Chapter 2: Overview

2. Overview

2.1 Introduction

The USB to Multi RS-232/422/485 Interface Converter (IC292A) provides an easy way to connect up to four DB9 serial devices to a single USB port. All configuration and electrical interface selections are handled through the driver, so you don’t have to open the enclosure to set jumpers or switches. The serial port is software configurable for RS-232, RS-422, or RS-485 (full- and half-duplex).

The IC293A software drivers and utilities make installation and operation easy for Windows® 98SE, ME, 2000, XP, and Windows Vista® operating systems. Once the software is installed, plug the interface converter into an available USB port. Each serial port is recognized as a standard COM port by the host system enabling compatibility with legacy software. Serial data rates to 921.6 kbps are supported.

To prevent accidental cable disconnection, the interface converter integrates a patent-pending high-retention locking USB port that is fully compatible with standard USB cables. When used with the included USB cable with a high- retention USB type B connector, the metal thumbscrew provides a secure connection to the device. Standard operating temperature range is 32 to 158° F (0 to 70° C) and extended temperature range is -4 to +185° F (-40° C to +85° C). Status LEDs display electrical interface selection and serial data activity for each port.

2.2 Features

Each port is individually software configurable for RS-232, RS-422, and two-wire or four-wire RS-485.

Maintains electrical interface settings across multiple computers.

Includes high-speed UART with 128-byte Tx FIFO and 384-byte Rx FIFO.

Automatically enables/disables hardware RS-485.

DB9M connector serial port supports data rates to 921.6 kbps.

Powered by USB host connection.

Implements full modem control signals in RS-232 mode.

Status LEDs indicate power, electrical interface, and serial data activity for each port.

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Black Box RS-232, 422, 485, Black Box Interface Converter, 4-Port manual Overview Introduction, Features

485, 422, Black Box Interface Converter, 4-Port, RS-232 specifications

Black Box RS-232 is a versatile device designed for serial communication using the well-established RS-232 standard. The RS-232 standard has been a cornerstone for serial communication since its introduction in the 1960s and is widely used in various applications today.

One of the main features of Black Box RS-232 devices is their ability to communicate over relatively long distances, up to 50 feet or more, while maintaining clear and reliable signal quality. This capability makes it ideal for connecting devices like computers, modems, and other serial peripherals in environments where distance could pose a problem.

Another key characteristic of Black Box RS-232 products is their support for both hardware and software flow control. This flexibility allows users to choose the best method for managing data transmission, preventing data loss and ensuring efficient communication. Additionally, many Black Box RS-232 devices are configured to support multiple baud rates, which allows them to communicate at varying speeds, accommodating different devices and requirements.

Black Box RS-232 devices often come equipped with multiple ports, which can support simultaneous connections to various devices. This multitasking ability is particularly beneficial in industrial and commercial settings where numerous devices need to communicate with a central control system.

The technology behind Black Box RS-232 incorporates robust signal processing capabilities to reduce noise and ensure data integrity. This is particularly important in settings where electromagnetic interference (EMI) could compromise communication reliability. Furthermore, some Black Box RS-232 products feature built-in diagnostics tools that help users troubleshoot potential issues quickly, enhancing overall productivity.

In terms of physical characteristics, Black Box RS-232 devices are typically compact and durable, making them suitable for both desktop and rack-mounted installations. Their design often includes user-friendly interfaces that simplify setup and configuration, making them accessible even to those with limited technical expertise.

In summary, Black Box RS-232 offers a reliable, flexible, and robust solution for serial communication needs. Its key features, including long-distance communication capabilities, support for diverse flow control methods, multiple port configurations, and noise-reduction technologies, make it an invaluable asset in a range of applications from industrial automation to data acquisition in scientific settings. This combination of reliability and versatility solidifies Black Box RS-232 as a preferred choice for businesses and industries relying on effective serial communication.