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

2-2

DSU 56/64 User Manual

61200062L1-1

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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 Red Test Status/Error Yellow/Red Being utilized for testing Test 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