Black Box ME758C-RJ11, ME758C-RJ45, ME759C-RJ45, May-95, ME759C-RJ11 manual MULTI-FUNCTION LD Card

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MULTI-FUNCTION LD CARD

To gain optimum performance from the Multi-Function LD Card, please keep these guidelines in mind:

•Always use twisted-pair cable—this is not an option.

•Use twisted-pair cable with a capacitance of 20 pf/ft. (65.6 pf/m) or less.

•Avoid twisted-pair cable thinner than 26 AWG (that is, avoid higher AWG numbers than 26).

•Using twisted-pair cable with a resistance greater than that listed at the top of this page might reduce the maximum distance you can run the cable, but should not otherwise affect your system.

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Contents Multi-Function LD Cards FCC Statements MULTI-FUNCTION LD Card NOM Statements Contents Specifications Indicators DiagnosticsConnectors Fuse PowerTemperature WeightFeatures IntroductionOverview Introduction Main-module switches Setting the Switches on the Main ModuleSwitch S1 Summary On and OFF settings of the DIP switchesS1 Positions 1 through 4 Data-Rate Setting S1 Positions 5 and 6 Clock SourceS1 Position 7 Protocol Switch S2 Summary S2 Position 2 2-Wire vs -Wire OperationS1 Position 8 Carrier-Control Method S2-7 and S2-8 Word Length S2 Position 3 V.52 and V.54 Diagnostic TestingS2 Positions 4 and 5 RTS/CTS Delay S2-6 Signaling-Rate RangeS3-1 and S3-2 Input Impedance Switch S3 SummaryS3-6 DTE RS-232 Initiation of Remote Loopback Test Recommended Impedance SettingsS3-4 Mode Selection S3-5 DTE RS-232 Initiation of Local Loopback TestS3-7 and S3-8 Antistream Control Setting the Jumpers on the Interface ModuleFour interface modules Jumper locations Line Interface Line Shield Connection to Frame Ground JB2 Summary of Interface-Module Jumper FunctionsJB5 Serial Interface Signal Ground and Frame Ground JB4MicroRacks An Overview InstallationMicroRacks’ Power Supply Installing the Multi-Function LD Card in the MicroRack RS-232 Serial Cables and Connectors Pinout of the RS-232 InterfacePinout of the 10-Pin RJ Interface Modem-to-Modem Line Cables and Connectors AT&T standard modular color codes Line-Cable PinoutsMultipoint Applications Two-pair star wiring for host and slave CardsStatus LEDs Operation and DiagnosticsRTS and CD Indicators Diagnostic Testing Using the Error LED Power-Up V.54 and V.52 Diagnostic Tests Remote Digital Loopback RDL Using the V.52 Bert Test Independently Troubleshooting Calling Your SupplierShipping and Packaging Appendix Cable Recommendations Wire Gauge Capacitance ResistanceMULTI-FUNCTION LD Card Copyright 1995. Black Box Corporation. All rights reserved