Black Box manual Typical Applications, PORT, 4-PORT, and 8-PORT RS-232 Data Sharers

Page 1

© 2005. All rights reserved. Black Box Corporation.

Black Box Corporation • 1000 Park Drive • Lawrence, PA 15055-1018 • Tech Support: 724-746-5500www.blackbox.com e-mail: info@blackbox.com

2-PORT, 4-PORT, AND 8-PORT RS-232 DATA SHARERS

PWR

 

 

 

 

 

 

 

-2

 

 

 

 

 

 

-232

DATA

SHARER

 

 

 

 

 

 

RS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STATUS

 

 

 

 

 

 

 

 

 

RTS

 

 

 

 

 

 

 

 

 

B

 

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

MASTER

PORT

RTS

DISABLED

 

 

 

 

 

 

 

RXD

ENABLED

 

 

 

 

 

 

-8

RTS

 

 

 

 

 

SHARER

CD

 

 

 

 

 

 

-232

DATA

 

CTS

 

 

 

 

 

RS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MASTER

PORT

RXD

CTS

CD

 

 

 

PWR

 

 

 

RTS

STATUS

F

G

H

RTS

DISABLED

 

 

 

 

ENABLED

 

 

 

E

 

 

RTS

 

 

C

D

 

 

 

 

 

B

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cut equipment costs and phone charges by using a single phone line and modem for up to 2, 4, or 8 RS-232 devices.

Key Features

Transparent to data rates up to 64 kbps.

Synchronous and asynchronous data transmission.

Choose either hardware or round- robin priority to select terminal ports.

With the RS-232 Data Sharer, you save the cost of extra

modems and leased phone lines for your RS-232 systems. Connect up to 2, 4, or 8 RS-232 devices to a single modem and phone line.

Depending on the size of your system, choose either a 2-Port,

4-Port, or 8-Port model. All three models feature transparent operation (up to 64 kbps) and LED monitoring.

the Data Sharer will ignore attempts to access the modem by the device attached to that port.

The 4- and 8-Port models can be polled sequentially for RTS, or you can set a jumper to give certain ports priority over others.

The Data Sharers work with popular IBM communications protocols, including half-duplex Bisynchronous communication and Synchronous Data Link Control (SDLC).

Front-panel switches enable and disable RTS on each input port.

Jumper-selectable options include RTS delay, RXD operation, RTS-timeout period, and data-timeout signal.

By cascading two data sharers together, you can connect up to 15 devices to your RS-232 line.

The Data Sharers work with synchronous or asynchronous devices.

You control which ports can access the modem at any given time. Simply toggle the RTS switches conveniently located on the front panel of the Data Sharer to enable or disable RTS for a particular port. If RTS is disabled,

Typical Applications

Connect the IBM mainframe at your central office to several IBM controllers at a branch office across the country.

Share one modem among several PCs in an office to connect to the async mainframe in your company’s computer room.

1

11/2/2005

#10920

 

 

Image 1
Contents PORT, 4-PORT, and 8-PORT RS-232 Data Sharers Typical ApplicationsRS-232 Data Sharers Technically Speaking
Related manuals
Manual 68 pages 25.69 Kb Manual 2 pages 48.68 Kb Manual 3 pages 62.87 Kb Manual 17 pages 29.01 Kb Manual 3 pages 56.04 Kb Manual 28 pages 51.61 Kb Manual 4 pages 387 b

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.