National Instruments GPIB-BUF - Manuals

Contents GPIB-BUF User Manual viii © National Instruments Corp. Appendix AHardware Specifications .............................................................. A-1 Appendix BCustomer Communication .......................................................... B-1 Glossary .................................

© National Instruments Corp. ix GPIB-BUF User Manual About This Manual Introduction to the GPIB-BUF The GPIB-BUF is one of National Instruments family of MicroGPIBproducts. These products are high-performance, low-cost IEEE 488support items, packaged in small all-metal cases, capable of being rackmo...

About This Manual GPIB-BUF User Manual x © National Instruments Corp. Conventions Used in This Manual The following conventions are used in this manual. italic Italic text denotes emphasis, a cross reference,or an introduction to a key concept. bold italic Bold italic text denotes a note, caution, o...

© National Instruments Corp. 1-1 GPIB-BUF User Manual Chapter 1Description of the GPIB-BUF This chapter contains general information about the National InstrumentsGPIB-BUF and lists components and accessories. Introduction The GPIB-BUF, shown in Figure 1-1, is an IEEE 488 (GPIB) data bufferwhich inc...

Description of the GPIB-BUF Chapter 1 GPIB-BUF User Manual 1-2 © National Instruments Corp. The GPIB-BUF has two isolated GPIB ports and is placed in-line between aGPIB system and a single, slower GPIB device (usually a printer or plotter).The GPIB-BUF automatically buffers all device-dependent data...

Chapter 1 Description of the GPIB-BUF © National Instruments, Corp. 1-3 GPIB-BUF User Manual The GPIB-BUF Front Panel The power switch and six Light Emitting Diodes (LEDs) are mounted onthe GPIB-BUF front panel. Figure 1-2 shows the front panel of theGPIB -BUF. GPIB-BUF IEEE-488 IEEE-488 BUFFER POWE...

Description of the GPIB-BUF Chapter 1 GPIB-BUF User Manual 1-4 © National Instruments Corp. The GPIB-BUF Rear Panel Figure 1-3 shows the power cable and the GPIB cables connected to the rearpanel of the GPIB-BUF. Figure 1-3. The GPIB-BUF Rear Panel The GPIB Connectors The GPIB-BUF has two GPIB conne...

Installation and Operation Chapter 2 GPIB-BUF User Manual 2-2 © National Instruments Corp. Installation Install the GPIB-BUF according to the following procedure. 1. Inspect the GPIB-BUF. 2. Verify the voltage requirement. 3. Configure th e operating parameters. 4. Connect the cables. 5. Power on th...

Chapter 2 Installation and Operation © National Instruments Corp. 2-3 GPIB-BUF User Manual Step 3. Configure the Operating Parameters The GPIB-BUF is shipped from the factory configured to operate at a GPIBprimary address of 5 with the SRQ-on-empty function disabled and deviceclear recognition and p...

Installation and Operation Chapter 2 GPIB-BUF User Manual 2-4 © National Instruments Corp. Set Configuration Switches Use the DIP switch at location U38 on the printed circuit board to configurethe GPIB primary address and operating modes of the GPIB-BUF. The DIPswitch has eight configuration switch...

Chapter 2 Installation and Operation © National Instruments Corp. 2-5 GPIB-BUF User Manual Table 2-2. Configuration Parameters for Switches 4 through 8 Switches 4 5 6 7 8 Indication OFF OFF OFF OFF OFF Sets GPIB primary address 0 OFF OFF OFF OFF ON Sets GPIB primary address 1 OFF OFF OFF ON OFF Sets...

Installation and Operation Chapter 2 GPIB-BUF User Manual 2-6 © National Instruments Corp. Table 2-2. Configuration Parameters for Switches 4 through 8 (Continued) Switches 4 5 6 7 8 Indication ON OFF ON OFF OFF Sets GPIB primary address 20 ON OFF ON OFF ON Sets GPIB primary address 21 ON OFF ON ON ...

Chapter 2 Installation and Operation © National Instruments Corp. 2-7 GPIB-BUF User Manual Step 5. Power on the Unit Power on your target device then power on your GPIB-BUF by using thefront panel rocker switch. The POWER LED should light immediately andthe READY indicator should blink while the uni...

© National Instruments Corp. 3-1 GPIB-BUF User Manual Chapter 3Technical Information This chapter contains a more detailed description of the operation of theGPIB-BUF. The timing characteristics of the parallel port are provided inthis chapter. The GPIB-BUF is actually a powerful 8-bit microcomputer...

Technical Information Chapte r 3 GPIB-BUF User Manual 3-2 © National Instruments Corp. If the SRQ-on-empty feature is enabled, the GPIB-BUF asserts the ServiceRequest (SRQ*) signal on the GPIB IN port. The SRQ condition can beused to signal the GPIB Controller that the GPIB-BUF is powered on andread...

Chapter 3 Technical Information © National Instruments Corp. 3-3 GPIB-BUF User Manual DMA Controller transfers the data directly to the internal data bufferwithout processor intervention. Thus, GPIB transfer rates as high as 900kbytes/s are possible. The GPIB-BUF turns off the EMPTY indicator assoon...

Technical Information Chapte r 3 GPIB-BUF User Manual 3-4 © National Instruments Corp. When receiving data while addressed as a GPIB Listener, the GPIB-BUFbuffers the state of the EOI* signal line along with the data byte itcorresponds to using an additional on-board RAM module. Therefore, theGPIB-B...

Chapter 3 Technical Information © National Instruments Corp. 3-7 GPIB-BUF User Manual Internally, the local Individual Status (ist) bit of the GPIB-BUF is reset to 0when the internal data buffer is empty of data. It is set to 1 when theinternal data buffer is not empty. Therefore, after the GPIB Con...

Technical Information Chapte r 3 GPIB-BUF User Manual 3-8 © National Instruments Corp. Special Note About Timeouts If your current GPIB system relies on a timeout method to ensure a non-functioning GPIB device does not hang the bus indefinitely, then it may benecessary to adjust or disable the time ...

Chapter 1 Description of the GPIB-232CV © National Instruments Corp. 1-1 GPIB-232CV User Manual Appendix AHardware Specifications This appendix lists the electrical, environmental, and physical specifications of the GPIB-BUF. Table A-1. Electrical Characteristics Characteristic Specification Power S...

© National Instruments Corp. B-1 GPIB-BUF User Manual Appendix BCustomer Communication For your convenience, this appendix contains forms to help you gather theinformation necessary to help us solve technical problems you might have as wellas a form you can use to comment on the product documentatio...

Technical Support Form Technical support is available at any time by fax. Include the informationfrom your configuration form. Use additional pages if necessary. Name Company Address Fax ( ) Phone ( ) Computer brand Model Processor Operating system Speed MHz RAM MB Display adapter Mouse yes no Other...

Hardware Configuration Form Record the settings and revisions of your hardware on the line to the right ofeach item. Update this form each time you revise your hardwareconfiguration, and use this form as a reference for your currentconfiguration. National Instruments Products • GPIB-BUF Revision • S...

Documentation Comment Form National Instruments encourages you to comment on the documentationsupplied with our products. This information helps us provide qualityproducts to meet your needs. Title: GPIB-BUF User Manual Edition Date: February 1994 Part Number: 320125-01 Please comment on the complet...

© National Instruments Corp. G-1 GPIB-BUF User Manual Glossary Prefix Meaning Value µ - micro 10 -6 m- milli- 10 -3 k- kilo- 10 3 M- mega- 10 6 ° degrees % percent A amperes AC alternating current ANSI American National Standards Institute C Celsius EMI electromagnetic interference FCC Federal Comm ...