User InterfacesDMD15/DMD15L IBS/IDR Satellite Modem

Loopbacks:

Terrestrial Loopback is performed at the Terrestrial

 

Interface

IF:

IF loopback loops the IF output of the Modulator to the IF

 

input of the Demodulator. If using 8PSK or 16QAM

 

modulation the output power must be above –15 dB.

Tx Terr:

Sends Tx Terrestrial Data to Rx data out.

Rx Terr:

(Distant Loop) Sends received satellite data to the

 

Modulator for transmission to the distant end.

Tx/Rx Terr:

Enables both. Baseband loopback is performed at

 

interface between the Baseband Processor Card and the

 

Modem Card. This ensures Framer/Deframer integrity.

Tx BB:

Sends Tx data to the receive input to the BB Card.

Rx BB:

Sends Rx data from the Modem Card to the Tx data

 

input to the Modem Card.

Tx/RX BB:

Enables both.

Carrier:

 

CW:

Causes the Modulator to output a pure carrier.

Dual:

Causes a double sideband output.

Offset:

Causes a single sideband output.

Normal:

Causes the Modulator to output normal modulation.

Pos Fir:

For manufacturer’s use only.

Neg Fir:

For manufacturer’s use only.

4.4 DMD15/DMD15L Strap Codes

The Strap Code is a quick set key that sets many of the modem parameters. For quick setup of the DMD15/DMD15L, Strap Codes are very helpful. When a Strap Code is entered, the modem is automatically configured for the code’s corresponding data rate, overhead, code rate, framing, scrambler type and modulation. An example of how to set a strap code follows:

Example: At the Front Panel <Modulator> Menu, depress ‘↓’, then move ‘→’ to the ‘Strap Code’ Submenu and enter #16. The DMD15/DMD15L will be automatically configured to the parameters shown below in the highlighted row ‘Strap Code 16’.

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Paradyne operation manual DMD15/DMD15L Strap Codes
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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.
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