DMD2050E Universal Satellite Modem Strap Codes MN-DMD2050E Revision 2 I–11 I.2.1.3 Case 3: Closed Network, 3/4 Rate Viterbi, IBS Overhead Start

ER-DMD2050E-EA2 Rev - PLM C-0028800 Errata A for MN-DMD2050E Rev 2 Comtech EF Data Documentation Update Subject: Chapter 3, Theory of Operati

DMD2050E Universal Product Modem Revision 2 Preface MN-DMD2050E xxiv Warranty Policy Comtech EF Data products are warranted against defects in mater

DMD2050E Universal Satellite Modem Strap Codes MN-DMD2050E Revision 2 I–12 Demodulator: Method 1 - Under Interface Menu: Set Interface type Se

DMD2050E Universal Satellite Modem Strap Codes MN-DMD2050E Revision 2 I–13 I.2.1.4 Case 4: Loop Timing Example Method 1 - Under Interface Menu:

DMD2050E Universal Satellite Modem Strap Codes MN-DMD2050E Revision 2 I–14 BLANK PAGE

MN-DMD2050E Revision 2 J–1 Appendix J. ITA Operation J.1 Information Throughput Adaptation (ITA Operation) Information Throughput Adaptation (IT

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–2 J.1.1 Properties of ITA on the DMD2050E: • The DMD2050E output power

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–3 J.1.2 Basic Setup (Example) The modems will be initially configured i

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–4 J.1.2.1 Initial DMD2050E Modem Setup Table J-2 - Initial Modem Setup

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–5 Figure J-1 - Initial Setup DMD2050E, Modulator IF

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–6 Figure J-2 - Initial Setup DMD2050E, Modulator Data

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–7 Figure J-3 - Initial Setup DMD2050E, Modulator ITA

MN-DMD2050E Revision 2 1– 1 Chapter 1. Introduction 1.1 Overview The new DMD2050E Satellite Modem (Figure 1-1) breaks new ground in flexibility a

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–8 Figure J-4 - Initial Setup DMD2050E, Demodulator IF

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–9 Figure J-5 - Initial Setup DMD2050E, Demodulator Data

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–10 Figure J-6 - Initial Setup DMD2050E, Demodulator ITA At this point

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–11 Table J-3 - ITA Setup FW: F05280-AH28 REV 4.4.28 (7/06 9:47)MAIN

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–12 The ITA Menu Functions and their descriptions are shown in Table J-4

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–13 Table J-5. Receive ITA Functions Function AUPC Available Options Desc

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–14 Table J-6 – ITA Waveform Masks (Modulator UUT) DMD2050E MENU SETTINGS

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–15 Table J-7 – ITA Waveform Masks (Demodulator UUT) DMD2050E MENU SETTIN

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–16 Table J-8 – ITA Waveform Masks (Reference Modulator) DMD2050E MENU SE

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–17 Table J-9 – ITA Waveform Masks (Reference Demodulator) DMD2050E MENU

DMD2050E Universal Product Modem Introduction MN-DMD2050E Revision 2 1– 2 The DMD2050E supports a full range of Industry Standard Interfaces that i

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–18 Figure J-7 - Initial Setup DMD2050E, Modulator ITA

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–19 Figure J-8 - Initial Setup DMD2050E, Demodulator ITA To setup ITA Mo

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–20 Figure J-9- Initial Setup DMD2050E, Modulator ITA (Enabled)

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–21 Figure J-10 - Initial Setup DMD2050E, Demodulator ITA (Enabled)

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–22 Figure J-11 –DMD2050E I/Q for BPSK 2/3

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–23 Figure J-12 –DMD2050E ITA Status for QPSK 2/3

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–24 Figure J-13 –DMD2050E I/Q for QPSK 2/3

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–25 Figure J-14 –DMD2050E ITA Status for 16APSK 1/2

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–26 Figure J-15 –DMD2050E I/Q for 16APSK 1/2

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–27 Figure J-16 –DMD2050E ITA Status for 8PSK 3/4

DMD2050E Universal Product Modem Introduction MN-DMD2050E Revision 2 1– 3 • Switchable between spur-free 70/140 MHz and L-Band operations • AC or

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–28 Figure J-17 –DMD2050E I/Q for 8PSK 3/4

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–29 Figure J-18 –DMD2050E ITA Status for 16APSK 7/8

DMD2050E Universal Satellite Modem ITA Operation MN-DMD2050E Revision 2 J–30 Figure J-19 –DMD2050E I/Q for 16APSK 7/8 At this point changing the

Copyright © Comtech EF Data, 2011. All rights reserved. Printed in the USA. Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.

Licensed Software Revision 0 TRANSEC Module AD-TRANSEC-LICNS 2 GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991

Licensed Software Revision 0 TRANSEC Module AD-TRANSEC-LICNS 3 either of that version or of any later version published by the Free Software Founda

Licensed Software Revision 0 TRANSEC Module AD-TRANSEC-LICNS 4 writing it). Whether that is true depends on what the Library does and what the pro

Licensed Software Revision 0 TRANSEC Module AD-TRANSEC-LICNS 5 It is not the purpose of this section to induce you to infringe any patents or other

Licensed Software Revision 0 TRANSEC Module AD-TRANSEC-LICNS 6 * This can be in the form of a textual message at program startup or * in document

Licensed Software Revision 0 TRANSEC Module AD-TRANSEC-LICNS 7 Darren Tucker Sun Microsystems The SCO Group * Redistribution and use in sou

DMD2050E Universal Product Modem Introduction MN-DMD2050E Revision 2 1– 4 1.2.4 Interfaces Industry-standard interfaces include: • MIL-188-114 (

Licensed Software Revision 0 TRANSEC Module AD-TRANSEC-LICNS 8 This page is intentionally blank.

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DMD2050E Universal Product Modem Introduction MN-DMD2050E Revision 2 1– 5 1.2.7.1 Dimensional Envelope

DMD2050E Universal Product Modem Introduction MN-DMD2050E Revision 2 1– 6 1.3 Configurations and Options The DMD2050E has several configuration p

MN-DMD2050E Revision 2 2–1 Chapter 2. Installation 2.1 Unpacking and Inspection CAUTION Do not damage the carton contents with a cutting tool.

DMD2050E Universal Satellite Modem Installation MN-DMD2050E Revision 2 2–2 2.2 Installation Safety The unit is shipped fully assembled. Do not r

DMD2050E Universal Satellite Modem Installation MN-DMD2050E Revision 2 2–3 2.3.1 Location The unit is intended for indoor use only. Do not instal

ER-DMD2050E-EA2 Rev - PLM C-0028800 Blank Page

DMD2050E Universal Satellite Modem Installation MN-DMD2050E Revision 2 2–4 2.3.5 Cables To meet EMC directives, make sure to use shielded cables

DMD2050E Universal Satellite Modem Installation MN-DMD2050E Revision 2 2–5 IMPORTANT Strap Code 26 can set the following modem configuration. T

DMD2050E Universal Satellite Modem Installation MN-DMD2050E Revision 2 2–6 BLANK PAGE

MN-DMD2050E Revision 2 3–1 Chapter 3. Theory of Operation 3.1 DMD2050E Hardware The DMD2050E is based on a two printed circuit card (minimum con

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–2 3.1.1 DMD2050E L-Band/IF Printed Circuit Card The L-Band/IF Pri

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–3 3.1.2 DMD2050E Baseband Processing Printed Circuit Card The adv

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–4 Figure 3-3. DMD2050E Baseband Processing Card Block Diagram The

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–5 The M&C System is based on a powerful microprocessor with a

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–6 Figure 3-4. DMD2050E Universal Satellite Modem Functional Block

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–7 The Reed-Solomon Encoder, encodes the data into Reed-Solomon Blo

ER-DMD2050E-EB2 Rev - PLM C-0028804 Errata B for MN-DMD2050E Rev 2 Comtech EF Data Documentation Update Subject: Chapter 3 and Chapter 4 refe

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–8 • Modem Status, Alarms & Contact Closures (Section 3.2.9) 3

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–9 3.2.8 Ethernet M&C Port This port is dedicated for Ethernet

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–10 3.3 Internal Clock The time and date is kept in order to ‘tim

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–11 Figure 3-5. Loopback Functional Block Diagram

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–12 Figure 3-6. Loopback Functional Block Diagram

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–13 Figure 3-7. Loopback Functional Block Diagram 3.5 DMD2050E Cl

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–14 SDTTTx CLKSRCHigh Stability OscillatorSTCLOCK & DATAEXT REF

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–15 3.5.2.1 SCTE: Serial Clock Transmit External The SCTE clock is

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–16 3.5.3 RX Buffer Clock Options The modem supports a number of

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–17 3.5.3.3 SCT: Serial Clock Transmit If SCT clock is selected

DMD2050E Universal Satellite Modem User Interfaces MN-DMD2050E Revision 2 4–31 4.4.6.6 SNMP (menu) A description of OID organization is provided

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–18 3.6 Transmit Timing Options As shown in Figure 3-7, Transmit T

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–19 3.6.4 Ethernet Data Interface (Optional) The modem support a s

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–20 3.8 Ebem Framing Unit The DMD2050E EBEM framing Unit provides

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–21 3.10 FIPs TRANSEC Module The DMD2050E FIPS Security Module pro

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–22 IdleWaiting for Embedded ChannelTX OFFEvent: TX ONAction: NoneW

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–23 IdleWaiting for Key RolloverStartupEvent: Key Agreement Messag

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–24 3.10.1.2 Key Agreement Algorithm The key agreement algorithm

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–25 After you have enabled Encryption from the front panel, set up

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–26 Figure 3-12. DMD2050E Handheld Key Loader 3.11 DoubleTalk Car

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–27 3.11.1 What is DoubleTalk Carrier-in-Carrier? The DMD2050E Do

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–8  Modem Status, Alarms & Contact Closures (Section 3.2.9) 3

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–28 • The transponder needs to be “bent-pipe” – meaning no on-boar

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–29 Figure 3-13. Conceptual Block Diagram In a number of ways, CnC

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–30 • The ratio of power spectral density is normally less than 11

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–31 Figure 3-11 shows the same link using the DMD2050E equipped wi

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–32 Traditional Full Duplex Link Duplex Link with Doub

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–33 QPSK 3/4 1.50 3.00 QPSK 7/8 1.75 3.50 8-QAM 2/3 2.00 4.00

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–34 Figure 3-17. DoubleTalk Carrier-in-Carrier Signals Referring t

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–35 Unwanted interfering signal suppression of 30 dB or more has be

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–36 involves trying different FEC and modulation combinations with

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–37 Carrier-in-Carrier link design involved trying different Modul

ER-DMD2050E-EB2 Rev - PLM C-0028804 Blank Page

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–38 Link parameters and LST summary for QPSK, LDPC 2/3 with Carrier

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–39 The link budget summary for the different MODCOD combinations i

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–40 While the traditional link was based on QPSK, TPC 3/4 and requi

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–41 3.11.9.3 Power Limited Links Carrier-in-Carrier can provide su

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–42 Whereas the original link used 8-PSK TPC 3/4, the Carrier-in-Ca

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–43 Step Procedure 1c Make sure CnC function is OFF at both sites.

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–44 3.11.11 Validating Carrier-in-Carrier Performance Carrier-in-C

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–45 3.11.12 Operational References 3.11.12.1 Carrier-in-Carrier L

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–46 3.11.12.2 Estimating PSD Ratio PSD can be estimated from a lin

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–47 3.11.12.4 Estimating PSD Ratio from Satmaster 3.11.12.5 Esti

Copyright © Comtech EF Data, 2013. All rights reserved. Printed in the USA. Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–48 3.11.13 DoubleTalk Carrier-in-Carrier Specifications Operatin

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–49 3.11.14 Carrier-in-Carrier Summary Comtech EF Data’s DoubleTal

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–50 Leased bandwidth Almost all satellite operators charge for the

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–51 C/N = C/No – 10 log B [where B is bandwidth in Hz] Eb/No = C/No

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–52 exhibits inherently low decoding latency compared with TCC, and

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–53 It can be seen from this graph that, for Code Rates above 3/4,

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–54 Mode Code Rate/Modulation Lower Data Rate Limit (kbps) Upper Da

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–55 Table 3-3. Comparison of all Comtech EF Data TPC and LDPC Modes

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–56 3.12.2 TPC and LDPC Summary FOR AGAINST Exceptionally good BE

DMD2050E Universal Satellite Modem Theory of Operation MN-DMD2050E Revision 2 3–57 When the signal is received and demodulated by the Receiving Mo