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General| Weight | 15 lbs (6.8 kg) |
|---|---|
| Modulation | BPSK, QPSK, 8PSK, 16QAM |
| FEC | Viterbi, Reed-Solomon |
| IF Frequency | 70 MHz ±18 MHz |
| Frequency Range | L-band |
| Interface | Ethernet |
| Operating Temperature | 0°C to +50°C |
Provides a general overview of the modem, its features, and capabilities.
Details the various ways the modem can be configured, including factory options and upgrades.
Instructions for safely unpacking and checking the modem and its components for any shipping damage.
Steps to verify the modem's factory default settings after initial power-up.
Describes the modem's internal architecture, including printed circuit cards and block diagrams.
Explains the M&C system for monitoring, control, alarms, and status reporting.
Details the various clocking options for Tx and Rx clocks to optimize performance.
Covers a patented algorithm for sharing transponder bandwidth, optimizing spectral efficiency and saving costs.
Describes the front panel layout with LCD, keypad, and LEDs for modem control and monitoring.
Outlines the main menu structure for configuring Modulator, Demodulator, Interface, Monitor, Alarms, System, and Test.
Explains using an external terminal for full-screen interactive monitoring and control via RS-232.
Details the rear panel electrical interfaces and labeled connectors for system integration.
Lists and describes the standard rear panel connectors for the DMD20 chassis.
Details the HSSI interface, a 50-Pin SCSI-2 connector complying with HSSI specifications.
Explains the optional Ethernet Data Interface with four RJ-45 ports supporting 10/100 Ethernet.
Provides guidance on diagnosing and resolving modem issues, including common symptoms and alarm faults.
Details IBS fault conditions and recommended actions for Earth Station, terrestrial, and satellite links.
Lists technical specifications for the modulator, covering modulation, tuning, impedance, and FEC.
Provides technical specifications for the demodulator, including demodulation, tuning, impedance, and FEC.
Details data rate limits for Non-DVB and DVB modes by modulation and code rate.
Presents Bit Error Rate performance specifications across various modulation, coding, and decoding schemes.
Lists available enhanced interface cards and hardware options for the modem.
Outlines specifications for the optional Ethernet Data Interface with 10/100 Ethernet ports.
Provides a step-by-step guide for permanently updating the modem's feature set via the front panel.
Explains how to enable 30-day demo options for modem features.
Describes the Carrier Control states: OFF, ON, AUTO, VSAT, and RTS, for managing carrier output.
Explains RTS mode's behavior, enabling modulator output based on the RTS lead of the data interface.
Details the quick set key for configuring modem parameters like data rate, framing, and modulation.
Provides brief application notes and examples for configuring the modem for popular settings.
Outlines steps for configuring TCP/IP settings, including Boot Mode and IP addresses.
Describes procedures for testing Ethernet connectivity, including cable connections and ping tests.
Emphasizes correctly setting up TCP-IP menus before using the web interface.
Instructions on accessing the modem's web interface by typing its IP address in a browser.
Provides configuration steps for various browsers for optimal web interface display.
Explains the AUPC feature for adjusting uplink power to maintain constant Eb/No.
Introduces the D&I function providing an interface between T1/E1 trunks and Nx64 Kbps satellite channels.
Explains dependencies and procedures for configuring the modem for D&I functionality.
Details menu selections for controlling efficient Drop & Insert functionality.
Guides users on configuring the modem for Ethernet interface use, covering Tx/Rx setup and flow control.
