Black Box May-95, ME758C-RJ45 manual JB5, Serial Interface Signal Ground and Frame Ground JB4

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CHAPTER 3: Configuration

Serial Interface: DTE Shield (Pin 1) Connection to Frame Ground (JB3)

This jumper applies to the serial interface. In position 1 and 2, this jumper links the Protective Ground (PGND) or “DTE Shield” lead (DB25 Pin 1 or 10- pin RJ Pins 1 and 10) of the RS-232 line to the interface module’s frame ground (FGND). When this jumper is in positions 2 and 3, the RS-232 Protective Ground on DB25 Pin 1 or RJ-45 Pins 1 and 10 is disconnected (“lifted”) from frame ground.

JB5

Positions 1 and 2 = PGND and FGND Connected

Positions 2 and 3 = PGND and FGND Not Connected (default)

Serial Interface: Signal Ground and Frame Ground (JB4)

This jumper also applies to the serial interface. In position 1 and 2, this jumper links the Signal Ground (SGND) lead (DB25 Pin 7 or 10-pin RJ Pin 5) of the RS-232 line to the interface module’s frame ground (FGND). When this jumper is in positions 2 and 3, RS-232 Signal Ground on DB25 Pin 7 or 10-pin RJ Pin 5 is disconnected (“lifted”) from frame ground.

JB5

Positions 1 and 2 = SGND and FGND Connected

Positions 2 and 3 = SGND and FGND Not Connected (default)

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Contents Multi-Function LD Cards FCC Statements MULTI-FUNCTION LD Card NOM Statements Contents Specifications Diagnostics IndicatorsConnectors Weight PowerTemperature FuseIntroduction FeaturesOverview Introduction Setting the Switches on the Main Module Main-module switchesOn and OFF settings of the DIP switches Switch S1 SummaryS1 Positions 5 and 6 Clock Source S1 Positions 1 through 4 Data-Rate SettingS1 Position 7 Protocol S2 Position 2 2-Wire vs -Wire Operation Switch S2 SummaryS1 Position 8 Carrier-Control Method S2-6 Signaling-Rate Range S2 Position 3 V.52 and V.54 Diagnostic TestingS2 Positions 4 and 5 RTS/CTS Delay S2-7 and S2-8 Word LengthSwitch S3 Summary S3-1 and S3-2 Input ImpedanceS3-5 DTE RS-232 Initiation of Local Loopback Test Recommended Impedance SettingsS3-4 Mode Selection S3-6 DTE RS-232 Initiation of Remote Loopback TestSetting the Jumpers on the Interface Module S3-7 and S3-8 Antistream ControlFour interface modules Jumper locations Summary of Interface-Module Jumper Functions Line Interface Line Shield Connection to Frame Ground JB2Serial Interface Signal Ground and Frame Ground JB4 JB5Installation MicroRacks An OverviewMicroRacks’ Power Supply Installing the Multi-Function LD Card in the MicroRack Pinout of the RS-232 Interface RS-232 Serial Cables and ConnectorsPinout of the 10-Pin RJ Interface Modem-to-Modem Line Cables and Connectors Line-Cable Pinouts AT&T standard modular color codesTwo-pair star wiring for host and slave Cards Multipoint ApplicationsOperation and Diagnostics Status LEDsRTS 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 Calling Your Supplier TroubleshootingShipping and Packaging Wire Gauge Capacitance Resistance Appendix Cable RecommendationsMULTI-FUNCTION LD Card Copyright 1995. Black Box Corporation. All rights reserved