Radyne DMD20LBST Spezifikationen

Part Number MN-DMD20-20LBST Revision 14 Comtech EF Data is an AS9100 Rev B / ISO9001:2000 Registered Company IMPORTANT NOT

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–6 Modulation Code Rate Min Data Rate Max Data Rate

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–38 3.15.8.3 Power Limited Links Carrier-in-Carrier can pro

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–39 3.15.9 Carrier-in-Carrier Commissioning and Deployment

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–40 3.15.10 Validating Carrier-in-Carrier Performance Carri

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–41 3.15.11 Operational References 3.15.12 Carrier-in-Carr

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–42 3.15.13 Estimating PSD Ratio PSD can be estimated from

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–43 3.15.13.2 Estimating PSD Ratio from Satmaster 3.15.13.

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–44 3.15.14 DoubleTalk Carrier-in-Carrier Specifications Op

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–45 Power Equivalent Bandwidth Power Equivalent Bandwidth (P

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–46 Co+No/No Carrier Density (Co) + Noise (No) to Noise Den

MN-DMD20-20LBST Revision 14 4–1 Chapter 4. USER INTERFACES 4.1 User Interfaces This section contains information pertaining to the user interfaces

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–7 Modulation Code Rate Min Data Rate Max Data Rate

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–2 Figure 4-1 DMD20 Front Panel Figure 4-2 DMD2

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–3 4.2.1 LCD Front Panel Display The front panel display is a 2

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–4 4.2.4 Front Panel LED Indicators Twelve LEDs on the Front Pa

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–5 Figure 4-3 Entering New Parameters Following a valid input,

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–6 4.4.2 Modulator Menu Options and Parameters NETWORK SPEC {

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–7 DVB: Per EN301-421 & En301-210 Data Rates: All Rate

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–8 MODULATION {BPSK, QPSK, OQPSK, 8PSK, 16QAM, 8QAM} Allows

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–9 IN-BAND RATE {150, 300, 600, 1200, 2400, 4800, 9600, 192

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–10 option if the BUC does not support FSK or if the customer do

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–11 HI ALARM THRSH {0.00 Volts} Allows user to select high ala

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–8 188 Mode Modulation Code Rate Min Data Rate Max

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–12 AUPC (menu) LOCAL AUPC (menu) The 'LOCAL AUPC CONFIG

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–13 RADYNE: When configured for Radyne AUPC, the maximum Tran

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–14 AUPC MODE {DISABLE,NEAR SIDE, EFDATA} Allows the user to

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–15 4.4.3 Demodulator Menu Options and Parameters NETWORK SPEC

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–16 Closed Net: All possible combinations allowed, however, a

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–17 REACQ RANGE (Hz) {0 – 65535 Hz} Allows the user to se

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–18 ROTATION AMBIG {n (x.x.x)}, n=0..7, x=0 or 1 (8PSK Onl

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–19 BPSK SYMB PAIR {NORMAL, SWAPPED} Allows the user to swa

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–20 HI ALARM THRSH {0.00 Amps} Allows user to select high alarm

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–21 any lower priority traffic. With this setting, the lower pri

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–9 7.20 BER Specifications 7.20.1 BER Performance (Vi

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–22 ESC CHAN#1 (dB) {-20 to +10 dB} Allows user to se

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–23 TX ACT, RX ACT, TX EDIT, RX EDIT, USER 1 - USER 8, ROM 1 -R

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–24 REF FREQ SRC {INTERNAL, EXTERNAL, HIGH STABILITY} Allo

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–25 ES BAUDRATE {150 – 1024} For IBS ES to ES {150 – 19

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–26 TOTAL PACKETS Displays the total number of Ethernet packet

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–27 +12V SUPPLY Displays the measured voltage of the +12 Volt

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–28 4.4.6 Alarms Menu Options and Parameters Masking alarms m

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–29 TX MINOR (menu) TERR CLK ACT {Pass/Fail, Unmasked/Ma

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–30 RX MAJOR (menu) FPGA CFG {Pass/Fail, Unmasked/Masked}

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–31 RX MINOR (menu) BUFF UNDERFLOW {Pass/Fail, Unmasked/

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–10 7.20.2 BER Performance (Sequential) Figure 7-2 D

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–32 IBS BER {Pass/Fail, Unmasked/Masked} Indicates

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–33 -12V SUPPLY {Pass/Fail, Unmasked/Masked} Displa

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–34 RX MAJOR (menu) FPGA CFG DSP CFG SIGNAL LOC

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–35 RX AGC LEVEL RX LEVEL IBS BER RX DVB FRM

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–36 IDR1 SAT ALARM 3 {PASS, FAIL} IDR1 SAT ALARM 4 {PAS

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–37 FRONT PANEL (menu) BKLT LEVEL {OFF, LOW, MED, HIGH}

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–38 TCP/IP (menu) BOOT MODE {DEFAULT, NON-VOL, BOOTP, IP TES

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–39 SERVER IP ADDR {XXX.XXX.XXX.XXX} Hexidecimal Address

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–40 The dev context allows a user with appropriate authenticatio

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–41 WEB CONFIRMATION {ENABLE, DISABLE} USER 1 ACCESS

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–11 7.20.3 BER Performance (Viterbi with Reed-Solomon)

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–42 front panel. The user can clear all characters from the fron

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–43 Only the appropriate of the VCO adjustment screens listed

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–44 CNC DEBUG REGS1 Used for factory test only. CNC DEBUG

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–45 D&I AUPC 8PSK 16QAM TURBO 52 MBPS OM

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–46 IF: IF loopback loops the IF output of the Modulator to t

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–47 4.5 Terminal Mode Control The Terminal Mode Control allows

DMD20/20LBST Universal Satellite Modem User Interfaces MN-DMD20-20LBST Revision 14 4–48 4.6 Terminal Port User Interface The Remote Port (J20) of t

MN-DMD20-20LBST Revision 14 5–1 Chapter 5. REAR PANEL INTERFACES This section discusses the electrical interfaces available from the rear panel. Al

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–2 Figure 5-1 DMD20 Universal Satellite Modem Rear Pane

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–3 Figure 5-2 DMD20LBST Universal Satellite Modem Rear

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–12 7.20.4 BER Performance (Turbo) Figure 7-4 DMD20/

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–4 5.2 Compact Flash The compact flash slot is located o

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–5 5.4.4 RX IF The Receive IF Input Port is a 75-Ohm Fe

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–6 Note 2: Prompt alarms can be configured to support a s

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–7 5.4.10 EIA-530 (J19) The EIA-530 Port is an RS-422/V.

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–8 5.4.11 REMOTE (J20) The Remote Port is a RS-485 or RS

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–9 5.5 DMD20 LBST Chassis Connections (Standard) 5.5.1

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–10 Table 5-6. ALARM Port 15-Pin Female “D” Connector (J

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–11 5.5.8 EIA-530 (J19) The EIA-530 Port is an RS-422/V.

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–12 5.5.9 REMOTE (J20) The Remote Port is a RS-485 or RS

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–13 5.8 G.703 IDR/IBS Interface (Optional) The DMD20 sup

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–13 7.20.5 BER Performance (8PSK Trellis) Figure 7-5

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–14 5.8.2 64K AUDIO (J2) The 64K AUDIO Port allows for c

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–15 5.8.3 8K DATA (J3) The 8K Data Port allows for commu

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–16 5.8.4 G.703 BAL (J4) The G.703 Interface Port (Balan

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–17 5.8.5 SWITCH INTERFACE (J5) The Switch Interface Por

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–18 Table 5-10. SWITCH INTERFACE Port 68-Pin High-Densit

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–19 Table 5-10. SWITCH INTERFACE Port 68-Pin High-Densit

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–20 5.8.6 SD (DDI) (J6) The Send Data (Drop Data In) Por

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–21 5.10 High-Speed Serial Interface (HSSI) (Optional) 5

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–22 5.11.3 DVB/M2P IN (J3) DVB or M2P IN Port (J3) is su

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–23 Table 5-12b. J3 − M2P In - 25-Pin Female Pin Number

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–14 7.20.6 BER Performance (8PSK Turbo) Figure 7-6 D

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–24 5.11.4 DVB/M2P OUT (J4) The DVB or M2P OUT Port (J4)

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–25 Table 5-13b. J3 - M2P Out – 25-Pin Female ‘D’ Sub Co

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–26 5.12 Ethernet Data Interface (Optional) The optional

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–27 5.13.1 64K AUDIO (J2) The 64K AUDIO Port allows for

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–28 5.13.2 8K DATA (J3) The 8K Data Port allows for comm

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–29 5.13.4 ESC ALARM (J5) The ESC (Engineering Service C

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–30 5.13.8 SD (IDO) (J9) The Send Data (Insert Data Out)

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–31 5.15 Ethernet Data Interface The optional Ethernet D

DMD20/20LBST Universal Satellite Modem Rear Panel Interfaces MN-DMD20-20LBST Revision 14 5–32 5.16 GigE Interface The optional Ethernet Data Inter

MN-DMD20-20LBST Revision 14 6–1 Chapter 6. MAINTENANCE AND TROUBLESHOOTING This section discusses unit maintenance and troubleshooting for the Unive

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–15 7.20.7 BER Performance (16QAM Viterbi) Figure 7-7

DMD20/20LBST Universal Satellite Modem Maintenance and Troubleshooting MN-DMD20-20LBST Revision 14 6–2 Symptom Possible Cause The Modem will not ac

DMD20/20LBST Universal Satellite Modem Maintenance and Troubleshooting MN-DMD20-20LBST Revision 14 6–3 6.2.1.2 Major Rx Alarms Alarm Possible Caus

DMD20/20LBST Universal Satellite Modem Maintenance and Troubleshooting MN-DMD20-20LBST Revision 14 6–4 6.2.1.4 Minor Rx Alarms Alarm Possible Caus

DMD20/20LBST Universal Satellite Modem Maintenance and Troubleshooting MN-DMD20-20LBST Revision 14 6–5 6.2.1.5 Drop and Insert Alarms Alarm Possib

DMD20/20LBST Universal Satellite Modem Maintenance and Troubleshooting MN-DMD20-20LBST Revision 14 6–6 6.2.2 Alarm Masks The modem performs a high

DMD20/20LBST Universal Satellite Modem Maintenance and Troubleshooting MN-DMD20-20LBST Revision 14 6–7 6.2.2.2 Latched Alarms Latched Alarms are us

DMD20/20LBST Universal Satellite Modem Maintenance and Troubleshooting MN-DMD20-20LBST Revision 14 6–8 Table 6-1. IBS Fault Conditions and Actions

MN-DMD20-20LBST Revision 14 7–1 Chapter 7. TECHNICAL SPECIFICATIONS 7.1 Data Rates Refer to Section 7.18. 7.2 Modulator Modulation BPSK, QPSK, an

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–2 LDPC/TPC (Optional) LDPC (BPSK) {1/2}

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–3 Decoder Options Reed-Solomon INTELSAT (DVB Optional

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–16 7.20.8 BER Performance (16QAM Viterbi with Reed-So

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–4 7.10 High-Speed Serial Interface (HSSI) HSSI: HSSI

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–5 7.17 Environmental Prime Power 100 to 240 VAC, 50

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–6 Modulation Code Rate Min Data Rate Max Data Rate

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–7 Modulation Code Rate Min Data Rate Max Data Rate

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–8 188 Mode Modulation Code Rate Min Data Rate Max

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–9 7.20 BER Specifications 7.20.1 BER Performance (Vi

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–10 7.20.2 BER Performance (Sequential) Figure 7-2 B

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–11 7.20.3 BER Performance (Viterbi with Reed-Solomon)

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–12 7.20.4 BER Performance ((O)QPSK Turbo) Figure 7-4

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–13 7.20.5 BER Performance (B/O/QPSK Turbo) Figure 7-

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–17 7.20.9 BER Performance (16QAM Turbo) Figure 7-9

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–14 7.20.6 BER Performance (8PSK Turbo) Figure 7-6 B

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–15 7.20.7 BER Performance (8PSK Trellis) Figure 7-7

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–16 7.20.8 BER Performance (8PSK Turbo) Figure 7-8 8

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–17 7.20.9 BER Performance (16QAM Viterbi) Figure 7-9

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–18 7.20.10 BER Performance (16QAM Viterbi with Reed-S

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–19 7.20.11 BER Performance (16QAM Turbo) Figure 7-11

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–20 7.20.12 BER Performance (16QAM Turbo) Figure 7-12

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–21 7.20.13 1/2 Rate B/O/QPSK BER Performance (LDPC)

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–22 7.20.14 2/3 Rate Q/8PSK/8QAM BER Performance (LDPC

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–23 7.20.15 3/4 Rate Q/8PSK, 8/16QAM BER Performance (

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–18 7.20.10 BER Performance ((O)QPSK Turbo) Figure 7

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–24 1/2 Rate 3/4 Rate 7/8 Rate 1/2 Rate 3/4 Rate 7/

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–25 Turbo 0.495 Turbo 0.793 Turbo 0.495

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–26 3/4 Rate 7/8 Rate 3/4 Rate 7/8 Rate

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–27 Turbo 1/2 Turbo 3/4 Turbo 7/8 T

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–28 Table 7-16. Open Network Performance B

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–29 Figure 7-16 AGC Voltage Monitor

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–30 BLANK PAGE

MN-DMD20-20LBST Revision 14 A–1 Appendix A. Product Options A.1 Hardware Options The following enhanced interface cards are available. A.2 G.703/

DMD20/20LBST Universal Satellite Modem Product Options MN-DMD20-20LBST Revision 14 A–2 A.9 Gigi Ethernet Data Interface Three RJ-45, Auto-Crossover

MN-DMD20-20LBST Revision 14 B–1 Appendix B. Front Panel Upgrade Procedure B.1 Introduction The Universal Satellite Modem offers the ability to per

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–19 7.20.11 BER Performance (BPSK Turbo) Figure 7-11

DMD20/20LBST Universal Satellite Modem Front Panel Upgrade Procedure MN-DMD20-20LBST Revision 14 B–2 KEY CODE REQ indicates that the desired option

DMD20/20LBST Universal Satellite Modem Front Panel Upgrade Procedure MN-DMD20-20LBST Revision 14 B–3 B.4 Demonstration Procedure The procedure for

DMD20/20LBST Universal Satellite Modem Front Panel Upgrade Procedure MN-DMD20-20LBST Revision 14 B–4 2. Contact Comtech with the Unit ID and Reque

DMD20/20LBST Universal Satellite Modem Front Panel Upgrade Procedure MN-DMD20-20LBST Revision 14 B–5 B.4.1 Running in Demonstration Mode Because of

DMD20/20LBST Universal Satellite Modem Front Panel Upgrade Procedure MN-DMD20-20LBST Revision 14 B–6 B.4.2 Canceling Demonstration Mode At any time,

MN-DMD20-20LBST Revision 14 C–1 Appendix C. Carrier Control C.1 States The transmitter will turn off the carrier output automatically when the mod

DMD20/20LBST Universal Satellite Modem Carrier Controls MN-DMD20-20LBST Revision 14 C–2 C.5 Carrier VSat Modulator output is turned off before repr

MN-DMD20-20LBST Revision 14 D–1 Appendix D. Strap Codes D.1 Strap Codes The Strap Code is a quick set key that sets many of the modem parameters.

DMD20/20LBST Universal Satellite Modem Strap Codes MN-DMD20-20LBST Revision 14 D–2 Table D-1. Strap Codes Dis = Disable Strap Code (Decimal) Data

DMD20/20LBST Universal Satellite Modem Strap Codes MN-DMD20-20LBST Revision 14 D–3 Table D-1. Strap Codes Dis = Disable Strap Code (Decimal) Data

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–20 7.20.12 BER Performance (8PSK Turbo) Figure 7-12

DMD20/20LBST Universal Satellite Modem Strap Codes MN-DMD20-20LBST Revision 14 D–4 Table D-1. Strap Codes Dis = Disable Strap Code (Decimal) Data

DMD20/20LBST Universal Satellite Modem Strap Codes MN-DMD20-20LBST Revision 14 D–5 Table D-1. Strap Codes Dis = Disable Strap Code (Decimal) Data

DMD20/20LBST Universal Satellite Modem Strap Codes MN-DMD20-20LBST Revision 14 D–6 D.2.1 Operational Case Examples For best results always begin s

DMD20/20LBST Universal Satellite Modem Strap Codes MN-DMD20-20LBST Revision 14 D–7 Demodulator: Method 1 - Under Interface Menu: Set Interfa

DMD20/20LBST Universal Satellite Modem Strap Codes MN-DMD20-20LBST Revision 14 D–8 Demodulator: Method 1 - Under Interface Menu: Set Interfac

DMD20/20LBST Universal Satellite Modem Strap Codes MN-DMD20-20LBST Revision 14 D–9 Demodulator: Method 1 - Under Interface Menu: Set Interface

DMD20/20LBST Universal Satellite Modem Strap Codes MN-DMD20-20LBST Revision 14 D–10 BLANK PAGE

MN-DMD20-20LBST Revision 14 E–1 Appendix E. TCP/IP Ethernet Setup E.1 Introduction The modem supports SNMP, FTP protocols and the Web Browser. Uti

DMD20/20LBST Universal Satellite Modem TCP/IP Ethernet Setup MN-DMD20-20LBST Revision 14 E–2 d. IP TEST: The IP Test selection is similar in behavi

DMD20/20LBST Universal Satellite Modem TCP/IP Ethernet Setup MN-DMD20-20LBST Revision 14 E–3 E.3 Network Configuration Summary If the above steps w

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–21 7.20.13 BER Performance (16QAM Turbo) Figure 7-13

DMD20/20LBST Universal Satellite Modem TCP/IP Ethernet Setup MN-DMD20-20LBST Revision 14 E–4 The Computer TCP/IP must be properly configured in orde

DMD20/20LBST Universal Satellite Modem TCP/IP Ethernet Setup MN-DMD20-20LBST Revision 14 E–5 complete the PC Configuration. Note: some computers ma

DMD20/20LBST Universal Satellite Modem TCP/IP Ethernet Setup MN-DMD20-20LBST Revision 14 E–6 E.4.3 Testing the Ethernet connection using the Ping P

MN-DMD20-20LBST DMD20/20LBST Universal Satellite Modem F–1 Appendix F. WEB INTERFACE SETUP GUIDE F.1 Introduction The web interface lets Radyne

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–2 F.2.2 IP Address IMPORTANT Before you set an IP ad

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–3 F.3.2 User Account Data IMPORTANT All entries are

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–4 IMPORTANT All entries are case-sensitive. To set up

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–5 F.2 Reset a User Account Sometimes, it is necessary

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–6 F.4 Equipment Website Once you know that the modem i

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–7 The Introduction page shows general information, such

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–22 7.20.14 B/O/QPSK BER Performance (LDPC) Figure 7-

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–8 F.5 Web Page Appearance This page displays the Monit

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–9 F.6 Configure Web Browsers for the Radyne WEB Inter

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–10 F.6.2.1 Change the encoding: Click View on the Fire

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–11 F.6.2.2 Install the Internet Explorer Tab V2 add-on

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–12 F.6.3 Configure Chrome for the Radyne WEB Browser W

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–13 F.6.3.1 Change the encoding On the Chrome address b

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–14 F.6.3.2 Install the Internet Explorer Tab for Chrom

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–15 F.6.4 Configure Safari for the Radyne WEB Browser

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–16 F.6.4.2 Reset the Ethernet M&C port To reset th

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–17 On the Monitor & Control, Password Setup or IP A

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–23 7.20.15 8PSK/8QAM BER Performance (LDPC) Figure 7

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–18 F.6.4.4 Change the encoding Click View on the Safar

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–19 F.6.5 Configure Maxthon for the Radyne WEB Browser

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–20 F.6.5.1 Change the browser mode Two browser modes a

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–21 F.6.5.2 Change the encoding On the Monitor & Co

DMD20/20LBST Universal Satellite Modem Web Browser Setup Guide MN-DMD20-20LBST Revision 14 F–22 BLANK PAGE

MN-DMD20-20LBST Revision 14 G–1 Appendix G. AUPC Operation G.1 Automatic Uplink Power Control (AUPC Operation) The modem has an optional built-in

DMD20/20LBST Universal Satellite Modem AUPC Operation MN-DMD20-20LBST Revision 14 G–2 G.1.2 EF AUPC In EF AUPC mode, the Target Eb/No indicates the

DMD20/20LBST Universal Satellite Modem AUPC Operation MN-DMD20-20LBST Revision 14 G–3 The AUPC Menu Functions and their descriptions are shown on Ta

DMD20/20LBST Universal Satellite Modem AUPC Operation MN-DMD20-20LBST Revision 14 G–4 BLANK PAGE

MN-DMD20-20LBST Revision 14 H–1 Appendix H. Drop and Insert (D&I) H.1 Drop and Insert (D&I) The Drop and Insert (D&I) function provide

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–24 7.20.16 16QAM BER Performance (LDPC) Figure 7-16

DMD20/20LBST Universal Satellite Modem Drop and Insert (D&I) MN-DMD20-20LBST Revision 14 H–2 Figure H-1 Looped Modems Figure H-2 Looped Mod

DMD20/20LBST Universal Satellite Modem Drop and Insert (D&I) MN-DMD20-20LBST Revision 14 H–3 H.1.1 Drop Only When Drop is enabled and Insert is

DMD20/20LBST Universal Satellite Modem Drop and Insert (D&I) MN-DMD20-20LBST Revision 14 H–4 H.1.3 Mode Selection D&I can be easily configur

DMD20/20LBST Universal Satellite Modem Drop and Insert (D&I) MN-DMD20-20LBST Revision 14 H–5 H.1.3.5 T1-D4/T1-D4-S The T1-D4 Mode of Operation

DMD20/20LBST Universal Satellite Modem Drop and Insert (D&I) MN-DMD20-20LBST Revision 14 H–6 H.1.5 Drop and Insert Mapping The following display

DMD20/20LBST Universal Satellite Modem Drop and Insert (D&I) MN-DMD20-20LBST Revision 14 H–7 4. Use the Up or Down Arrow Key to until the righ

DMD20/20LBST Universal Satellite Modem Drop and Insert (D&I) MN-DMD20-20LBST Revision 14 H–8 H.2 Configuring the Modem for Drop and Insert Seve

DMD20/20LBST Universal Satellite Modem Drop and Insert (D&I) MN-DMD20-20LBST Revision 14 H–9 H.2.2 Operational Network Specification The Network

DMD20/20LBST Universal Satellite Modem Drop and Insert (D&I) MN-DMD20-20LBST Revision 14 H–10 H.2.4 D&I Sample Configurations and D&I Cl

DMD20/20LBST Universal Satellite Modem Drop and Insert (D&I) MN-DMD20-20LBST Revision 14 H–11 Under Demodulator: Set Network Spec. = Drop &a

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–25 1/2 Rate 3/4 Rate 7/8 Rate 1/2 Rate 3/4 Rat

DMD20/20LBST Universal Satellite Modem Drop and Insert (D&I) MN-DMD20-20LBST Revision 14 H–12 Figure H-8 Single Truck Figure H-9 Rx Only Wi

DMD20/20LBST Universal Satellite Modem Drop and Insert (D&I) MN-DMD20-20LBST Revision 14 H–13 H.3 D&I Maps and Map Editing The Drop and Ins

DMD20/20LBST Universal Satellite Modem Drop and Insert (D&I) MN-DMD20-20LBST Revision 14 H–14 Table H-2. D&I ROM Maps ROM Map T1/E1 Time S

DMD20/20LBST Universal Satellite Modem Drop and Insert (D&I) MN-DMD20-20LBST Revision 14 H–15 ROM Map 2 could be used as the template for an Act

DMD20/20LBST Universal Satellite Modem Drop and Insert (D&I) MN-DMD20-20LBST Revision 14 H–16 BLANK PAGE

MN-DMD20-20LBST Revision 14 I–1 Appendix I. Efficient Drop and Insert (D&I) I.1 Introduction The menu structure and procedure to configure a mo

DMD20/20LBST Universal Satellite Modem Efficient Drop & Insert MN-DMD20-20LBST Revision 14 I–2 I.3 Efficient Drop & Insert Mode With Effici

DMD20/20LBST Universal Satellite Modem Efficient Drop & Insert MN-DMD20-20LBST Revision 14 I–3 I.3.1 Calculating the Required Satellite Bandwid

DMD20/20LBST Universal Satellite Modem Efficient Drop & Insert MN-DMD20-20LBST Revision 14 I–4 I.3.4.1 Summary and Examples: These examples ill

DMD20/20LBST Universal Satellite Modem Efficient Drop & Insert MN-DMD20-20LBST Revision 14 I–5 Example 2a: 10 Drop Slots with T1-D4 framing, sta

ER-DMD20LBS-EA14 Rev - PLM C-0026230 Errata A for MN-DMD20-20LBST Rev 14 Comtech EF Data Documentation Update Subject: Chapter 7, Technical S

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–26 2/3 Rate 2/3 Rate w/RS 2/3 Rate 2/3 Rate w/

DMD20/20LBST Universal Satellite Modem Efficient Drop & Insert MN-DMD20-20LBST Revision 14 I–6 BLANK PAGE

MN-DMD20-20LBST Revision 14 J–1 Appendix J. Ethernet Data Interface Setup J.1 Configure the modem to use the Ethernet Data Interface (Optional) Whe

DMD20/20LBST Universal Satellite Modem Ethernet Data Interface Setup MN-DMD20-20LBST Revision 14 J–2 J.1.1.1 Half-Duplex Flow Control In half-duple

DMD20/20LBST Universal Satellite Modem Ethernet Data Interface Setup MN-DMD20-20LBST Revision 14 J–3 When Strict Priority is selected, the interface

DMD20/20LBST Universal Satellite Modem Ethernet Data Interface Setup MN-DMD20-20LBST Revision 14 J–4 J.1.6 Packet Statistics The following statisti

METRIC CONVERSIONS Units of Length Unit Millimeter Centimeter Inch Foot Yard Meter Kilometer Mile 1 millimeter 1 0.1 0.0394 0.0033 0.0

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

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–27 Turbo 0.495 Turbo 0.793 Turbo 0.495 Turbo 0

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–28 3/4 Rate 7/8 Rate 3/4 Rate 7/8 Rate1E-3

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–29 7.20.17 AGC Output Voltage The AGC Output Voltage

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–30 BLANK PAGE ER-DMD20LBS-EA14 Rev -

ER-DMD20LBS-EB14 Rev - PLM C-0028800 Errata B for MN-DMD20-20LBST Rev 14 Comtech EF Data Documentation Update Subject: Chapter 3, Theory of O

ER-DMD20LBS-EB14 Rev - PLM C-0028800 Blank Page

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

BLANK PAGE

iii Table of Contents CHAPTER 1. INTRODUCTION ... 1–1 1.1 Overview

ER-DMD20LBS-EA14 Rev - PLM C-0026230 Blank Page

Table of ContentsTable of Contents Revision 14 DMD20/DMD20LBST Universal Satellite Modem MN-DMD20-20LBST iv 3.3.4 Modem Monitor Status ...

Table of ContentsTable of Contents Revision 14 DMD20/DMD20LBST Universal Satellite Modem MN-DMD20-20LBST v 3.15.4 System Functionality and Operatio

Table of ContentsTable of Contents Revision 14 DMD20/DMD20LBST Universal Satellite Modem MN-DMD20-20LBST vi 4.5.2 Modem Setup for Terminal Mode ...

Table of ContentsTable of Contents Revision 14 DMD20/DMD20LBST Universal Satellite Modem MN-DMD20-20LBST vii 5.8.3 8K DATA (J3) ...

Table of ContentsTable of Contents Revision 14 DMD20/DMD20LBST Universal Satellite Modem MN-DMD20-20LBST viii 6.2.2 Alarm Masks ...

Table of ContentsTable of Contents Revision 14 DMD20/DMD20LBST Universal Satellite Modem MN-DMD20-20LBST ix 7.19.2 DVB ...

Table of ContentsTable of Contents Revision 14 DMD20/DMD20LBST Universal Satellite Modem MN-DMD20-20LBST x APPENDIX B. FRONT PANEL UPGRADE PROCEDUR

Table of ContentsTable of Contents Revision 14 DMD20/DMD20LBST Universal Satellite Modem MN-DMD20-20LBST xi F.2 Setup ...

Table of ContentsTable of Contents Revision 14 DMD20/DMD20LBST Universal Satellite Modem MN-DMD20-20LBST xii H.1.2 Insert Only ...

i PREFACE About this Manual This manual describes the installation and operation of the DMD20/DMD20LBST Universal Satellite Modem. Conventions and Re

MN-DMD20-20LBST Revision 14 7–1 Chapter 7. TECHNICAL SPECIFICATIONS 7.1 Data Rates Refer to Section 7.18. 7.2 Modulator Modulation BPSK, QPSK, and

DMD20/DMD20LBST Universal Satellite ModemPreface Revision 14 Preface MN-DMD20-20LBST ii Cautions and Warnings Safety Compliance EN 60950 Applica

DMD20/DMD20LBST Universal Satellite ModemPreface Revision 14 Preface MN-DMD20-20LBST iii Warranty Policy Comtech EF Data products are warranted agai

DMD20/DMD20LBST Universal Satellite ModemPreface Revision 14 Preface MN-DMD20-20LBST iv Customer Support Support Business Hours - Monday through Fri

MN-DMD20-20LBST Revision 14 1–1 Chapter 1. INTRODUCTION This chapter provides an overview of the DMD20/DMD20 LBST Universal Satellite Modem. The DM

DMD20/20LBST Universal Satellite Modem Introduction MN-DMD20-20LBST Revision 14 1–2 The DMD20 LBST (Figure 1-2) offers additional features that are

DMD20/20LBST Universal Satellite Modem Introduction MN-DMD20-20LBST Revision 14 1–3 Only authorized service personnel should handle and install opt

DMD20/20LBST Universal Satellite Modem Introduction MN-DMD20-20LBST Revision 14 1–4 BLANK PAGE

MN-DMD20-20LBST Revision 14 2–1 Chapter 2. INSTALLATION 2.1 Unpacking and Inspection Inspect shipping containers for damage. If shipping container

DMD20/20LBST Universal Satellite Modem Installation MN-DMD20-20LBST Revision 14 2–2 2.2 Installation Requirements The modem is shipped fully assemb

DMD20/20LBST Universal Satellite Modem Installation MN-DMD20-20LBST Revision 14 2–3 2.3 Removal and Assembly The Modem is shipped fully assembled.

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–2 LDPC/TPC (Optional) LDPC (BPSK) {1/2}

DMD20/20LBST Universal Satellite Modem Installation MN-DMD20-20LBST Revision 14 2–4 connection at all times. Therefore, it is imperative during inst

DMD20/20LBST Universal Satellite Modem Installation MN-DMD20-20LBST Revision 14 2–5 Standard Factory Configuration Settings Modulator: Data Rate:

DMD20/20LBST Universal Satellite Modem Installation MN-DMD20-20LBST Revision 14 2–6 2.6 Modulator Checkout The following descriptions assume that t

MN-DMD20-20LBST Revision 14 3–1 Chapter 3. THEORY OF OPERATION 3.1 Modem Hardware The modem is based on a two printed circuit card (minimum configu

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–2 3.1.1 L-Band/IF Printed Circuit Card The L-Band/IF Print

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–3 3.1.2 Baseband Processing Printed Circuit Card The adven

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–4 Figure 3-3 Universal Satellite Modem Functional Block D

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–5 3.2.3 Tx Baseband Processing The Tx Data and Clock enter

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–6 3.3.1 Terminal Port This port supports an asynchronous

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–7 3.3.4 Modem Monitor Status The modems M&C system is

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–3 Decoder Options Reed-Solomon INTELSAT (DVB Optional

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–8 3.6 Loopback Features (Terrestrial & IF) The modem p

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–9 Figure 3-4 Loopback Functional Block Diagram

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–10 Figure 3-5 Loopback Functional Block Diagram Figure 3

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–11 3.7 Clocking Options The modem supports a number of dif

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–12 The following paragraphs define the types of clocking op

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–13 The modem handles RX Buffer clock selections based on so

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–14 3.7.3 EXT REF: External Reference, Top BNC Port, J10 Th

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–15 The DMD20 & 20LBST supports Radyne HDLC and Comtech

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–16 3.9.3 Interleaving Interleaving depths of 4, 8, or 12 R

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–17 3.10 Asynchronous Overhead Operation (Framing/Multiplex

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–4 7.10 High-Speed Serial Interface (HSSI) HSSI: HSSI

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–18 Table 3-2 Kbps Baud Rate Example for Standard IBS Kbps B

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–19 3.12 Asynchronous Multiplexer Mode Since many of the f

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–20 In Pass Thru Mode, there is no formatting or deformatti

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–21 3.14.2 Aggregate Data Rate The aggregate data rate equa

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–22 3.14.4 Actual Overhead Rate Calculation The following i

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–23 3.14.5 SCC Overhead Channel Setup 1. Set the Framing M

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–24 SCC Overhead Chart Examples (Viterbi 3/4 w/V.35 Scrambl

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–25 3.15 DoubleTalk Carrier-in-Carrier Option Space segment

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–26 • Link must be full duplex. • A Radyne DMD20 must be u

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–27 4) Link Asymmetries: Various asymmetries in the forward

DMD20/20LBST Universal Satellite Modem Technical Specifications MN-DMD20-20LBST Revision 14 7–5 7.17 Environmental Prime Power 100 to 240 VAC, 50

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–28 3.15.3 Operational Recommendations The rules for CnC op

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–29 3.15.4 System Functionality and Operational Considerati

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–30 Figure 3-12. Same Link Using

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–31 One possible way to mitigate false peaks is to narrow th

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–32 Figure 3-14. DoubleTalk Carrier-in-Carrier Signals R

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–33 3.15.6 Margin Requirements Typical interfering signal c

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–34 3.15.8.1 Symmetric Data Rate Link Consider the followin

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–35 Link parameters and LST summary for QPSK, LDPC 2/3 with

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–36 The link budget summary for the different MODCOD combina

DMD20/20LBST Universal Satellite Modem Theory of Operation MN-DMD20-20LBST Revision 14 3–37 3.15.8.2 Asymmetric Data Rate Link As occupied (or allo