Agilent Technologies ESG Spezifikationen Seite 7

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Programming Guide 1-3
ESG Family Signal Generators Preparing for Use
Setting up the Equipment for Remote Operation
I/O Libraries for GPIB
SCPI (standard commands for programmable instruments) is a popular language used to
communicate with the signal generator. Do not confuse SCPI with SICL and VISA, which
are I/O libraries of functions used by programs that communicate through GPIB. SCPI is
the actual language used to communicate with the signal generator itself.
Agilent Technologies Standard Instrument Control Library (SICL) and Virtual Instrument
Software Architecture (VISA) are I/O libraries used to develop I/O applications for the
GPIB interface. These functions are used in C or BASIC programs to simplify
communication with the signal generator.
SICL is a modular instrument communications library that works with a variety of
computer architectures, I/O interfaces, and operating systems. Applications written in
C/C++ or Visual BASIC using this library can be ported at the source code level from one
system to another without, or with very few, changes.
VISA is an I/O library that can be used to develop I/O applications and instrument drivers
that comply with the VXI “plug & play” standards. Applications and instruments drivers
developed with VISA can execute on VXI “plug & play” system frameworks that have the
VISA I/O layer.
One or both of these libraries are included with the GPIB interface card. SICL/VISA for
Hewlett-Packard Series 700 Controllers (model E2091D) and SICL/VISA for personal
computers (model E2094E) may also be purchased. For additional information on SICL
and VISA, see the user’s guides included with the SICL/VISA software package.
Table 1-2 Required Equipment for HP Series 700 Workstations Running HP-UX
Interface
Card
Operating
System
I/O Library Languages Backplane Max I/O
(kB/sec)
Buffering
HP E2071C HP-UX SICL/VISA ANSI C,
HP VEE,
HP BASIC
EISA 750 Built-in
HP E2070C HP-UX SICL/VISA ANSI C,
HP VEE,
HP BASIC
EISA 230 None
Table 1-3 GPIB Cables
Model HP 10833A HP 10833B HP 10833C HP 10833D
Length 1 meter 2 meters 4 meters 5 meters
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