Plesiochronous Buffer, Monitor and Control

Technical Specifications DMD15/DMD15L/DMD15/DMD15LL/DMD15/DMD15LIBS/IDR Satellite Modem

FEC:	Viterbi, K = 7 at 1/2, 3/4, and 7/8 Rate,
	Rate Sequential 1/2, 3/4, 7/8 (optional)
	Trellis 2/3 (Optional)
	Turbo Product Code (Optional)
	3/4 Rate (0.793)	- (64,57) x (64,57)
	1/2 Rate (0.495)	- (32,26) x (32,26) x (4,3)
	(Turbo supported at all modulation types)
Decoder Options:	Reed-Solomon
Descrambler:	CCITT V.35 or IBS (others optional)
Acquisition Range:	Programmable ±1 kHz to ± 32 kHz
Sweep Delay Value:	0 sec to 900.0 sec. in 100 msec. Steps
Reacquisition sweep	0 top 32000 Hz in 1 Hz steps.

7.2 Plesiochronous Buffer

Size:	2 ms to 32 ms
Centering:	Automatic on underflow/overflow
Centering Modes:	IBS: Integral number of frames
	IDR: Integral number of multiple frames
Clock:	Transmit, External, Rx Recovered or SCT (Internal)

7.3 Monitor and Control

Transmit and Receive Frequencies

Transmit and Receive Data Rates and Code Rate

Differential Encoding On/Off

Scrambler On/Off

Spectrum Normal/Inverted

Clock Source, Polarity and Frequency

Transmit Carrier On/Off and Tx Level

Tx Test Modes

Demodulator Input Level

Eb/No

Buffer Size, Clock, Center Buffer

Sweep Range and Delay

IDR/IBS Backward Alarms, Modem/Switch Alarms

IDR/IBS Framing, Drop and Insert Mode and Flags

Loopback; Terrestrial and Satellite

7.4 DMD15/DMD15L Drop and Insert (Optional)

Terrestrial Data:	1.544 Mbps or 2.048 Mbps, G.732/733
Line Coding:	AMI or B8ZS for T1 and HDB3 for E1
Framing:	D4, ESF, or SLC-96 for T1 and PCM30 (30 channels) or
	PCM31 (31 channels for E1).
Time Slot Selection:	n x 64 contiguous or arbitrary blocks for Drop or Insert.
Time Slots:	TS1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30
Data Rates:	64, 128, 192, 256, 320, 384, 512, 640, 768, 960, 1024, 1280,
	1536, 1920 Kbps

7-2	TM051 – Rev. 5.8

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.

Paradyne Plesiochronous Buffer, Monitor and Control, DMD15/DMD15L Drop and Insert Optional

Models: DMD15 DMD15L

FEC:

7.2 Plesiochronous Buffer

7.3 Monitor and Control

7.4 DMD15/DMD15L Drop and Insert (Optional)

TM051 – Rev. 5.8

DMD15, DMD15L specifications