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Summary of Contents for Black Box RS-232
- Page 1 © Copyright 1998. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...
- Page 2 Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 SUPPORT Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 INFORMATION Web site: www.blackbox.com • E-mail: info@blackbox.com...
- Page 3 FCC AND DOC/MDC STATEMENTS FEDERAL COMMUNICATIONS COMMISSION CANADIAN DEPARTMENT OF COMMUNICATIONS RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication.
- Page 4 RS-232 TO KEYBOARD CONVERTER NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura.
- Page 5 NOM STATEMENT 11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del tipo descrito en el instructivo de operación, o como se indique en el aparato. 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada.
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Page 6: Table Of Contents
RS-232 TO KEYBOARD CONVERTER Contents Chapter Page 1. Specifications ..................1 2. Introduction ................... 3 3. Configuration ..................4 4. Installation ....................5 5. Operation ....................7 5.1 Power-Up ..................7 5.2 Operating with No Translation ............7 5.3 Operating with ASCII Translation ..........7 5.4 The Self-Test .................. -
Page 7: Specifications
1. Specifications FCC Part 15 Class A, DOC Class/MDC classe A Compliance — Interfaces — IBM 6-pin keyboard, EIA RS-232 serial (DTE) Protocol/ Code Set — Keyboard: Scan modes 1, 2, or 3 (autosensed); Serial: Asynchronous; raw keyboard codes or ASCII (user-selectable) Data Format —... - Page 8 RS-232 TO KEYBOARD CONVERTER Leads/Signals Supported — Serial: Pins 2, 3, 4, 5, 7, and 20 (TD, RD, RTS, CTS, SGND, and DTR respectively) Power — From PC: +4.75 to +5.25 VDC, 50 mA 100,000 hours MTBF — Altitude Tolerance —...
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Page 9: Introduction
The data can be the RS-232 equivalent of raw keyboard codes, or it can be ASCII characters. When it converts the data to keyboard data, the Converter automatically senses which keyboard scan mode to use. -
Page 10: Configuration
RS-232 TO KEYBOARD CONVERTER 3. Configuration Before you install your RS-232 to Keyboard Converter, configure it by set- ting its DIP switch. (If you change the configuration settings later, you must power the Converter down and back up for the changes to take effect.) -
Page 11: Installation
PC or other keyboard-input device you want to connect to it. It should be within 50 ft. (15.2 m) of the RS-232 device you want to connect to it. It should also be close enough to any optional keyboard that you can plug the keyboard’s native cable directly into the... - Page 12 RS-232 TO KEYBOARD CONVERTER Table 4-1. Pinout of the Converter’s RS-232 Port Pin No. Signal Signal Name Direction Notes Abbrev. Transmit Data Receive Data Request to Send Held high Clear to Send SGND Signal Ground Data Terminal Ready Held high...
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Page 13: Operation
5.2 Operating with No Translation When positions 6 and 8 of the RS-232 to Keyboard Converter’s DIP switch are both set to OFF, the Converter accepts 8-bit data bytes as RS-232 input to its connector marked “RS-232.” The Converter changes the... -
Page 14: The Self-Test
RS-232 TO KEYBOARD CONVERTER 5.4 The Self-Test When position 6 of the RS-232 to Keyboard Converter’s DIP switch is set to ON and the Converter is powered down and then back up again, the Converter begins performing a barber-pole self-test and sends the test data (continuously repeating strings of the basic ASCII character set) out of its RS-232 port.) The first line of the self-test shows the Converter’s product... - Page 15 CHAPTER 4: Operation Table 5-1. ASCII to Keyboard-Scan-Code Conversion To read this table, read across to the first hex digit, then down to the second hex digit, to find the keyboard character represented by a particular ASCII code. For example, ASCII 6B will be converted to the keyboard code for lowercase “k.”...
- Page 16 RS-232 TO KEYBOARD CONVERTER This page covers “extended ASCII” codes 80 to DF. The Converter does not do anything with codes E0 to FF. The characters from C0 to CF, marked with an (N), are the characters generated by the numeric keypad.
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Page 17: Troubleshooting
6. Troubleshooting 6.1 First Steps If you have difficulty with the RS-232 to Keyboard Converter, first make sure that its DIP switch is set correctly and that all cables connected to it are firmly and securely attached at both ends. If these things are OK, have the Converter perform its self-test as described in Section 5.4. - Page 18 RS-232 TO KEYBOARD CONVERTER...
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