Black Box RS-232 manual

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 JUNE 2000[...]

FOUR POR T RS-232 SERIAL INTERF ACE FEDERAL COMMUNICA TIONS COMMISSION AND INDUSTR Y CANADA RADIO FREQUENCY INTERFERENCE ST A TEMENTS This equipment generates, uses, and can radiate radio frequency energy a nd if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio co[...]

FOUR POR T RS-232 SERIAL INTERF ACE Contents Chapter Page 1. Specifications...................................................................................................1 2. Introduction ....................................................................................................2 2.1 Overview ...........................................[...]

1 CHAPTER 1: Specifications Protocol — Asynchronous Number of Ports — 4 Speed — IC111C: Up to 115.2 Kbps; IC181C: 460.8 kbps and higher Operation — RS-232 Connectors — DB37M on card; (1) 3-ft. (0.9-m) DB37F-to-4x DB25M octopus cable, included Maximum Distance — 50 ft. (15.2 m) @ 19.2 Kbps with 2500 pF max. cable capacitance (lower capac[...]

2 FOUR POR T RS-232 SERIAL INTERF ACE 2.1 Overview The Four Port RS-232 Serial Interface provides your PC system with four RS- 232 asynchronous ports. Connect to any device that uses the RS-232 protocol, such as modems, data-entry terminals, and plotters. The Serial Interface also includes a serial utility diskette with Seacom, a DOS interrupt and [...]

3 CHAPTER 2: Introduction 2.3 Features Listed below are the special features your Serial Interface offers. • Each port is independently addressable. • Eleven interrupt options, including AT interrupts, for simple integration into existing systems. • IRQs can be shared or individually set for each port. • Supports Interrupt Sharing—only on[...]

4 FOUR POR T RS-232 SERIAL INTERF ACE 2.4 T echnical Description The Four Port RS-232 Serial Interface provides four additional serial ports for terminals, modems, printers, etc. The Serial Interface can be configured as COM1: through COM4:, or as any other I/O address (up to 3FF Hex), providing total compatibility with most communications software[...]

5 CHAPTER 3: Address Selection NOTE Be sure to set the address selections and jumper options before installation. Each serial port on the Four Port RS-232 Serial Interface occupies 8 con- secutive I/O locations. DIP switch SW4 sets the base address for Port 1, SW3 for Port 2, SW2 for Port 3, and SW1 for Port 4. Be careful when selecting the base ad[...]

6 FOUR POR T RS-232 SERIAL INTERF ACE NOTE Be sure to set the address selections and jumper options before installation. The board contains several jumper straps for each port which must be set for proper operation. 4.1 Port Enable/Disable Each port on the Four Port RS-232 can be enabled or disabled with switch position 8 on the DIP switch. The por[...]

7 CHAPTER 4: Option Selection Any two or more ports can share a common IRQ by placing the jumpers on the same IRQ setting, and setting the appropriate selections at E1. Consult your particular software for IRQ selection. If no interrupt is desired, remove the jumper. NOTE IRQ 2 on AT class machines is not available. IRQ 9 is substituted in place of[...]

8 FOUR POR T RS-232 SERIAL INTERF ACE 4.2 Interrupt-Mode Options Jumper E5 selects the interrupt mode for each port. Each port must be set in the correct mode to ensure proper installation. “N” indicates the normal, single interrupt per port mode (Figure 4-2). “S” indicates the shared interrupt mode, which allows more than one port to acces[...]

9 Set jumper to “S” if you are using more than one Four Port RS-232 Serial Interface in a bus or you wish to remove the pull-down resistor completely for hardware compatibility. NOTE Setting the board in this configuration when it is not accompanied by a pull-down resistor will prevent the ports from triggering an interrupt. The factory default[...]

10 FOUR POR T RS-232 SERIAL INTERF ACE IMPOR T ANT You MUST set up the operating system BEFORE you physically install the Card. 5.1 Software Installation If you are installing an ISA adapter in DOS, OS/2 ® , or QNX, please refer to the appropriate directory on one of the Serial Utilities Disks for instructions. 5.1.1 W INDOWS 3.1 X Please refer to[...]

11 CHAPTER 5: Installation 5.2 Hardware Installation The ISA Card can be installed in any of the PC expansion slots. The Card contains several jumper straps for each port that you must set for proper operation. 1. Turn off PC power. Disconnect the power cord. 2. Remove the PC case cover. 3. Locate an available slot and remove the blank metal slot c[...]

12 FOUR POR T RS-232 SERIAL INTERF ACE U6 R9 U5 U14 U13 U12 U11 C9 C10 U17 C12 C11 U18 C15 C19 C13 C7 U10 C6 U9 PORT 1 C8 R3 R4 D3 SW3 C5 U8 E4 E5 12 4 M S N M S N R2 D2 C3 U15 + C14 P1 C4 U7 P2 PORT 2 PORT 3 PORT 4 PORT 1 SW4 A9 A3 ON=0 U4 PORT 1 PORT 2 PORT 3 U3 SW2 U2 PORT 4 SW1 U1 C1 C2 E3 PORT 2 E2 PORT 3 E1 PORT 4 R1 1 20 19 37 Y1 U16 P3 E 3.[...]

13 APPENDIX B: T roubleshooting By using the supplied serial utility diskette and following these simple steps, most common problems can be eliminated. 1) Identify all I/O adapters currently installed in your system. This includes your onboard serial ports, controller cards, and sound cards. The I/O address used by these adapters, as well as the IR[...]

1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746 © Copyright 2000. Black Box Corporation. All rights reserved.[...]