DMD15/DMD15L IBS/IDR Satellite Modem

Introduction

 

 

Section 1 – Introduction

1.0 Description

The Radyn, Inc. DMD15/DMD15L Satellite Modem (Figure 1-1) offers the best features of a sophisticated programmable IBS/IDR and Closed Network Modem, at an affordable price.

This versatile equipment package combines unsurpassed performance with numerous user- friendly Front Panel Programmable Functions. The DMD15/DMD15L provides selectable functions for different services: Intelsat IDR and IBS, as well as closed networks. All of the configuration and Monitor and Control (M&C) Functions are available at the Front Panel. Operating parameters, such as variable data rates, FEC Code Rate, modulation type, IF frequencies, IBS/IDR Framing and interface type can be readily set and changed at the Front Panel by earth station operations personnel. Additionally, all functions can be accessed with a terminal or personal computer via a serial link for complete remote monitoring and control capability.

The DMD15/DMD15L operates at all standard IBS and IDR Data Rates up to 8.448 Mbps. Selection of any data rate is provided over the range of 9.6 Kbps to 10 Mbps in 1 bps steps.

For applications requiring system redundancy, the DMD15/DMD15L Modem may be used with the Radyne , Inc. RCS11 1:1 Redundancy Switch or the RCS20 M:N (N < 9) Redundancy Switch. An optional Internal Engineering Service Channel Unit is available to provide voice, data, and alarms for Intelsat IDR applications.

A full range of Industry Standard Interfaces is available for the DMD15/DMD15L. Interface types are selectable from V.35, RS-232, RS-422/449 and ITU G.703.

Figure 1-1. DMD15/DMD15L Universal Satellite Modem Front Panel

1.1 DMD15/DMD15L Available Options

A wide range of options is available for the DMD15/DMD15L Satellite Modem.

1.1.1 Internal High Stability

The DMD15/DMD15L can be equipped with a 1x10-7or better Stability Frequency Reference as an add-on enhancement.

1.1.2 Reed-Solomon Codec

The DMD15/DMD15L can be equipped with a Reed-Solomon (R-S) Outer Codec with an interleaver as an optional add-on enhancement. The encoder and decoder are completely independent and meet the IESS-308/309/310 specification. Once prepped, this option can be installed in the field by installing five ICs into existing sockets. The DMD15/DMD15L must be prepped for this option.

Note: Custom Reed-Solomon codes are also available.

TM051 - Rev. 5.8

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Paradyne operation manual Description, DMD15/DMD15L Available Options, Internal High Stability, Reed-Solomon Codec

DMD15, DMD15L specifications

The Paradyne DMD15L and DMD15 are advanced digital modems designed to enhance communication in a variety of networking environments. As part of Paradyne's robust portfolio of networking solutions, these devices are engineered to deliver reliable and efficient data transmission over both copper and fiber optic connections.

One of the main features of the DMD15L and DMD15 is their capability to support Multiple Protocol Data Units (MPDUs), which enables them to handle a diverse range of network protocols seamlessly. This flexibility makes them suitable for different applications, from industrial automation to telecommunications.

These modems utilize advanced modulation techniques, such as Quadrature Amplitude Modulation (QAM), to maximize data throughput while maintaining signal integrity. This ensures that users benefit from high-speed connections, even in challenging signal environments. Furthermore, the DMD15 series incorporates Error Correction Codes (ECC) that enhance data reliability, effectively reducing packet loss and ensuring data coherence during transmission.

The DMD15L is particularly notable for its long-range capabilities, making it a go-to solution for users requiring extended distances without compromising data quality. It features built-in Adaptive Equalization, which automatically adjusts signal levels to optimize performance over varying transmission distances. This technology is crucial in maintaining consistent high-speed connectivity, especially in environments with variable conditions.

Both models are equipped with user-friendly interfaces that facilitate configuration and management. They support SNMP (Simple Network Management Protocol) for real-time network monitoring, allowing administrators to track performance metrics and identify potential issues before they impact users. The devices also include LED indicators for quick status checks, ensuring that users have immediate visibility of operational conditions.

In terms of physical characteristics, the DMD15 and DMD15L are designed for durability and ease of installation. They come in a compact form factor, making them suitable for deployment in constrained spaces. Additionally, their robust casing is built to withstand harsh environmental conditions, making them suitable for both indoor and outdoor installations.

Overall, the Paradyne DMD15L and DMD15 are high-performance modems that combine versatile technologies, reliability, and user-friendly features. They are excellent choices for organizations looking to enhance their communication capabilities and ensure robust data transmission across diverse networks. With their advanced functionalities and adaptability, these modems stand out as key components in modern network infrastructure.