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National Instruments GPIB-100A manual

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Table of contents for the manual

  • Page 1

    © Copyright 1985, 1991 National Instruments Corporation. All Rights Reserved. GPIB-100A User Manual March 1990 Edition Part Number 320063-01[...]

  • Page 2

    National Instruments Corporation 6504 Bridge Point Parkway Austin, TX 78730-5039 (512) 794-0100 (800) IEEE-488 (toll-free U.S. and Canada) Technical support fax: (512) 794-5678[...]

  • Page 3

    Limited Warranty The GPIB-100A is warranted against defects in materials and workmanship for a period of two years from the date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace equipment that proves to be defective during the warranty period. This warranty includes parts and [...]

  • Page 4

    FCC/DOC Radio Frequency Interference Compliance This equipment generates and uses radio frequency energy and, if not installed and used in strict accordance with the instructions in this manual, may cause interference to radio and television reception. This equipment has been tested and found to comply with (1) the limits for a Class A computing de[...]

  • Page 5

    © National Instruments Corporation v GPIB-100A User Manual Preface Organization of the Manual This manual is divided into the following chapters: Chapter 1, Description of the GPIB-100A , contains a brief description of the GPIB-100A Bus Extender and how it is used. This section also lists all components and accessories. In addition, it provides s[...]

  • Page 6

    Preface GPIB-100A User Manual v i © National Instruments Corporation Abbreviations Used in the Manual The following abbreviations are used in the text of this manual. C centigrade F Fahrenheit Hz hertz in. inch kbytes thousand bytes m meter m A milliamperes Mbytes million bytes m m millimeter µ sec microsecond nsec nanosecond sec second V volts V[...]

  • Page 7

    © National Instruments Corporation v i i GPIB-100A User Manual Contents Chapter 1 Description of the GPIB-100A ....................................................................................... 1-1 Introduction................................................................................................................... ... 1-1 GPIB-100A [...]

  • Page 8

    Contents GPIB-100A User Manual viii © National Instruments Corporation Appendix A Operation of the GPIB ....................................................................................................... A-1 History of the GPIB......................................................................................................... A-1 Types of[...]

  • Page 9

    Contents © National Instruments Corporation ix GPIB-100A User Manual Figures Figure 1-1. The Model GPIB-100A Bus Extender .................................................................. 1-1 Figure 1-2. Typical GPIB-100A Extension System (Physical Configuration) ........................ 1-2 Figure 1-3. Typical GPIB-100A Extension System (Logical[...]

  • Page 10

    © National Instruments Corporation 1- 1 GPIB-100A User Manual Chapter 1 Description of the GPIB-100A Introduction The high-speed GPIB-100A Bus Extender (Figure 1-1) is used in pairs with a special parallel data transmission cable to connect two separate GPIB or IEEE-488 bus systems in a functionally transparent manner. Figure 1-1. The Model GPIB-1[...]

  • Page 11

    Description of the GPIB-100A Chapter 1 GPIB-100A User Manual 1 - 2 © National Instruments Corporation extension. And because the GPIB-100A is a functionally transparent extender, the same GPIB communications and control programs that work with an unextended system will work unmodified with an extended system. There is one minor exception to this t[...]

  • Page 12

    Chapter 1 Description of the GPIB-100A © National Instruments Corporation 1- 3 GPIB-100A User Manual GPIB-100A Specifications The following tables show the system configuration; the performance, operating, electrical, environmental, and physical characteristics of the GPIB-100A, as well as providing a list of available GPIB-100A components and acc[...]

  • Page 13

    Description of the GPIB-100A Chapter 1 GPIB-100A User Manual 1 - 4 © National Instruments Corporation Table 1-2. Performance Characteristics Characteristic Specification speed 250 to 135 kbytes/sec (approximately 4 µ sec per byte degraded at 10.5 nsec per meter of distance) no limitation to device speeds when there are no listeners on remote side[...]

  • Page 14

    Chapter 1 Description of the GPIB-100A © National Instruments Corporation 1- 5 GPIB-100A User Manual Table 1-4. Electrical Characteristics Characteristic Specification GPIB interface circuit duplex transceivers with open collector drivers (MC3441A) transmission interface RS-422 drivers and receivers circuit (MC3487 and AM26LS32) connected with pat[...]

  • Page 15

    Description of the GPIB-100A Chapter 1 GPIB-100A User Manual 1 - 6 © National Instruments Corporation Table 1-6. Physical Characteristics Characteristic Specification case style C S 2 size 3.5 x 8.5 x 13 in. (89 x 216 x 330 mm) case material UL94V-0 flame retardant polystyrene Dow 60875 F or equivalent rack mounting single or dual kits available G[...]

  • Page 16

    © National Instruments Corporation 2- 1 GPIB-100A User Manual Chapter 2 Installation Inspection Inspect the shipping container and contents for evidence of physical damage or stress. If damage is discovered and appears to have been caused in shipment, file a claim with the carrier. If the equipment is damaged, do not attempt to operate it before c[...]

  • Page 17

    Installation Chapter 2 GPIB-100A User Manual 2 - 2 © National Instruments Corporation Grounding Configuration A U.S. standard three-wire power cable is provided with the GPIB-100A. When connected to a power source, this cable connects the equipment chassis to the power ground. The GPIB-100A is shipped from the factory with chassis and power ground[...]

  • Page 18

    © National Instruments Corporation 3- 1 GPIB-100A User Manual Chapter 3 Configuration and Operation Users who are unfamiliar with the GPIB should first read Appendix A, Operation of the GPIB , to become familiar with GPIB terminology and protocol. In the following discussions, the terms local and remote refer to certain states of the two GPIB- 100[...]

  • Page 19

    Configuration and Operation Chapter 3 GPIB-100A User Manual 3 - 2 © National Instruments Corporation Talker/Listener (TL) Mode There is no Controller and only one Talker in the TL mode of operation, sometimes called talk only mode. Usually, there is just one Listener as well. In the TL mode, the System and Active Controller states remain inactive [...]

  • Page 20

    Chapter 3 Configuration and Operation © National Instruments Corporation 3- 3 GPIB-100A User Manual Buffered PPR Mode (Approach 1) Most Controllers pulse the IDY signal for a period of time exceeding 2 µ sec and expect a response within that time. When used with this type of Controller, the GPIB-100A should be left in the Buffered PPR mode as set[...]

  • Page 21

    Configuration and Operation Chapter 3 GPIB-100A User Manual 3 - 4 © National Instruments Corporation Mixed Mode Operation If there are multiple Controllers and all of the same type are located on the same side of the extension, the two GPIB-100A units can be set to Unbuffered and Buffered PPR modes accordingly. A. Unbuffered PPR Mode B. Buffered P[...]

  • Page 22

    © National Instruments Corporation 4- 1 GPIB-100A User Manual Chapter 4 Theory of Operation Diagrams Figure 4-1 shows a block diagram for the GPIB-100A. Refer to Appendix B for GPIB-100A schematic diagrams and Appendix C for the GPIB-100A parts locator diagram. Figure 4-1. GPIB-100A Block Diagram Power-On When the GPIB-100A is powered on, a reset [...]

  • Page 23

    Theory of Operation Chapter 4 GPIB-100A User Manual 4 - 2 © National Instruments Corporation System Controller Detection PON initializes FFs U22A and U12A to clear the Remote System Controller (RSC) and Local System Controller (LSC) signals. When Interface Clear (IFC) is received from the local side via GPIB transceiver U2B, the LSC FF is set on t[...]

  • Page 24

    Chapter 4 Theory of Operation © National Instruments Corporation 4- 3 GPIB-100A User Manual • Whenever a change in the state of the local ATN signal is caused by a pulse created via U38E, U24B/C, and associated RC network. • While ATN or DAV is received from the local side (U34A/D). • During a parallel poll (U38F and U34A). Before the LS FF [...]

  • Page 25

    Theory of Operation Chapter 4 GPIB-100A User Manual 4 - 4 © National Instruments Corporation the remote poll response into register U16. Clearing U45B unasserts XEOI and XATN, and after they propagate to the remote side, BUS PP is also unasserted. This causes FF U36D to be cleared as well, terminating the parallel poll process and removing the NRF[...]

  • Page 26

    © National Instruments Corporation A- 1 GPIB-100A User Manual Appendix A Operation of the GPIB History of the GPIB The GPIB is a link, bus, or interface system through which interconnected electronic devices communicate. Hewlett-Packard invented the GPIB, which they call the HP-IB, to connect and control programmable instruments manufactured by th[...]

  • Page 27

    Operation of the GPIB Appendix A GPIB-100A User Manual A - 2 © National Instruments Corporation The role of the GPIB Controller can also be compared to the role of the computer's CPU, but a better analogy is to the switching center of a city telephone system. The switching center (Controller) monitors the communications network (GPIB). When t[...]

  • Page 28

    Appendix A Operation of the GPIB © National Instruments Corporation A- 3 GPIB-100A User Manual Figure A-1 shows the arrangement of these signals on the GPIB cable connector. DIO1* DIO2* DIO3* DIO4* EOI* DAV* NRFD* NDAC* IFC* SRQ* ATN* SHIELD DIO5* DIO6* DIO7* DIO8* REN* GND (TW PAIR W/DAV*) GND (TW PAIR W/NRFD*) GND (TW PAIR W/NDAC*) GND (TW PAIR [...]

  • Page 29

    Operation of the GPIB Appendix A GPIB-100A User Manual A - 4 © National Instruments Corporation NDAC (not data accepted) NDAC indicates when a device has or has not accepted a message byte. The line is driven by all devices when receiving commands and by Listeners when receiving data messages. DAV (data valid) DAV tells when the signals on the dat[...]

  • Page 30

    Appendix A Operation of the GPIB © National Instruments Corporation A- 5 GPIB-100A User Manual Physical and Electrical Characteristics Devices are usually connected with a cable assembly consisting of a shielded 24-conductor cable with both a plug and receptacle at each end. This design allows devices to be connected in either a linear or a star c[...]

  • Page 31

    Operation of the GPIB Appendix A GPIB-100A User Manual A - 6 © National Instruments Corporation Figure A-3. Star Configuration of GPIB Devices The standard connector is the Amphenol or Cinch Series 57 MICRORIBBON or AMP CHAMP type. An adapter cable using non-standard cable and/or connector is used for special interconnect applications. The GPIB us[...]

  • Page 32

    Appendix A Operation of the GPIB © National Instruments Corporation A- 7 GPIB-100A User Manual Configuration Restrictions To achieve the high data transfer rate that the GPIB is designed for, the physical distance between devices and the number of devices on the bus is limited. The following restrictions are typical: • A maximum separation of 4 [...]

  • Page 33

    © National Instruments Corporation B- 1 GPIB-100A User Manual Appendix B Schematic Diagram This appendix contains the schematic diagram for the GPIB-100A.[...]

  • Page 34

    [...]

  • Page 35

    © National Instruments Corporation C-1 GPIB-100A User Manual Appendix C GPIB-100A Parts Locator Diagram This appendix contains the parts locator diagram for the GPIB-100A. The parts locator diagram shows the locations of the GPIB-100A configuration jumpers and switches. Figure C-1. GPIB-100A Parts Locator Diagram[...]

  • Page 36

    © National Instruments Corporation D - 1 GPIB-100A User Manual Appendix D Cable Assembly Wire List This appendix contains the wire list for the GPIB-100A Transmission Cable.[...]

  • Page 37

    Table D-1. Cable Assembly Wire List[...]

  • Page 38

    © National Instruments Corporation E- 1 GPIB-100A User Manual Appendix E Multiline Interface Command Messages The following tables are multiline interface messages (sent and received with ATN TRUE).[...]

  • Page 39

    Multiline Interface Command Messages Appendix E GPIB-100A User Manual E - 2 © National Instruments Corporation Multiline Interface Messages H e x Oct D e c ASCII M s g H e x Oct D e c ASCII M s g 00 0 00 0 NUL 20 0 40 32 S P MLA0 01 00 1 1 SO H G T L 21 04 1 33 ! MLA1 02 0 02 2 STX 22 0 42 34 " MLA2 03 00 3 3 ET X 23 04 3 35 # MLA3 04 00 4 4 [...]

  • Page 40

    Appendix E Multiline Interface Command Messages © National Instruments Corporation E- 3 GPIB-100A User Manual Multiline Interface Messages H e x Oct D e c ASCII M s g H e x Oct D e c ASCII M s g 40 10 0 64 @ MTA0 6 0 140 96 ` MSA0,PPE 41 10 1 65 A MTA1 61 1 41 97 a MSA1,PPE 42 10 2 66 B MTA2 62 142 98 b MSA2,PPE 43 10 3 67 C MTA3 63 143 99 c MSA3,[...]

  • Page 41

    © National Instruments Corporation F- 1 GPIB-100A User Manual Appendix F Mnemonics Key This appendix contains a mnemonics key that defines the mnemonics (abbreviations) used throughout this manual. Mnemonic Definition ASCII American Standard Code for Information Interchange A T N Attention C Controller CIC Controller-In-Charge Bit D A V Data Valid[...]

  • Page 42

    Mnemonics Key Appendix F GPIB-100A User Manual F- 2 © National Instruments Corporation Mnemonic Definition R E N Remote Enable R F D Ready for Data RR Remote Response R S Remote Source RS C Remote System Controller S R Q Service Request T Talker T L Talker/Listener TL C Talker/Listener/Controller (GPIB Adapter) T T L Transistor/Transistor Logic[...]

  • Page 43

    User Comment Form National Instruments encourages you to comment on the documentation supplied with our products. This information helps us provide quality products to meet your needs. Title: GPIB-100A User Manual Edition Date March 1990 Part Number: 320063-01 Please comment on the completeness, clarity, and organization of the manual. If you find [...]