National Instruments GPIB-120A 用户手册

Contents

GPIB-120A User Manual

viii

© National Instruments Corporation

NDAC (Not Data Accepted) ........................................................A-3
DAV (Data Valid)........................................................................A-3

Interface Management Lines....................................................................A-4

ATN (Attention)...........................................................................A-4
IFC (Interface Clear)....................................................................A-4
REN (Remote Enable) .................................................................A-4
SRQ (Service Request) ................................................................A-4
EOI (End Or Identify) ..................................................................A-4

Physical and Electrical Characteristics ................................................................A-5
Configuration Restrictions: The Role of Expanders and Extenders ...................A-8

Related Document............................................................................................................A-8

Appendix B
Specifications

..........................................................................................................................B-1

Appendix C
Multiline Interface Messages

............................................................................................C-1

Appendix D
Customer Communication

.................................................................................................D-1

Figures

Typical GPIB-120A Extension System (Physical Configuration) .....................1-1

Typical GPIB-120A Extension System (Logical Configuration).......................1-2

GPIB-120A Block Diagram ...............................................................................3-1

GPIB Connector and the Signal Assignment......................................................A-5

Linear Configuration of the GPIB Devices ........................................................A-6

Star Configuration of the GPIB Devices ............................................................A-7

Tables

IEEE 488 Capability Identification Codes .........................................................3-4

System Configuration .........................................................................................B-1

Performance Characteristics ...............................................................................B-1

Electrical Characteristics ....................................................................................B-2

Environmental Characteristics............................................................................B-2

Physical Characteristics ......................................................................................B-2