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OCTOBER 1999
IC156A-R2
TTL Converter
CUSTOMER SUPPORT INFORMATION
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
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com
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Table of Contents
Related Manuals for Black Box TTL
Summary of Contents for Black Box TTL
- Page 1 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 Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...
- Page 2 TTL CONVERTER 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. It...
- Page 3 TTL 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 4 TTL CONVERTER 10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor como radiadores, registros de calor, estufas u otros aparatos (incluyendo amplificadores) que producen calor. 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...
- Page 5 TTL CONVERTER TRADEMARKS The trademarks mentioned in this manual are the sole property of their owners.
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Page 6: Table Of Contents
3. Configuration ....... 9 3.1 Default TTL Logic Levels ....9 3.2 Opening the Case. -
Page 7: Specifications
“inverting” or “non-inverting” using internal jumpering Power Supply—None required; draws all necessary operating power from RS-232 and TTL data and control signals Temperature—32 to 122 °F (0 to 50 °C) Size—2.2"H x 2.1"W x 0.7"D (5.6 x 5.3 x 1.8 cm) -
Page 8: Introduction
(DCE) and a serial TTL interface (DTE). The RS-232 interface is presented on a DB25 female connector, while the TTL interface is presented on a DB25 male connector. Since it derives power from the data and control signals, the Converter requires no AC power or batteries for operation. - Page 9 • Passes TD & RD plus five control signals: CD, DTR, DSR, CTS & RTS • Data and control signals independently selectable for inverting/non-inverting • Interface powered—no AC required • RS-232 interface is a DB25 female, TTL interface is a DB25 male...
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Page 10: Configuration
TTL CONVERTER 3. Configuration The TTL Converter is very easy to use. Most applications require no configuration. Just plug it in and go! However, some TTL circuitry requires data and/or control signals to be inverted (opposite) from their normal conditions. Please read the section below to determine if the default settings will work for you. -
Page 11: Opening The Case
Chapter 4. The JP1 and JP2 jumpers on the TTL Converter are located on the PC board. To open the case, insert a small flathead screw driver or similar tool between the DB25 female connector and the lip of the case as shown in Figure 3-1. - Page 12 TTL CONVERTER Figure 3-1. Using a small screwdriver to open the TTL Converter case. Then gently twist the screwdriver to pop the case open as shown in Figure 3-2. Be careful not to damage the case or connector as you twist the screwdriver.
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Page 13: Changing The Jumper Straps
TTL CONVERTER 3.3 Changing the Jumper Straps Once you have opened the case of the TTL Converter, you will see two jumper straps located on the top side of the PC board (see Figure 3-3). RS-232 Side (Female) TTL Side (Male) Figure 3-3. -
Page 14: Jumper Switches Jp1 And Jp2
In most cases, you will NOT have to modify these settings. Consult the user manual of the TTL device or the device’s manufacturer before changing the settings on JP1 and JP2. Non-Inverted Data and Control Signals (Default Setting) - Page 15 TTL CONVERTER Table 3-2. Non-Inverted Data and Control. Signal Level Data Signals Control Signals 0 to 0.4 volts space active 2.4 to 5.0 volts mark inactive Inverted Data and Control Signals Position JP1 and JP2 horizontally on the jumper posts to select inverted data and control signals.
- Page 16 TTL CONVERTER Inverted Data and Non-Inverted Control Signals Position JP1 horizontally on the jumper posts and remove JP2 to select inverted data and non-inverted control signals. Figure 3-6 shows the position of the jumpers on the PC board. Table 3-4 shows the relative signal levels.
- Page 17 TTL CONVERTER Inverted Control and Non-Inverted Data Signals Position JP2 horizontally on the bottom jumper posts to select inverted control and non-invert data signals. Figure 3-7 shows the position of the jumpers on the PC board. Table 3-5 shows the relative signal levels.
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Page 18: Installation
TTL CONVERTER 4. Installation The TTL Converter is very simple to install. Just plug it in like a normal cable and you’re ready to go. NOTE The TTL Converter uses a DB25 female connector on the RS-232 interface and a DB25 male connector on the TTL Interface. -
Page 19: Appendix A: Interface Pin Assignments
Figure A-1. RS-232 Interface. 1-(FG) Frame Ground 2-(TD) Transmit Data 3-(RD) Receive Data 4-(RTS) Request to Send 5-(CTS) Clear to Send 6-(DSR) Data Set Ready Data Terminal Ready (DTR)-20 7-(SG) Signal Ground 8-(DCD) Data Carrier Detect 9-(DCV+) Aux Power Figure A-2. TTL Interface. -
Page 20: Appendix B: Block Diagram
TTL CONVERTER Appendix B: Block Diagram... - Page 21 © Copyright 1999. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...