Black Box ME444A-530-R3, ME444AE-R3, ME445C-X.21, ME445C-35, ME444A-R3, ME445C-530 manual Function

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

Table 4-1. Descriptions of RackNest 2/14 components.

Item	Control, Indicator, or Connector	Function

1	Card Slots	Slots for installation of compatible cards
		(slot no. 1 located at the left-hand side).
		Unused slots are closed with blank
		panels.

2	Power-Supply Module	Provides power to modules installed in
		the enclosure.

3	ON Indicator	Lights when power supply is operating.

4	Chassis-Ground Terminal	Connector for attaching other grounds,
		devices, etc., to the RackNest’s chassis
		ground (optional).

5	Power Connector	Power connector with integral fuse.

6	Main Channel Connectors (J1)	DB25 connectors for the module DTE
		connection.

7	4-Wire Terminal Blocks (TB1)	For connection of 4-wire lines. Each
		modem card has a separate terminal-
		block connector.

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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 Configuration Placement of the Standalone VersionInstalling the Card Version in the RackNest 2/14 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 ProcedureTroubleshooting Bit-Error-Rate Tester BertLoop Tests 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