Black Box ME445C-X.21, ME444AE-R3, ME445C-35, ME444A-R3 manual Kbps Line Driver V.35, RS-530, or

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256-KBPS LINE DRIVER (V.35, RS-530, OR X.21)

6.Run twisted-pair cable between the local and remote cards. Attach one pair of wires to the corresponding XMT terminals (“TB1”) on the back of the local RackNest and the corresponding RCV terminals on the remote RackNest; attach the other pair of wires to the RCV terminals on the local RackNest and the XMT terminals on the remote RackNest. (It doesn’t matter which wire in each pair goes to which terminal in each pair; the cards autosense parity.) If you’re using a ground wire, attach it to the GND terminal on one RackNest (not both of them!)

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Contents Kbps Line Driver FCC and IC RFI Statements Safety Warnings Declaration of Conformity Kbps Line Driver V.35, RS-530, or NOM Statement Trademarks Used in this Manual Contents Flow Control None SpecificationsSpecifications Physical Description IntroductionFunctional Description Line driver block diagramModulation Timing Point-to-point application ApplicationsTail-circuit application Installing the Card Version in the RackNest 2/14 ConfigurationPlacement of the Standalone Version Description of the Racknest 2/14’S Power Supply User-configurable options Configuring the Standalone or Card VersionUser-configurable options Layout of the 256-kbps Line Driver circuit board Kbps Line Driver V.35, RS-530, or Installing the Standalone Version in 19-Inch Racks InstallationInstalling a single unit in a 19-inch rack Installing two units in a 19-inch rack Installing a card in the RackNest 2/14 Installing the 256-kbps Line Driver Rackmount Card VersionRackNest 2/14 illustrated Function Installation Kbps Line Driver V.35, RS-530, or Signal ITU-TSS Lead Name Abbrev Circuit Type Rack Norm Nest PIN Pinout of the V.35 standalone’s M/34 connector DB25 DA15 Connecting Data Cables Line Connection Installation Operation Controls and IndicatorsOperation Indicators Operating ProcedureLoop Tests TroubleshootingBit-Error-Rate Tester Bert Bert using loops Local Analog Loopback Modem Self-TestLocal analog loopback Remote Digital Loopback Remote digital loopback Local Digital LoopbackLocal digital loopback Calling Black BoxShipping and Packaging 19-AWG 22-AWG 24-AWG 26-AWG Kbps Miles Appendix Maximum DistancesCopyright 2004. Black Box Corporation. All rights reserved