NI-VISA2.5 Linux 美国国家仪器虚拟仪器软件架构VISA2.5Linux版下载
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NI-VISA2.5 Linux 美国国家仪器虚拟仪器软件架构VISA2.5Linux版下载
NI-VISA为使用GPIB、串行、PXI和其他类型仪器的用户提供支持。
NI-VISA是一个NI仪器驱动程序，是虚拟仪器软件架构(VISA) I/O标准的具体实现。虚拟仪器软件架构(VISA)这一标准用于配置和编程基于GPIB、VXI、PXI、串口(RS232/485)、以太网/LXI和/或USB接口的仪器系统以及故障分析。NI-VISA包括实用程序、底层控制功能和范例，可帮助您快速创建应用程序。
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NI-VISA2.5
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NI官方下载地址（可能无效或无法下载完成）：
NI-VISA2.5
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Install
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NI-VISA(TM) Software for LINUX.Version 2.5.
Copyright (c) 1995-2000 National Instruments Corporation. All rights reserved.
CONTENTS OF THIS FILE
---------------------
Installation From the Internet
LabWindows(TM)/CVI Run-Time Engine
Support for VISA 2.5 Features
VISA Support for Multiple GPIB-VXI Controllers
Using viPeekXX/viPokeXX Macros
Improvements and Bug Fixes
INSTALLATION FROM THE INTERNET
------------------------------
You should be logged in as 'root' to perform this installation.
1) Download the installation script file "INSTALL" and the compressed tar
file "NICVISA_.TZ" from the ftp site into a temporary directory.
2) Type ./INSTALL to execute the install script, and follow the instructions
as prompted.
3) Add the following environment variables to your shell setup file as shown
in the following example for csh. The following commands assume that
you installed NI-VISA into /usr/local/vxipnp:
setenv VXIPNPPATH /usr/local/vxipnp
setenv LIBRARY_PATH/usr/local/vxipnp/linux/bin
Note:If your setup file already contains the LIBRARY_PATH environment
variable, you need to append /usr/local/vxipnp/linux/bin to the end of
the statement. The required commands may vary from those shown in the
previous section if you are not using csh.
LABWINDOWS/CVI RUN-TIME ENGINE
------------------------------
The Setup program now automatically installs the LabWindows/CVI Run-Time
Engine when necessary. The NI-VISA interactive utility, VISAIC, requires the
LabWindows/CVI Run-Time Engine 5.01 or later to be installed. When you
install this utility, Setup also installs the LabWindows/CVI Run-Time Engine
if it is not already present.
SUPPORT FOR VISA 2.5 FEATURES
-----------------------------
The Adobe Acrobat manuals describe the new features of NI-VISA 2.5, but they
are briefly listed here for your convenience.They are installed in
<VXIPNPPATH>/linux/NIvisa/Manuals.
The VXI and GPIB functionality in NI-VISA 2.5 has been greatly expanded.
There is a new VXI BACKPLANE resource for each VXI or GPIB-VXI chassis.
There is a new GPIB INTFC resource for each GPIB board; this provides
equivalent functionality to the NI-488 board-level functions. The online
help lists all operations, attributes, and events that each VISA resource
class supports.
The best way to explore the new features is to use the VISA Interactive Control
to open sessions to the new resource types and look at the available operations,
events, and attributes.
VISA SUPPORT FOR MULTIPLE GPIB-VXI CONTROLLERS
----------------------------------------------
NI-VISA supports multiple GPIB-VXI controllers in a single system. Because the
National Instruments GPIB-VXI controller ships with a primary address of 1,
NI-VISA automatically searches for any GPIB-VXI controllers at that address.
If you have changed the primary address (for example, if you added a
second GPIB-VXI controller to your system, and set the address of the
second controller to 9), or if you have a GPIB-VXI controller from another
vendor, then you need to use the VISA configuration utility so NI-VISA
can find it.This application is located at <VXIPNPPATH>/linux/NIvisa/visaconf.
While in the Resource Editor, click the 'Add' button to add a new resource.
Specify a valid resource name for the new controller, such as
GPIB-VXI2::0::INSTR.You will then be prompted for the GPIB board number and
the GPIB-VXI's primary and secondary addresses.For most users, the only
number that will change (from the default selections) is the primary address
(for the above example, you would change it to 9).Click 'OK' to add this
new resource, and then select the File|Save menu option to save this
information to the NI-VISA database.
If you are using a GPIB-VXI command module from another vendor, you also need
to obtain and install that vendor's VISA GPIB-VXI component.
USING viPeekXX/viPokeXX MACROS
------------------------------
Users who want to use the viPeekXX/viPokeXX macros for platforms on which the
macros are available must define a macro called NIVISA_PEEKPOKE before including
"visa.h".Please note that the macros are currently available only on the
following platforms:
- Win32 (All C compilers)
- Solaris (LabWindows/CVI only)
If you have used these macros with a version of NI-VISA prior to 2.0, your
application will continue to run, but the peek/poke performance will decrease.
You should relink with the libraries supplied with this installation to regain
the prior peek/poke performance.
IMPROVEMENTS AND BUG FIXES
--------------------------
GPIB and Serial performance have been improved over Version 2.01.
If you are using the GPIB-ENET controller, the previous version of NI-VISA
would take a minute or more to time out if a GPIB-ENET controller were not
connected or powered on. The timeout is now much shorter.
This version of NI-VISA incorporates general bug fixes and improvements for
GPIB-VXI. The NI-VISA code instrument will now load properly in configurations
where it previously failed.
If a GPIB-VXI chassis is reset while an application has VISA loaded, the
GPIB-VXI would previously become accessible only as GPIB but not GPIB-VXI.
This release of NI-VISA will now properly re-detect the GPIB-VXI.
Fixed bug with the GPIB-VXI and hardware triggers.
This version of NI-VISA incorporates general bug fixes and improvements for
formatted I/O, especially with very large buffers and with the following
modifiers: "%b", ",", "#", "!ob", "!ol", and "%[".
The documentation for viPrintf and viFlush better describes when formatted
I/O buffers are sent. The documentation for viScanf better describes the ","
and "#" modifiers.
Fixed bug with the Serial End Last Bit mode for reads and writes.
IMPORTANT NOTES
---------------
If your application crashes or terminates abnormally, NI-VISA cannot always
clean up properly.In order to run another VISA application, you should
first run the application <VXIPNPPATH>/linux/NIvisa/viclean.This deletes
any remaining shared memory segments and system semaphores.
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