DT88 Compact 2 Mbps Multiplexer/Demultiplexer

Overview

DT88 - 2 Mbps audio codec

The DT88 - Compact 2 Mbps Multiplexer/Demultiplexer is the small brother of the famous COMBIMUX DT99. It is ideal for applications where space in the 19" cabinets is limited, and where two interface modules per line end are sufficient (2 Encoders or 2 Decoders or 1 Encoder plus 1 Decoder or 2 Codecs) to transmit up to two stereo signals plus data.

The most important features of DT88 are:

Small size: 19" case with a height of only 2 HU (87.5 mm) and a depth of only 260 mm.

Space-saving equipment installation: the cases can be directly stacked without the need for air space between the equipment for cooling.

Flexible rack mounting: the cases can be mounted into the 19" cabinets in three different ways:

• Connectors accessible from the front;
• Connectors accessible from the front with equipment placed backwards to avoid connectors from protruding;
• Connectors accessible from the back.

Modularity: Possibility to insert up to two interface modules of any type desired.

High-speed transmission: Only 3.6 ms processing time from analog input to analog output via 2 Mbps interfaces with J.41 coding.

COMBIMUX DT88 is a universal system for the transmission of audio and data signals via 2 Mbps channels. Its 19” cabinet holds up to two local I/O modules, e.g. encoders and/or decoders that can be configured by jumpers and by software to operate in several ITU-T and ISO/MPEG audio coding modes. COMBIMUX DT88 does also perform the Drop & Insert functions.

The equipment is configured by a PC using the COMBISOFT program that selects the coding procedure, allocates the time slots to the various audio signals and monitors the operational state.

COMBIMUX DT 88 is built into a 19" cabinet of two height units (h x w x d = 87.5 x 485 x 260 mm) that can be equipped with two input/output modules. The power supply module, the central processor and the 2 Mbps module are integrated into the cabinet.