Page 4 - FCC/DOC Radio Frequency Interference Compliance
FCC/DOC Radio Frequency Interference Compliance This equipment generates and uses radio frequency energy and, if not installed and used in strictaccordance with the instructions in this manual, may cause interference to radio and televisionreception. This equipment has been tested and found to compl...
Page 5 - Preface; Introduction to the GPIB-COM; Related Documents
© National Instruments Corporation v GPIB-COM User Manual Preface Introduction to the GPIB-COM The GPIB-COM is a high-performance talk/listen interface board that makes communicationpossible between IEEE-488 devices and IBM personal computers and compatibles (hereafterreferred to as PCs) equipped wi...
Page 6 - Abbreviations Used in This Manual
Preface GPIB-COM User Manual v i © National Instruments Corporation Abbreviations Used in This Manual The following abbreviations are used in the text of this manual. ≤ is less than or equal to ≥ is greater than or equal to ± plus or minus A ampere C Celsius hex hexadecimal in. inch I/O input/output...
Page 7 - Contents
© National Instruments Corporation v i i GPIB-COM User Manual Contents Section OneIntroduction .......................................................................................................................... 1-1 GPIB-COM Characteristics ........................................................
Page 9 - Figures
Contents © National Instruments Corporation ix GPIB-COM User Manual Figures Figure 1-1. GPIB-COM Board ................................................................................................ 1-2 Figure 2-1. GPIB-COM Parts Locator Diagram ........................................................
Page 10 - GPIB-COM Characteristics
© National Instruments Corporation 1-1 GPIB-COM User Manual Section OneIntroduction This section contains a brief description of the GPIB-COM interface and a list of its characteristicsand components. GPIB-COM Characteristics The National Instruments GPIB-COM is a high-performance talk/listen interf...
Page 11 - What Your Kit Should Contain; Item; Note: The GPIB-COM Diagnostic Test Diskette contains the
Introduction Section One GPIB-COM User Manual 1-2 © National Instruments Corporation Figure 1-1 shows the GPIB-COM interface board. Figure 1-1. GPIB-COM Board What Your Kit Should Contain Your kit should contain the following components: Item Part Number GPIB-COM interface board 180750-01 GPIB-COM U...
Page 12 - Optional Equipment
Section One Introduction © National Instruments Corporation 1-3 GPIB-COM User Manual Optional Equipment Item Part Number Double-Shielded Cables: GPIB Type X2 Cable - 1 m 763061-01 GPIB Type X2 Cable - 2 m 763061-02 GPIB Type X2 Cable - 4 m 763061-03 * In order to meet FCC emission limits for a Class...
Page 13 - Configuration
© National Instruments Corporation 2-1 GPIB-COM User Manual Section TwoConfiguration and Installation This section contains information on how to configure and install the GPIB-COM into yoursystem. Configuration Figure 2-1 shows the locations of the GPIB-COM configuration jumpers and switches. Figur...
Page 14 - Note: DOS and BIOS only recognize base addresses 3F8 and 2F8.
Configuration and Installation Section Two GPIB-COM User Manual 2-2 © National Instruments Corporation When installing the GPIB-COM you must determine which serial port the GPIB-COM board willrespond to and select the appropriate base address and interrupt level. The GPIB-COM can beconfigured to one...
Page 15 - Name of Port; Switch and Jumper Settings; Default; Base I/O Address and Interrupt Selection
Section Two Configuration and Installation © National Instruments Corporation 2-3 GPIB-COM User Manual Table 2-1 shows the standard base I/O address and interrupt level for each serial port. Table 2-1. IBM PC Serial Port Adapters Name of Port Base I/O Address (hex) Interrupt Level Serial Port 1 3F8 ...
Page 17 - Talk/Listen Address and Special Function Selection
Section Two Configuration and Installation © National Instruments Corporation 2-5 GPIB-COM User Manual Talk/Listen Address and Special Function Selection The GPIB-COM interface board has eight onboard DIP switches you can use to configure theGPIB controller responsibilities. In the talk/listen mode,...
Page 19 - Installation
Section Two Configuration and Installation © National Instruments Corporation 2-7 GPIB-COM User Manual Figure 2-6 shows the switch configuration for REN* asserted, IFC* disabled, and SRQ* disabled. Key = side you must press down for REN* ON, IFC* OFF, and SRQ* OFF; Off = 1; On = 0. This side down fo...
Page 20 - Special Considerations When Using the GPIB-COM
Configuration and Installation Section Two GPIB-COM User Manual 2-8 © National Instruments Corporation 7. Check the installation. 8. Replace the expansion slot cover of your computer. 9. Connect the GPIB cable to the GPIB-COM. Special Considerations When Using the GPIB-COM The GPIB-COM does not supp...
Page 21 - The GPIB-COM Interface
© National Instruments Corporation 3-1 GPIB-COM User Manual Section ThreeFunction Description This section contains a block diagram of the GPIB-COM, followed by a description of each of itsfunctional components. The GPIB-COM Interface The GPIB-COM is a completely transparent interface between GPIB d...
Page 22 - GPIB
Function Description Section Three GPIB-COM User Manual 3-2 © National Instruments Corporation Figure 3-1 shows a block diagram of the GPIB-COM. Address Bus Interrupt Control Address Decoding INS8250A Compatible Registers IRQ3 IRQ4 AEN IOW* IOR* Data Bus GPIB Config. Jumpers Config. Jumpers PC I/O C...
Page 24 - Direction Buffers
Function Description Section Three GPIB-COM User Manual 3-4 © National Instruments Corporation Direction Buffers These buffers control the direction in which data information travels. GPIB Transceivers The GPIB-COM is interfaced to the IEEE-488 bus by National Semiconductor 75160A and75162A transcei...
Page 25 - The GPIB-COM Test Commands
© National Instruments Corporation 4-1 GPIB-COM User Manual Section FourRunning Diagnostic Tests The GPIB-COM Test Commands The GPIB-COM Diagnostic Tests can be used to verify the configuration of the GPIB-COM andits connection to a GPIB printer or plotter. To run a GPIB-COM diagnostic test, connect...
Page 27 - -c change COM configuration
Section Four Running Diagnostic Tests © National Instruments Corporation 4-3 GPIB-COM User Manual When it is finished, the following message appears on the screen: Plotter test finished. Please check output to plotter with user manual instructions. If the plotter does not respond or the output on th...
Page 28 - The GPIB-COM Registers; Offset from
© National Instruments Corporation 5-1 GPIB-COM User Manual Section FiveProgramming the GPIB-COM This section presents a description of the GPIB-COM Serial Port Emulator registers andinformation on programming the GPIB-COM. You need to use this section only if you arewriting your own serial port dev...
Page 29 - Transmitter Holding Register; Bit
Programming the GPIB-COM Section Five GPIB-COM User Manual 5-2 © National Instruments Corporation Transmitter Holding Register Offset from Base I/O Address = 0 Register Address = XF8 DLAB bit in Line Control Register = 0 7 6 5 4 3 2 1 0 D6 D5 D7 D4 D3 D2 D1 D0 W The Transmitter Holding Register cont...
Page 30 - Receive Buffer Register
Section Five Programming the GPIB-COM © National Instruments Corporation 5-3 GPIB-COM User Manual Receive Buffer Register Offset from Base I/O Address = 0 Register Address = XF8 DLAB bit in Line Control Register = 0 7 6 5 4 3 2 1 0 D6 D5 D7 D4 D3 D2 D1 D0 R The Receive Buffer Register contains the c...
Page 31 - Divisor Latch Least Significant Byte (LSB) Register
Programming the GPIB-COM Section Five GPIB-COM User Manual 5-4 © National Instruments Corporation Divisor Latch Least Significant Byte (LSB) Register Offset from Base I/O Address = 0 Register Address = XF8 DLAB bit in Line Control Register = 1 7 6 5 4 3 2 1 0 DL6 DL5 DL7 DL4 DL3 DL2 DL1 DL0 R / W Bi...
Page 32 - Interrupt Enable Register
Section Five Programming the GPIB-COM © National Instruments Corporation 5-5 GPIB-COM User Manual Interrupt Enable Register Offset from Base I/O Address = 1 Register Address = XF9 DLAB bit in Line Control Register = 0 7 6 5 4 3 2 1 0 0 0 0 0 M S RLS THR RDA R / W The Interrupt Enable Register is a r...
Page 34 - Interrupt Identification Register
Section Five Programming the GPIB-COM © National Instruments Corporation 5-7 GPIB-COM User Manual Interrupt Identification Register Offset from Base I/O Address = 2 Register Address = XFA 7 6 5 4 3 2 1 0 0 0 0 0 0 ID1 ID0 INT R The Interrupt Identification Register is a read-only register which tell...
Page 35 - Line Control Register
Programming the GPIB-COM Section Five GPIB-COM User Manual 5-8 © National Instruments Corporation Line Control Register Offset from Base I/O Address = 3 Register Address = XFB 7 6 5 4 3 2 1 0 SBRK STP DLAB EVEN PEN STB WL1 WL0 R / W The Line Control Register is a read/write register that allows the ...
Page 36 - Word Length
Section Five Programming the GPIB-COM © National Instruments Corporation 5-9 GPIB-COM User Manual Bit Mnemonic Description 3r/w P E N Parity Enable Bit If this bit is set, the INS8250 will generate and check parityaccording to the values of the STP and EVEN bits (bits 4 and5). If this bit is clear, ...
Page 37 - Modem Control Register
Programming the GPIB-COM Section Five GPIB-COM User Manual 5-10 © National Instruments Corporation Modem Control Register Offset from Base I/O Address = 4 Register Address = XFC 7 6 5 4 3 2 1 0 0 0 0 LOOP OUT2 OUT1 RTS DTR R / W The Modem Control Register is a read/write register that controls RS-23...
Page 39 - Line Status Register
Programming the GPIB-COM Section Five GPIB-COM User Manual 5-12 © National Instruments Corporation Line Status Register Offset from Base I/O Address = 5 Register Address = XFD 7 6 5 4 3 2 1 0 TEMT THRE 0 BI FE PE OE DR R The Line Status Register provides information about the status of the data tran...
Page 41 - Modem Status Register
Programming the GPIB-COM Section Five GPIB-COM User Manual 5-14 © National Instruments Corporation Modem Status Register Offset from Base I/O Address = 6 Register Address = XFE 7 6 5 4 3 2 1 0 RI DSR DCD CTS DDCD TERI DDSR DCTS R The Modem Status Register gives the state of the modem control lines a...
Page 43 - Programming the Serial Adapter; Polling Method
Programming the GPIB-COM Section Five GPIB-COM User Manual 5-16 © National Instruments Corporation Programming the Serial Adapter The operation of the serial adapter is controlled by software, either IBM BIOS or an application.To transfer data to and from the serial port, the communications paramete...
Page 44 - The GPIB-COM Controller Function
Section Five Programming the GPIB-COM © National Instruments Corporation 5-17 GPIB-COM User Manual The GPIB-COM Controller Function Because most serial port applications involve communication with only one serial line, the GPIB-COM imposes some restrictions on the GPIB in order to be compatible with...
Page 45 - Power Requirement
© National Instruments Corporation A-1 GPIB-COM User Manual Appendix ASpecifications This appendix lists the specifications of the GPIB-COM board. Power Requirement +5 VDC ( ± 5%) 0.75 A typical Physical Dimensions 4.2 in. by 8.75 in. I/O Connector IEEE-488 Standard 24-pin Operating Environment Comp...
Page 49 - History of the GPIB
© National Instruments Corporation C-1 GPIB-COM User Manual Appendix COperation of the GPIB History of the GPIB The GPIB is a link, bus, or interface system through which interconnected electronic devicescommunicate. Hewlett-Packard invented the GPIB, which they call the HP-IB, to connect andcontrol...
Page 50 - System Controller and Active Controller
Operation of the GPIB Appendix C GPIB-COM User Manual C-2 © National Instruments Corporation The Controller usually addresses a Talker and a Listener before the Talker can send its message tothe Listener. After the message is transmitted, the Controller usually unaddresses both devices. Some bus con...
Page 51 - Data Lines
Appendix C Operation of the GPIB © National Instruments Corporation C-3 GPIB-COM User Manual Figure C-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*R E N *GND (TW PAIR W/DAV*)GND (TW PAIR W/NR...
Page 52 - Interface Management Lines
Operation of the GPIB Appendix C GPIB-COM User Manual C-4 © National Instruments Corporation DAV (data valid) DAV tells when the signals on the data lines are stable (valid) and can be accepted safely bydevices. The Controller drives DAV when sending commands, and the Talker drives it whensending da...
Page 53 - Physical and Electrical Characteristics
Appendix C Operation of the GPIB © National Instruments Corporation C-5 GPIB-COM User Manual Physical and Electrical Characteristics Devices are usually connected with a cable assembly consisting of a shielded 24-conductor cablewith both a plug and receptacle at each end. This design enables devices...
Page 55 - Configuration Restrictions
Appendix C Operation of the GPIB © National Instruments Corporation C-7 GPIB-COM User Manual Configuration Restrictions To achieve the high data transfer rate that the GPIB is designed for, the physical distance betweendevices and the number of devices on the bus is limited. The following restrictio...
Page 56 - User Comment Form
User Comment Form National Instruments encourages you to comment on the documentation supplied with ourproducts. This information helps us provide quality products to meet your needs. Title: GPIB-COM User Manual Edition Date June 1990 Part Number: 320197-01 Please comment on the completeness, clarit...
