Table of Contents
Sectionone
1.0Scope
1.1Abstracts,sectionstwothroughseven
1.2Interfaceconfigurations
1.3Datasignalingrates
1.4Signalcommon
1.5Synchronous/nonsynchronouscommunication
1.6Classesofservice
1.7Allocationoffunctions
1.8Modesofoperation
Sectiontwo
2.0Signalcharacteristics
2.1Electricalcharacteristics
2.1.1Equivalentcircuit
2.1.2Safetyconsiderations
2.1.3Definitionofsignalstatesoninterchange
circuits
2.1.4Receiverimpedance
2.1.5"Failsafe"interchangecircuits
2.1.6Generatorpotentialsandcurrents
2.1.7Requirementsintransitionregion
2.2Protectiveground(frameground)
2.3Shield
Sectionthree
3.0Interfacemechanicalcharacteristics
3.1Definitionofmechanicalinterface
3.2Cablelength
3.325-positioninterfaceconnector
3.4AltA26-positioninterfaceconnector
3.5Connectorpinidentification
Sectionfour
4.0Functionaldescriptionofinterchangecircuits
4.1General
4.2Categories
4.3Signalcharacteristics,general
4.4Interchangecircuits
4.4.1CircuitABSignalcommon
4.4.2CircuitBATransmitteddata
4.4.3CircuitBBReceiveddata
4.4.4CircuitCARequesttosend
4.4.5CircuitCBCleartosend
4.4.6CircuitCCDCEready
4.4.7CircuitCDDTEready
4.4.8CircuitCERingindicator
4.4.9CircuitCFReceivedlinesignaldetector
4.4.10CircuitCGSignalqualitydetector
4.4.11CircuitCHDatasignalrateselector(DTE
source)
4.4.12CircuitCIDatasignalrateselector(DCE
source)
4.4.13CircuitCJReadyforreceiving
4.4.14CircuitLLLocalloopback
4.4.15CircuitRLRemoteloopback
4.4.16CircuitTMTestmode
4.4.17CircuitDATransmittersignalelementtiming
(DTEsource)
4.4.18CircuitDBTransmittersignalelementtiming
(DCEsource)
4.4.19CircuitDDReceiversignalelementtiming
4.4.20CircuitSBASecondarytransmitteddata
4.4.21CircuitSBBSecondaryreceiveddata
4.4.22CircuitSCASecondaryrequesttosend
4.4.23CircuitSCBSecondarycleartosend
4.4.24CircuitSCFSecondaryreceivedlinesignal
detector
Sectionfive
5.0Standardinterfacesforselectedcommunication
systemconfigurations
5.1Abstract
5.2Conditions
5.3Configurations
5.4Useofsignalcommon
Sectionsix
6.0Recommendationsandexplanatorynotes
6.1Classesofservice
6.2Noiseconsiderations
6.3Useofrelays
6.4Circuitcapacitance
6.5Testreceivers
6.6Distortion
6.7Linesignals
6.8UseofcircuitLLfor"busyout"
Sectionseven
7.0Glossary
AppendixA
A.1Interconnectingcablecharacteristics
A.2Example
AppendixB-References Abstract
Defines the interconnection of data terminal equipment (DTE) and data circuit-terminating equipment (DCE) employing binary data interchange.
