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Products xDSL Modems & Line Drivers Line Drivers Asynchronous Low-speed Line Drivers

SDT & ADT LINE DRIVERS

MODEL SDT-3LINE DRIVER

SDT-3 LINE DRIVER

An effective low-cost solution for local synchronous data network applications, the SDT-3 Line Driver transmits data at speeds up to 19.2Kbps. The SDT-3 operates at full or half duplex mode over a 4-wire circuit and can be multi-dropped in a multi-point system configuration. It is transparent to data, and can transmit and receive all protocols.  It can be programmed for internal, external, or loop clocking. Using 24 AWG twisted pair wire, you can transmit from 2.8 to 7.5 miles, depending on speed. The SDT-3 interface is a RS232 (DB25 female) connector. Also available is the SDT-3/ERO option for extended ranges.

ADT-3 LINE DRIVER  

The ADT-3 Asynchronous Line Driver is designed to provide error free transmission over unloaded metallic pairs or in-house cabling at speeds up to 19.2Kps. Operating distance from 2.0 miles to 8.5 miles, depending on speed. The ADT-3 operates full duplex over 4-wire circuits and is fully transparent enabling the use of all asynchronous devices on the system. The ADT-3 interface is an RS-232 (DB25 female) connector. Also available are the ADT-3/HDX (half-duplex) and ADT-3/ERO (for extended range) options


Specifications

Model SDT-3Model ADT-3
ModeFull or Half DuplexFull Duplex
InterfaceRS-232 (DB25) female
Line4--Wire Twisted Pair
Size2.5"H x 6.5"W x 7.5"D
Weight2.5lbs
CTS Delay0, 8 or 40 Ms

Speeds-Vs-Distance*

1.2Kbps2.4Kbps4.8Kbps9.6Kbps19.2Kbps
SDT-37.564.12.8
ADT-38.56.44.53.22
*Distance indicated in miles.

SDT-ADT Chassis & Power Supply

Power Distribution ChassisUniversal Mounting Chassis
The power supply for the UMC-2 rack assembly, PDC-1 will support two UMC-2 units.The UMC-2 Rack Assembly is designed to hold sixteen rackmount versions of the ADT-3R or eight of the SDT-3R units.
Power:  115VAC 50/60 HzPower: Requires a PDC Series power supply.
Size:  3.5"H x 19"W x 8.5"DSize:  5.25"H x 19"W x 9"D
Weight:  PDC-1 - 10 lbs
               PDC-3 - 16 lbs
Weight: 8 lbs
PDC-3 is the power supply for the UMC-2 rack assembly with automatic backup for its primary power transformer.  The PDC-3 will power two UMC-2 rack assembliesThe UMC-2GT Rack Assembly is designed to hold sixteen rackmount versions of the ADT-3R or eight SDT-3R units.  All line side signals are terminated into 50 pin connector to allow to direct 25 pair cabling to a distribution panel or frame.