©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

DATA BROADCAST UNITS

DB-8

 

 

 

 

 

 

 

CH7

CH8

PWR

 

 

 

 

 

CH5

CH6

 

 

 

 

 

 

CH4

 

 

 

 

 

 

CH3

 

 

 

 

 

 

CH2

 

 

 

 

 

 

CH1

 

 

 

 

 

 

COMP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

E

S

E

T

 

 

 

 

 

 

 

 

 

 

 

PARALLEL

DATA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UNIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BROADCAST/FALLBACK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M

O

D

 

E

 

 

 

P

O

R

T

 

 

 

 

SY

 

PO

W

 

E

R

 

 

 

 

 

C

H

 

 

D

E

 

 

 

 

 

 

BU

 

 

 

 

 

 

 

 

 

S

W

 

IT

M

O

 

 

B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

C

 

 

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

C

 

 

FB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DB-8/25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHANNEL

 

 

 

8

 

 

 

 

PWR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

5

6

 

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BUFFERED

DATA BROADCAST

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHANNEL

PORTS

 

 

8

PWR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

6

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

1

2

 

3

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MASTER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Send serial data to up to eight printers or terminals at once. Or send parallel data to two printers simultaneously.

Key Features

Data Broadcast Units: Fully regenerate an async host signal and broadcast it out to eight slave ports. Choose from DB25 or RJ-11 versions.

Buffered Data Broadcast Units:

Port buffering lets your connected devices receive data continu- ously, regardless of their speeds.

Parallel Data Broad- cast/Fallback Unit: Sends parallel data to two printers at once, or “falls back” for continuous data output.

If you want to transmit data to more than one printer or terminal at the same time, choose among our Data Broadcast Units, Buffered Data Broadcast Units, and Parallel Data Broadcast/ Fallback Unit. These solutions get the job done—without losing signal strength!

Data Broadcast Units

The Data Broadcast Units enable you to transmit data from any serial async device to up to eight printers, modems, or terminals simultaneously.

The Data Broadcast Units take the RS-232 signal from your async host, divide it among eight slave

ports, and then completely regen- erate and broadcast each of those new port signals to their respective devices.

There’s a model for DB25 cabling and one for RJ-11 cabling to fit your needs. The DB25 model is available in 115- or 230-VAC versions.

Buffered Data Broadcast Units

The Buffered Data Broadcast Units function in the same way as the Data Broadcast Units, but they also feature individually buffered ports. These let you send async data to devices operating at

various speeds. You can config- ure each port for word structure, baud rate, flow control, and DTE or DCE operation.

Versions are available for 115- or 230-VAC power.

Parallel Data Broadcast/

Fallback Unit

This unit lets you send parallel data to two printers simultaneous- ly, or designate a backup printer in case your primary printer fails.

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Black Box DB25 manual Data Broadcast Units

DB25 specifications

The Black Box DB25 is a versatile and essential connector known primarily for its applications in computer and telecommunications equipment. Characterized by its distinctive D-subminiature design, the DB25 connector has been a staple in the industry since the early days of computing. Its robust construction and reliability have made it a preferred choice for various devices where parallel data transmission is required.

One of the main features of the Black Box DB25 is its ability to handle a maximum of 25 pins, allowing for multiple data channels to be transmitted simultaneously. This configuration supports a variety of communication protocols, making it suitable for connecting printers, serial ports, network interface cards, and multiple peripheral devices. The connector's pin arrangement ensures ease of use while minimizing the chances of misalignment during connection.

The DB25 connector employs a robust locking mechanism that secures the connection, preventing accidental disconnection during operation. This feature is particularly beneficial in environments where devices are frequently connected and disconnected, or in situations that require long cable runs. The durability of the connector is further enhanced by its metal housing, which provides protection against physical damage and electromagnetic interference.

In terms of technology, the Black Box DB25 utilizes a traditional parallel communication scheme for data transfer. Although newer technologies have emerged, the DB25 remains relevant due to its simplicity and reliability. The connector supports data speeds typically up to 1 Mbps, which, while not competing with modern high-speed interfaces, is adequate for many legacy systems and applications.

Another characteristic of the Black Box DB25 is its compatibility with various cable types and assemblies. Users can find both shielded and unshielded versions of the DB25 cables, offering flexibility in terms of electromagnetic compatibility and protective measures against signal loss. The availability of male and female connectors further enhances its adaptability to various hardware configurations.

In conclusion, the Black Box DB25 connector is a reliable and durable solution for parallel data transmission needs. With its robust design, versatile applications, and compatibility with legacy systems, it continues to be a valuable asset for professionals in computing and telecommunications sectors, even amidst rapid technological advancements.