Measurement and Automation: GPIB & Bus Expansion - ADLINK TECHNOLOGY - #1

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4-1 www.adlinktech.com High-Performance IEEE-488 GPIB Interface Cards Features �¡ Fully compatible with the IEEE-488 standard �¡ Supports a 32-bit 3.3 V or 5 V PCI bus �¡ PXI specification Rev. 2.2 compliant (PXI-3488) �¡ Up to 1.5 MB/s data transfer rates �¡ Built-in FIFO for read/write operations �¡ Provides APIs compatible with NI-488.2 driver software* �¡ Supports industrial-standard VISA library �¡ Interactive utility for testing and diagnostics �¡ Operating Systems • Windows Vista/XP/2000/2003 Server �¡ Recommended Software • VB/VC++/BCB/Delphi • LabVIEW* • LabWindow/CVI* LPCI-3488A/PXI-3488 Introduction The IEEE-488 standard, also known as GPIB, is a bus interface that connects instruments with a computer to form an ATE system. GPIB was initially developed by Hewlett Packard and was recognized as an IEEE standard in 1978. The IEEE-488.1-1978 standard defines the convention for electrical and mechanical bus characteristics, as well as the state diagram for each bus function. In 1987, another standard was derived from the original IEEE-488.1-1978 and known as IEEE-488.2-1978. It was introduced to define data formats, common commands, and control protocols for instruments. In general, IEEE-488.1 defines hardware specifications, and IEEE-488.2 defines software specifications. The IEEE-488 standard has been widely accepted by instrument vendors over the past few decades. Today, GPIB is still the most popular interface between computer and instruments. 5system Management lines 3 handshake lines 8 data lines Instrument A Able to Talk, Listen and Control ex: Computer Instrument B Able to Talk and to Listen ex: Oscilloscoae Instrument C Able to Listen ex: Function Generator EOI IFC SRQ ATN REN DAV NRFD DI01-8 Handshake and data signals on the GPIB bus NDAC Linear instrument connection Star instrument connection Instrument A Instrument B Instrument C Instrument A Instrument C Instrument D Instrument B ADLINK GPIB Data Xfer Rate (Small Block Data) 200 400 600 800 1000 Data Xfer Rate (KB/s) Block Size (Bytes) 0 200 400 600 800 1000 ADLINK GPIB Data Xfer Rate (Large Block Data) Data Xfer Rate (KB/s) Block Size (KBytes) 0 400 600 200 1000 800 1200 1400 1600 15 30 45 60 75 90 105 120 135 150 ADLINK's LPCI-3488A and PXI-3488 GPIB controller interface cards are fully compatible with the IEEE-488.2 instrumentation control and communication standard and are capable of controlling up to 14 stand-alone instruments via IEEE-488 cables. The LPCI-3488A and PXI-3488 are designed to meet the requirements for high performance and maximum programming portability. The LPCI-3488A is developed using ADLINK's intellectual property in FPGAs which incorporates a GPIB controller, provides reliable GPIB bus control capability, and supports a transfer rate up to 1.5 MB/s. With APIs that are compatible with NI-488.2* driver software and VISA support, the LPCI-3488A and PXI-3488 offer the best compatibility with your existing applications and instrument drivers Performance ADLINK's expertise in PCI and PXI interface cards was leveraged when developing these newly designed GPIB interface card. The LPCI-3488A, which is the low-profile PCI form factor, supports both 3.3 V and 5 V PCI buses and can be adapted to most industrial and desktop computers. The PXI-3488 is compliant with PXI specification Rev. 2.2 and can be used with most PXI and CompactPCI system. A built-in FIFO is placed between the GPIB bus and PCI controller to buffer GPIB read/write operations. This FIFO eliminates the gap between the slow GPIB bus (~1.5 MB/s) and the fast PCI bus (132 MB/s), and dramatically increases overall system performance. 5system Management lines 3 handshake lines 8 data lines Instrument A Able to Talk, Listen and Control ex: Computer Instrument B Able to Talk and to Listen ex: Oscilloscoae Instrument C Able to Listen ex: Function Generator EOI IFC SRQ ATN REN DAV NRFD DI01-8 Handshake and data signals on the GPIB bus NDAC Linear instrument connection Star instrument connection Instrument A Instrument B Instrument C Instrument A Instrument C Instrument D Instrument B ADLINK GPIB Data Xfer Rate (Small Block Data) 200 400 600 800 1000 Data Xfer Rate (KB/s) Block Size (Bytes) 0 200 400 600 800 1000 ADLINK GPIB Data Xfer Rate (Large Block Data) Data Xfer Rate (KB/s) Block Size (KBytes) 0 400 600 200 1000 800 1200 1400 1600 15 30 45 60 75 90 105 120 135 150 LPCI-3488A PXI-3488