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Summary of Contents for Black Box IC095A
- Page 1 © Copyright 1999. 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 SUPPORT FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 INFORMATION Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...
- Page 4 TRADEMARKS TRADEMARKS USED IN THIS MANUAL Any trademarks used in this manual are acknowledged to be the property of the trademark owners.
- Page 5 IEEE 488 BUS EXTENDER AND IEEE 488 FIBER BUS EXTENDER 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 6 NOM STATEMENT 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada. 13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato.
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Page 7: Table Of Contents
Description ....................7 Abbreviations ....................8 What’s Included ....................9 3. Configuration......................10 Configuring the IEEE 488 Bus Extender (IC095A) ........10 3.1.1 Setting the Serial Baud Rate ............10 3.1.2 Serial Data Format Selection ............11 3.1.3 Serial Port Cabling ................12 IEEE 488 Fiber Bus Extender Configuration (IC096A) ......12 3.2.1 Overview ..................12... -
Page 8: Specifications
CHAPTER 1: Specifications 1. Specifications 1.1 IEEE 488 Bus Extender (IC095A) IEEE 488-1978 — Implementation: Proprietary transparent control and data transfers Standard IEEE 488 connector with Connector: metric studs Serial Interface — EIA RS-422A: Balanced voltage on TxD and RxD... -
Page 9: Ieee 488 Fiber Bus Extender (Ic096A)
IEEE 488 BUS EXTENDER AND IEEE 488 FIBER BUS EXTENDER 32 to 122°F (0 to 50°C) Temperature — Humidity — Up to 70% relative humidity Power — 105- to 125-VAC or 210- to 250-VAC; 50-60 Hz, 10 VA max. Size — 2.7"H x 5.5"W x 7.4"D (6.9 x 14 x 18.8 cm) Weight —... -
Page 10: Introduction
“local” bus. The bus to which control is extended is the “remote” bus. An Extender is required on each bus for IEEE bus extension. The IEEE 488 Bus Extender (IC095A) transmits RS-422 data between Extenders. RS-422, a differential serial data format, provides high noise immunity and long distances using low-cost twisted-pair wire. -
Page 11: Abbreviations
IEEE 488 BUS EXTENDER AND IEEE 488 FIBER BUS EXTENDER 2.2 Abbreviations The following IEEE 488 abbreviations are used throughout this manual. addr n IEEE bus address “n” Attention line Controller Active Controller Carriage Return data Data String Device Clear Group Execute Trigger Go To Local Listener Active... -
Page 12: What's Included
Every Extender is shipped with a power supply and this user guide. WARNING! The Extender requires a regulated external power supply with a maximum output of 5.25 volts. Using voltages above this level will result in damage to the interface. Only use power supplies provided by Black Box. -
Page 13: Configuration
IEEE 488 BUS EXTENDER AND IEEE 488 FIBER BUS EXTENDER 3. Configuration and Installation 3.1 Configuring and Installing the IEEE 488 Bus Extender (IC095A) This section describes the configuration necessary for the RS-422 IEEE 488 Bus Extenders. If you are using the fiberoptic extenders (IC096A), refer to Section 3.2. -
Page 14: Serial Data Format Selection
CHAPTER 3: Configuration and Installation Remove the screws located in each corner of the rear panel. Hold the case firmly and pull the rear panel outward, noting the slot location of the main circuit board. Set the DIP switches for the baud rate you want (use Figure 3-1 as a guide) and reassemble the unit. -
Page 15: Serial Port Cabling
3.2.1 O VERVIEW This section describes the configuration necessary for the fiberoptic IEEE 488 Fiber Bus Extenders. If you are using the RS-422 extenders (IC095A), refer to Section 3.1. Two Extenders are required for bus extension, with one connected directly to the local IEEE bus, and the other connected to the remote IEEE bus. -
Page 16: Installation And Maintainance
CHAPTER 3: Configuration and Installation 3.2.2 I NSTALLING AND AINTAINING IBEROPTIC ONNECTIONS The Extender requires duplex fiberoptic cabling. Most cable manufacturers mark the two connectors at each end of the duplex cable with a “T” and an “R” to distinguish which to connect to the transmitter (T) and which to connect to the receiver (R). -
Page 17: Operation
IEEE 488 BUS EXTENDER AND IEEE 488 FIBER BUS EXTENDER 4. Operation 4.1 Powering the System After configuring the Extenders and attaching the serial port or fiberoptic cabling, plug the power-supply connector into the rear jack on the interface. CAUTION Always connect the power supply to the Extender first, then to the AC line power. -
Page 18: Parallell Poll Response Time
CHAPTER 4: Operation If the Extender seems to be operating properly, turn off the Extender’s power switch and connect the other IEEE devices to each of the Extender’s IEEE ports. Connect the local Extender to the remote Extender via the serial or fiberoptic cable. - Page 19 IEEE 488 BUS EXTENDER AND IEEE 488 FIBER BUS EXTENDER Table 4-1. Extender Parallel Poll Response Times The minimum time the controller should wait with the IEEE 488 Fiber Bus Extender between consecutive Parallel Polls is 1 millisecond.
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Page 20: Ieee 488 Primer
CHAPTER 5: IEEE 488 Primer 5. IEEE 488 Primer 5.1 History The IEEE 488 bus is an instrumentation communication bus adopted by the Institute of Electrical and Electronic Engineers in 1975 and revised in 1978. The IEEE 488 Bus Extender and the IEEE 488 Fiber Bus Extender conform to this most recent revision designated IEEE 488-1978. - Page 21 IEEE 488 BUS EXTENDER AND IEEE 488 FIBER BUS EXTENDER being Addressed to Listen. This device is then referred to as an Active Listener. Devices which are to ignore the data message are instructed to Unlisten. The reason some devices are instructed to Unlisten is quite simple. Suppose a college instructor is presenting the day’s lesson.
- Page 22 CHAPTER 5: IEEE 488 Primer Figure 5-1. IEEE 488 Bus Structure.
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Page 23: Send It To My Address
IEEE 488 BUS EXTENDER AND IEEE 488 FIBER BUS EXTENDER 5.3 Send It to My Address In the previous discussion, the terms Addressed to Talk and Addressed to Listen were used. These terms require some clarification. The IEEE 488 standard permits up to 15 devices to be configured within one system. -
Page 24: Handshake Lines
CHAPTER 5: IEEE 488 Primer 5.4.3 R (REN) EMOTE NABLE When the System Controller sends the REN command, bus devices will respond to remote operation. Generally, the REN command should be issued before any bus programming is attempted. Only the System Controller has control of the Remote Enable line. -
Page 25: Data Lines
IEEE 488 BUS EXTENDER AND IEEE 488 FIBER BUS EXTENDER 5.5.2 N (NRFD) EADY FOR This line is used by the Listeners to inform the Talker when they are ready to accept new data. The Talker must wait for each Listener to unassert this line (high), which they will do at their own rate when they are ready for more data. - Page 26 CHAPTER 5: IEEE 488 Primer 5.7.2 L (LAG) ISTEN DDRESS ROUP There are 31 (0 to 30) listen addresses associated with this group. The 3 most significant bits of the data bus are set to 001 while the 5 least significant bits are the address of the device being told to listen.
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Page 27: More On Service Requests
IEEE 488 BUS EXTENDER AND IEEE 488 FIBER BUS EXTENDER 5.7.11 G (GET) ROUP XECUTE RIGGER This command usually signals a group of devices to begin executing a triggered action. This allows actions of different devices to begin simultaneously. (IEEE 488 command code: $08.) 5.7.12 T (TCT) -
Page 28: Serial Poll
CHAPTER 5: IEEE 488 Primer Controller to periodically inquire, “Are you done yet?” Instead, the Controller says, “Do what I told you to do and let me know when you’re done,” or “Tell me when something is wrong.” Since SRQ is a single-line command, there is no way for the Controller to determine which device requested the service without additional information. -
Page 29: Service Information
IEEE 488 BUS EXTENDER AND IEEE 488 FIBER BUS EXTENDER 6. Service Information 6.1 Theory of Operation At the heart of the IEEE 488 Bus Extender is a 6809 microprocessor (U101) supported by 8 KB of firmware EPROM (U102 [2764]) and 8 KB of static RAM (U103 [6264]). -
Page 30: Ieee 488 Bus Extender Board (Ic095A)
CHAPTER 6: Service Information 6.2 IEEE 488 Bus Extender Board (IC095A) -
Page 31: Ieee 488 Fiber Bus Extender Board (Ic096A)
IEEE 488 BUS EXTENDER AND IEEE 488 FIBER BUS EXTENDER 6.3 IEEE 488 Fiber Bus Extender Board (IC096A) -
Page 32: Calling Black Box
• Package it carefully. We recommend that you use the original container. • If you are shipping the Extender for repair, make sure you include everything that came in the original package. Before you ship, contact Black Box to get a Return Materials Authorization (RMA) number. -
Page 33: Appendix Character Codes And Ieee Multiline Messages
IEEE 488 BUS EXTENDER AND IEEE 488 FIBER BUS EXTENDER Appendix: Character Codes and IEEE Multiline Messages When reading this table, note that the codes listed in the upper-left corners are IEEE 488 command codes, the codes in the upper right corners are the ASCII representations, and the actual message is shown in the center of each block. - Page 34 NOTES NOTES...
- Page 35 NOTES NOTES NOTES NOTES NOTES...
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