Black Box ME758C-RJ45, ME759C-RJ45, May-95 Installing the Multi-Function LD Card in the MicroRack

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MULTI-FUNCTION LD CARD

4.2.3SWITCHING THE POWER SUPPLY BETWEEN 120 AND 240 VOLTS

Although the MicroRack is shipped from the factory with a customer-specified power-supply configuration, you may change the configuration yourself. Follow these steps to switch the configuration of the power supply between

120 VAC and 240 VAC:

1.Making sure the rack is turned off and unplugged, remove the power supply’s front module and locate the two-position switch (labeled either “110/220” or “115/230”) near the back of the card. Slide the switch to the setting corresponding to your desired voltage.

2.Replace the existing fuses with fuses of the correct type (see step 4 of Section 4.2.2).

3.If necessary, replace the power-supply cord with a country-specific cord. (For certain countries, your supplier might be able to give you a special quote on country-specific cords.) Plug the cord back in.

4.3Installing the Multi-Function LD Card in the MicroRack

The Multi-Function LD Card is made up of a main (front) module and an interface (rear) module. The two cards meet inside the rack chassis; their mating 50-pin card-edge connectors plug into each other. Use these steps to install each Multi-Function LD Card into a MicroRack:

1.Slide the rear module into the back of the MicroRack on the metal rails.

2.Secure the rear module using the included metal screws.

3.Slide the front module into the front of the chassis. It should meet the rear module when it is almost completely in the chassis.

4.Push the front module gently into the card-edge receptacle of the rear module. It should “click” into place.

5.Secure the front module using the thumbscrews.

NOTE

Since the MicroRacks allow “hot swapping” of cards, it is not necessary to power down the rack when you install or remove a Multi-Function LD Card.

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Contents Multi-Function LD Cards FCC Statements MULTI-FUNCTION LD Card NOM Statements Contents Specifications Diagnostics IndicatorsConnectors Temperature PowerWeight FuseIntroduction FeaturesOverview Introduction Main-module switches Setting the Switches on the Main ModuleSwitch S1 Summary On and OFF settings of the DIP switchesS1 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 Positions 4 and 5 RTS/CTS Delay S2 Position 3 V.52 and V.54 Diagnostic TestingS2-6 Signaling-Rate Range S2-7 and S2-8 Word LengthS3-1 and S3-2 Input Impedance Switch S3 SummaryS3-4 Mode Selection Recommended Impedance SettingsS3-5 DTE RS-232 Initiation of Local Loopback Test S3-6 DTE RS-232 Initiation of Remote 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 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 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 Calling Your Supplier TroubleshootingShipping and Packaging Appendix Cable Recommendations Wire Gauge Capacitance ResistanceMULTI-FUNCTION LD Card Copyright 1995. Black Box Corporation. All rights reserved
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