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Paradyne DMD15L 19 DMD15 Automatic Uplink Power Control Aupc Operation, Idr, 8PSK

Models: DMD15 DMD15L

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Operation

DMD15/DMD15L IBS/IDR Satellite Modem

 

 

Table 3-1. Reed-Solomon Codes for IDR

 

 

Type of

 

Data Rate

 

RS Code (n,

 

Bandwidth

 

 

Interleaving

 

Maximum 2

 

 

 

 

Service

 

(Kbps)

 

k, t) 1

 

Expansion

 

 

Depth

 

RS Codec

 

 

 

 

 

 

 

 

 

 

[ (n/k) -1 ]

 

 

 

 

Delay (ms)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Small IDR

 

64

 

(126, 112, 7)

 

0.125

 

4

 

115

 

 

 

 

(With 16/15

 

128

 

(126, 112, 7)

 

0.125

 

4

 

58

 

 

 

 

O/H)

 

 

 

 

 

 

 

 

 

 

256

 

(126, 112, 7)

 

0.125

 

4

 

29

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

384

 

(126, 112, 7)

 

0.125

 

4

 

19

 

 

 

 

 

 

512

 

(126, 112, 7)

 

0.125

 

4

 

15

 

 

 

 

 

 

768

 

(126, 112, 7)

 

0.125

 

4

 

10

 

 

 

 

 

 

1024

 

(126, 112, 7)

 

0.125

 

4

 

8

 

 

 

 

 

 

1536

 

(126, 112, 7)

 

0.125

 

4

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IDR

 

1544

 

(225, 205,10)

 

0.0976

 

4

 

9

 

 

 

 

(With 96

 

2048

 

(219, 201, 9)

 

0.0896

 

4

 

7

 

 

 

 

Kbps O/H)

 

 

 

 

 

 

 

 

 

 

6312

 

(194, 178, 8)

 

0.0899

 

4

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8448

 

(194, 178, 8)

 

0.0899

 

4

 

<2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8PSK

 

1544

 

(219, 201, 9)

 

0.0896

 

8

 

18

 

 

 

 

 

 

2048

 

(219, 201, 9)

 

0.0896

 

8

 

13

 

 

 

 

 

 

6312

 

(219, 201, 9)

 

0.0896

 

8

 

4

 

 

 

 

 

 

8448

 

(219, 201, 9)

 

0.0896

 

8

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTES:

1.n = code length, k = information symbols and t = symbol error correcting capability.

2.Design objective.

3.19 DMD15 Automatic Uplink Power Control (AUPC Operation)

The DMD15 Modem has an optional built-in provision for Automatic Uplink Power Control (AUPC). AUPC attempts to maintain a constant Eb/No at the receive end of an SCPC link. This is especially useful when operating over a satellite at Ku-Band Frequencies in locations with high rainfall periods.

Note: An Asynchronous or IBS Interface is required for AUPC. Also, IBS (Async Framing Mode MUST be selected to provide a channel for AUPC operation.

3-22

TM051 – Rev. 5.8

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Paradyne DMD15L operation manual 19 DMD15 Automatic Uplink Power Control Aupc Operation, Idr, 8PSK
Page 42 Page 44

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.