Black Box Multi-Function Line Driver Spécifications télécharger pdf (Page 9)

MULTI-FUNCTION LINE DRIVER

2.1 Overview

The Multi-Function Line Driver (MFLD) is a carrier-controlled short-range

modem that requires no AC power or batteries. The MFLD operates across

two wires (half-duplex) or four wires (full- or half-duplex), communicating

with DTEs synchronously or asynchronously, up to a maximum range of

12 miles (19.3 km). You can set the MFLD to any of twelve data rates from

1.2 to 38.4 Kbps.

Multi-Function Line Drivers always communicate with each other

synchronously. When connected to an asynchronous RS-232 device, an MFLD

performs synchronous↔asynchronous conversion.

The Multi-Function Line Driver has several features that enhance its overall

performance, including automatic equalization, transformer isolation, and

Silicon Avalanche Diode surge protection. The MFLD also has strong

diagnostics: It features V.52-compliant bit-error-rate (BERT) pattern tests

and two V.54 test modes.

The Multi-Function Line Driver is housed in an ABS plastic case and comes

with either a male or a female DB25 connector and either an RJ-11 jack, an

RJ-45 jack, or a terminal block with strain relief.

2.2 Features

• Convenient rack-card design

• Synchronous or asynchronous communication

• Data rates up to 38.4 Kbps, distances up to 12 miles (19.3 km)

• 2-wire/half-duplex or 4-wire/full- or half-duplex operation

• Internal, external, or received loopback clocking

• Hardware or software flow control

• Automatic equalization and gain control

• Built-in transformer isolation and high-speed surge protection

• V.52 and V.54 test modes

2. Introduction

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Black Box Multi-Function Line Driver Spécifications Page 9