Comtech EF Data DMDVR20 LBST Rev 1.1 User Manual
Dmdvr20 lbst
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Table of contents
Document Outline
- Warranty Policy
- Preface
- Table of Contents
- Introduction
- Installation
- Theory of Operation
- 3.0 Modem Hardware
- 3.0.1 L-Band Printed Circuit Card
- 3.0.2 Baseband Processing Printed Circuit Card
- 3.0.3 Enhanced Interface Printed Circuit Card
- 3.1 Functional Block Diagram
- 3.1.1 Front Panel
- 3.1.2 Baseband Processing
- 3.1.3 Tx Baseband Processing
- 3.1.4 Rx Baseband Processing
- 3.2 Monitor & Control (M&C) Subsystem
- 3.2.1 Terminal Port (Supported in Rev B or greater)
- 3.2.2 Modem Remote Communications (RLLP)
- 3.2.3 Ethernet M&C Port (Not Supported)
- 3.2.4 Modem Monitor Status
- 3.3 Internal Clock
- 3.4 Loopback Features (Terrestrial)
- 3.5 Clocking Options
- 3.5.1 TX Clock Options
- 3.5.1.1 SCTE: Serial Clock Transmit External
- 3.5.1.2 SCT: Serial Clock Transmit
- 3.5.2 RX Buffer Clock Options
- 3.5.2.1 RX SAT Clock
- 3.5.3 EXT REF: External Reference, Top BNC Port, J10
- 3.6 RS530/422/V.35 Interface (Standard)
- 3.7 Reed-Solomon Codec (TX Only)
- 3.7.1 Reed-Solomon Operation
- 3.7.2 Reed-Solomon Code Rate
- 3.7.3 Interleaving
- 3.8 Locating the ID Code Operational Procedure
- 3.9 Strap Codes (TX Only Option)
- User Interfaces
- 4.0 User Interfaces
- 4.1 Front Panel User Interface
- 4.1.1 LCD Front Panel Display
- 4.1.2 Cursor Control Arrow Keys
- 4.1.3 Numeric Keypad
- 4.1.4 Front Panel LED Indicators
- 4.2 Parameter Setup
- 4.3 Front Panel Control Screen Menus
- 4.3.1 Main Menus
- 4.3.2 Modulator Menu Options and Parameters
- 4.3.3 Demodulator Menu Options and Parameters
- 4.3.4 Interface Menu Options and Parameters
- 4.3.5 Monitor Menu Options and Parameters
- 4.3.6 Alarms Menu Options and Parameters
- 4.3.7 System Menu Options and Parameters
- 4.3.8 Test Menu Options and Parameters
- 4.4 Terminal Mode Control
- 4.4.1 Modem Terminal Mode Control
- 4.4.2 Modem Setup for Terminal Mode
- 4.5 Terminal Port User Interface
- 4.6 Connecting the Terminal
- 4.7 Terminal Screens
- Rear Panel Interfaces
- 5.0 DMDVR20 LBST Connections
- 5.1 Compact Flash
- 5.2 Power Input Modules
- 5.2.1 AC Power Input Module
- 5.3 DMDVR20 LBST Chassis Connections
- 5.3.1 EXT REF (J10)
- 5.3.2 TX L-Band IF (J11)
- 5.3.3 RX (J1)
- 5.3.4 ALARM (J15)
- 5.3.5 EXT CLK (J16)
- 5.3.6 ASYNC (J17) (NOT SUPPORTED)
- 5.3.7 (J18)
- 5.3.8 EIA-530 (J19)
- 5.3.9 REMOTE (J20)
- 5.3.10 ETHERNET (J21) (FUTURE OPTION)
- Maintenance and Troubleshooting
- 6.0 Periodic Maintenance
- 6.0.1 Clock Adjustment
- 6.1 Troubleshooting
- 6.1.1 Alarm Faults
- 6.1.1.1 Major Tx Alarms
- 6.1.1.2 Major Rx Alarms
- 6.1.1.3 Minor Tx Alarms
- 6.1.1.4 Minor Rx Alarms
- 6.1.1.5 Common Major Alarms
- 6.2 Alarm Masks
- 6.2.1 Active Alarms
- 6.2.1.1 Major Alarms
- 6.2.1.2 Minor Alarms
- 6.2.1.3 Common Equipment Faults
- 6.2.2 Latched Alarms
- Technical Specifications
- 7.0 Data Rates
- 7.1 Modulator
- 7.2 Demodulator
- 7.3 Monitor and Control
- 7.4 Terrestrial Interfaces
- 7.5 IBS/Synchronous Interface (Standard)
- 7.6 Environmental
- 7.7 Physical
- 7.8 DMDVR20 LBST Modulator Data Rate Limits
- 7.8.1 Closed Net Data Rate Limits
- 7.9 DMDVR20 LBST Demodulator Specifications
- 7.9.1 Data Rates (DSS-S2)
- 7.10 BER Performance (LDPC)
- Product Options
- Front Panel Upgrade Procedure
- Carrier Control
- Strap Codes
- Glossary