ADTRAN DSU 56 user manual Configuration, Clear To Send CS SW Down Normal, Up On, Up Long

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Chapter 2. Installation

Power Up

The DSU 56/64 is equipped with a captive six-foot power cord that is terminated with a three-prong plug for connecting to a grounded power receptacle.

Ensure that a grounded, 115 VAC, 60 Hz receptacle is used for powering the DSU 56/64 unit.

CONFIGURATION

The DSU 56/64 has eight options for controlling the operation of both the network and DTE interfaces. These options are selected by setting individual switches on either position DIP switch that is accessible from the rear panel. A chart showing the options and switch settings is attached to the bottom of the unit.

Clear To Send (CS) - SW 1

Down - Normal

In the down position, CS follows the RS lead with the selected amount of delay. The only exceptions to this occur when network or test conditions prevent data from being transferred over the DTE interface. During these conditions CS is turned off.

Up - On

CS is forced on all the time.

Clear to Send Delay (CS Delay) - SW 2

Switch Position

RS to CS Delay

Down - Short 250 ∝ s + 125 ∝ s

Up - Long

10 ms + 125 ∝ s

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DSU 56/64 User Manual

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Contents DSU 56/64 Page Important Safety Instructions Save These Important Safety InstructionsAffidavit Requirements for Connection to Digital Services Page Page Service Type Digital Facility Service Order Code Canadian Emissions Requirements Canadian Equipment Limitations Limited Product Warranty Customer Service, Product Support Information, and Training Presales Inquiries and Applications SupportPost-Sale Support Repair and ReturnTraining Table of Contents Appendix A. Pinouts Appendix B. Specifications Index Index-1 List of Figures DSU 56/64 UnitList of Figures Xvi List of Tables List of Tables Xviii Introduction Product OverviewFront Panel Network Status RedTest Status/Error Yellow/Red Being utilized for testingTest Switches LoopRear Panel DSU 56/64 Rear PanelInstallation UNPACK, INSPECT, Power UPConfiguration Clear to Send Delay CS Delay SW Switch PositionClear To Send CS SW Down Normal Up OnAntistream SW Down OffCarrier Detect CD SE Down Normal Data Set Ready SR SW Down OnRemote Digital Loopback RDL SW Down Enable Up DisableLoop Rate SW Down 56 Kbps Up 64 kbpsDefault Option Switch Settings Switch Position SettingNetwork Connections DTE ConnectionsInstallation Self Test Test ModesNear END Tests DTE only TestDTE with Test Pattern TP DTE with TP Test Diagram DTE and Loop Test LLDTE and Loop Test Diagram Loop Only Test Diagram Loop only Test RTFAR END Tests Remote DigitalTest Pattern Ptrn Remote Tests Test Modes Appendix a Pinouts Table A-2. V.35 DTE Pinouts PinDescription Appendix B Specifications Specifications and FeaturesDiagnostics PowerHardware Specifications EnvironmentIndex Index-2

DSU 56 specifications

The ADTRAN DSU 56 is an essential device for businesses and organizations looking to establish reliable serial communication over digital circuits. A Data Service Unit (DSU) acts as a bridge, converting digital data from a Local Area Network (LAN) into a format suitable for transmission over telephone lines or other digital links. The DSU 56 is specifically designed to operate at 56 Kbps, making it a vital component in many networking setups where higher bandwidth is unnecessary.

One of the main features of the ADTRAN DSU 56 is its ability to support a variety of interfaces. It is equipped with both V.35 and RS-232 ports, allowing for flexible connectivity options to diverse networking equipment and configurations. This versatility ensures that organizations can easily integrate the DSU 56 into their existing telecommunications infrastructure.

The DSU 56 is built on advanced technologies that ensure efficient data transfer and reliability. It incorporates error correction mechanisms and extensive diagnostic capabilities, which help identify and troubleshoot issues quickly. This is particularly important in mission-critical applications where downtime can lead to significant operational disruptions.

In addition to reliable data conversion, the DSU 56 offers features like loopback testing and performance monitoring. These functionalities enable network administrators to assess the health and performance of the connection with ease. Loopback tests can be initiated locally or remotely, allowing for thorough testing of the entire data path without disrupting ongoing operations.

Another notable characteristic of the ADTRAN DSU 56 is its compact and robust design. It is built to withstand various operating conditions, making it suitable for deployment in different environments, including data centers and remote installations. The device is also energy efficient, contributing to lower operational costs.

The DSU 56 supports various protocols, such as Frame Relay and PPP, ensuring compatibility with numerous public and private network infrastructures. This adaptability makes it a valuable asset for businesses transitioning to digital communication systems or those seeking to enhance their existing setups.

In conclusion, the ADTRAN DSU 56 stands out as a reliable and versatile solution for organizations needing to facilitate effective data communication over digital circuits. Its robust features, combined with advanced technologies, position it well in the marketplace, making it a choice for businesses focused on maintaining high-quality connectivity.
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