NI-VISA3.2Linux 美国国家仪器虚拟仪器软件架构VISA3.2 Linux版下载

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NI-VISA3.2Linux 美国国家仪器虚拟仪器软件架构VISA3.2 Linux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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VISA3.2L.txt (613 Bytes, 下载次数: 0, 售价: 10 元)

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VISA320L

National Instruments NI-VISA(TM) Software for Linux x86. Version 3.2.
Copyright(c) 1995, 2004 National Instruments Corporation. All rights reserved.

NATIONAL INSTRUMENTS HOLDS MULTIPLE COPYRIGHTS, TRADEMARKS, AND PATENTS
FOR THIS PRODUCT.  BY DOWNLOADING AND/OR INSTALLING THIS PRODUCT, YOU AGREE
TO THE TERMS OF THE license.txt FILE THAT RESIDES IN THE SAME DIRECTORY AS
THIS readme.txt FILE ON THE CD AND/OR WEB SITE.  FOR PATENTS COVERING
NATIONAL INSTRUMENTS PRODUCTS, REFER TO THE patents.txt FILE ON THE ROOT
DIRECTORY OF YOUR CD (IF APPLICABLE) AND/OR www.ni.com/patents.


CONTENTS OF THIS FILE
---------------------
Installation From the Internet
LabWindows(TM)/CVI Run-Time Engine
VISA Support for Multiple GPIB-VXI Controllers
VISA Probes for LabVIEW 7.x
USB Issues on Linux
NI-VISA 2.5 Improvements and Bug Fixes
NI-VISA 2.6 Improvements and Bug Fixes
NI-VISA 3.0 Improvements and Bug Fixes
NI-VISA 3.1 Improvements and Bug Fixes
NI-VISA 3.2 Improvements and Bug Fixes
Credits
Known Issues


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 LD_LIBRARY_PATH  /usr/local/vxipnp/linux/bin

Note:  If your setup file already contains the LD_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 INSTALL script now automatically installs the LabWindows/CVI Run-Time
Engine when necessary. The NI-VISA interactive utility, VISAIC, requires the
LabWindows/CVI Run-Time Engine 5.0.1 or later to be installed. When you
install this utility, the INSTALL script also installs the LabWindows/CVI
Run-Time Engine if it is not already present.


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 app's path is /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 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.

If you have a GPIB device at primary address 1 and that device does not
recognize "*IDN?", you should disable the GPIB-VXI auto-detect feature in
visaconf on the Settings tab.


VISA PROBES FOR LABVIEW 7.x
---------------------------
The VISA probes for LabVIEW 7.x greatly extend the amount of relevant
information displayed when using LabVIEW probes on VISA refnums. They are used
automatically by LabVIEW in place of the generic probe when they are
installed.

To install them, download them from "ftp.ni.com/support/visa/labview/probes/"
and copy them into "/vi.lib/_probes/default/VISA/" where
is the installation directory of LabVIEW.


USB ISSUES ON LINUX
-------------------
NI-VISA relies on a Linux kernel feature for its USB support. This feature
is called "usbfs", and on older Linux kernels was referred to as "usbdevfs".
For NI-VISA to support USB devices, this feature must be present and
mounted (like a virtual filesystem). This is supported in most major Linux
distributions such as Red Hat, SuSE, and Mandrake. You may use the "mount"
command to display what filesystems are currently mounted to see if your
system currently supports this feature.

Also, the VISA user must have write accress to the file that represents
the USB device, which is typically somewhere in a subdirectory within
"/proc/bus/usb". If this is not the case, the USB device is not
accessible by VISA (it will not be found using viFindRsrc and viOpen will
fail). The default configuration on most systems is that the 'root' user
has write access; however, no other user has this access.

There are a number of options that you can take to provide a non-root
user access to a USB device.

1) Use the hotplug package. This package is installed by default on most
distributions including Red Hat, SuSE, and Mandrake. The hotplug package
allows the user to run scripts for a specific USB device based on
characteristics such as Vendor ID (VID) and Product ID (PID). If the
hotplug package exists, the NI-VISA Installer by default will install
scripts to give all users write access to all USB TMC devices and a
framework for USB RAW devices. To add write permissions for a specific
USB RAW device, simply run the included script:
"/linux/NIvisa/USB/AddUsbRawPermissions.sh".
For more information on the hotplug package, please visit:
http://linux-hotplug.sourceforge.net

2) "usbfs" (formerly known as "usbdevfs") may be mounted with the option
"devmode=0666". This gives all users read and write access to all USB
devices.

3) The 'root' user may add write permissions to the file that represents
the USB device which is typically somehere in a subdirectory within
"/proc/bus/usb". Unfortunately, these permissions will be lost if the
device is unplugged and then plugged back in. Because of this, this
approach is not recommended.


NI-VISA 2.5 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.


NI-VISA 2.6 IMPROVEMENTS AND BUG FIXES
--------------------------------------
Fixed bug with enabling the exception event on GPIB-VXI.

viScanf %f modifier will now properly scan numbers bigger than 2^31-1.

viGpibPassControl now returns an error if the primary and/or secondary address
is invalid.

In VXI, mapping a trigger line already mapped produced VI_ERROR_LINE_IN_USE
(0xBFFF0042), instead of VI_SUCCESS_TRIG_MAPPED (0x3FFF007E).  This now
returns the expected status code.

In VXI and GPIB-VXI, using viMoveInXX and viMoveOutXX with a negative
value for the length parameter would occasionally cause the system to reboot.
This now returns the error code VI_ERROR_INV_LENGTH (0xBFFF0083) instead.

viReadToFile now writes the correct data to the file.

For TCP/IP SOCKET and INSTR resources, the openTimeout specified in viOpen
is now used as the network timeout during the connection sequence.  The
default openTimeout, if not specified, is 2 seconds (2000 milliseconds).

For TCP/IP INSTR resources, trying to do a viRead or viReadAsync on a buffer
with a size larger than a few kilobytes, would either return an error or
occasionally crash.  This has been fixed.

viFindRsrc would previously reject certain valid expressions and accept
certain invalid expressions, usually involving spaces.  This has been fixed.

The NI-VISA driver would not initialize properly on libc version 5.4.44.
This has been fixed.

If an application called fork, the NI-VISA driver didn't initialize
properly in the child process.  Exiting either the child or parent process
caused the other's VISA calls to stop working.

In Serial, we now support baud rates higher than 38400.  Specifically,
the values 57600, 115200, 230400, and 460800 are now valid as long as the
system driver allows them.

In Serial, if data arrives at the same time as viTerminate is called or a
timeout occurs, the data now gets read.  If this satisfies the read request,
then the read operation returns a successful status.

Enabling VI_EVENT_SERVICE_REQ for VI_HNDLR with a GPIB-ENET controller
would cause an application to hang if an SRQ event arrived while I/O was
in progress.  This has been fixed.

Multiple VISA processes using GPIB could not perform I/O simultaneously
even if the I/O was to different controller cards.  This has been fixed.
Multiple I/O requests to the same GPIB controller will still be handled
sequentially due to the nature of GPIB.

Calling viOpen with access mode 1 (exclusive lock) did not work as expected
on GPIB interface sessions.  This has been fixed.


NI-VISA 3.0 IMPROVEMENTS AND BUG FIXES
--------------------------------------
When you open a VISA session to GPIB0::INTFC and immediately query the
attribute VI_ATTR_GPIB_SRQ_STATE, it previously returned the value
VI_STATE_UNASSERTED.  It now returns VI_STATE_UNKNOWN because the SRQ line
cannot be monitored if the interface is not yet CIC.  The correct state is
returned after calling viGpibSendIFC.

For a TCPIP INSTR resource, calling viTerminate did not work correctly.

For a TCPIP INSTR resource, calling viRead or viWrite with a large buffer
occasionally would return an error without transmitting the entire buffer.

For a TCPIP INSTR resource, opening and closing sessions to multiple host
addresses would cause NI-VISA to crash.

For a TCPIP INSTR resource, calling viLock with a timeout longer than the
I/O timeout for that session could cause NI-VISA to return VI_ERROR_TMO.

For a TCPIP SOCKET resource, viReadAsync was not implemented.  Now it is.

For a Serial INSTR resource, viOpen will now open a port if the process
that had been using that port exited ungracefully (such as with Ctrl-C).
The previous behavior had been that viOpen would return VI_ERROR_RSRC_BUSY.

For a Serial INSTR resource, if you enabled RTS/CTS flow control and then
manually tried to set the state of the RTS line, some operating systems
would generate VI_ERROR_NSUP_ATTR while others would return VI_SUCCESS but
not actually modify the state of the line.  Neither of these behaviours was
correct.  Now NI-VISA will return VI_ERROR_INV_SETUP in this case on all
operating systems.

For a Serial INSTR resource, NI-VISA now supports the baud rates 50, 75,
134, 200, 1800, and 576000.  This list is now identical to the OS list.

For a Serial INSTR resource, if a binding existed to a valid file/device
but that file/device was not really a serial port, then NI-VISA would
not close the handle.  Repeated calls to viFindRsrc or viOpen would cause
the process to eventually run out of file handles.  This has been fixed.

If you had a GPIB device at primary address 1 that generated a response to
*IDN? that was longer than 100 characters, viFindRsrc would occasionally
crash.  This has been fixed.

viFindRsrc would crash on a complex expression with multiple "|" symbols.
This has been fixed.

viScanf %# modifier will now output the number of characters put into the
buffer excluding the terminating null character.  This applies to the %#s,
%#t, %#T, and %#[] modifiers. NI-VISA treats the maximum array size
(specified on input) as the total buffer size including the terminating null
character.

Once viScanf returned VI_ERROR_TMO, it would no longer work properly on
that session.

Calling viFindRsrc repeatedly when logged in as root would eventually run
out of file descriptors.  This has been fixed.

The attributes VI_ATTR_MANF_NAME and VI_ATTR_MODEL_NAME are now correctly
implemented for GPIB-VXI regardless of whether NI-VXI is installed.

The maximum simultaneous number of GPIB-VXI controllers supported by
NI-VISA has changed from 10 to 32.

When calling viWaitOnEvent repeatedly with a timeout of 0 (immediate), some
interfaces and event types would still consume excessive CPU time.  Now doing
this will yield the CPU regardless of the interface or event type.

viFindRsrc would return VI_ERROR_INV_EXPR if the expression exceeded 255
characters.  Now it will accept resource expressions of any length.

Calling viFindRsrc would always assert REN on each GPIB board after finding
devices.  Now viFindRsrc will re-assert REN on each board only if there is
at least 1 open VISA INSTR session on that board.

For a TCPIP SOCKET resource, using viRead with termchar enabled was much
slower than reading the exact number of bytes.  The performance of using
termchar with viRead is now much better than it was.


NI-VISA 3.1 IMPROVEMENTS AND BUG FIXES
--------------------------------------
Reading data from a Serial port was slow.  The performance has improved.

Using the Serial Break VI from LabVIEW did not work with remote NI-VISA.
This has been fixed.

For a Serial INSTR resource, if a parity or framing error occurred, NI-VISA
would not return the correct error condition.  This has been fixed.

The hostname "localhost" or the IP address "127.0.0.1" did not work properly
with remote NI-VISA.  Only the DHCP name or network IP address would work.
This has been fixed.

Calling viEnableEvent on a remote VISA session would leak memory in the
server.  This has been fixed.

The remote NI-VISA server did not properly validate a hostname with an
underscore.  This has been fixed.

Calling viOpen on a remote NI-VISA resource did not honor the openTimeout
parameter.  This has been fixed.

Calling viClose on an ethernet resource would leak a socket handle.  This
has been fixed.

The global attributes on a GPIB INTFC resource were not properly shared
across sessions.  This has been fixed.

Using the system call "fork" on a process with VISA loaded would sometimes
cause the forked process to hang.  This has been fixed.


NI-VISA 3.2 IMPROVEMENTS AND BUG FIXES
--------------------------------------
Added complete support for USB (both RAW and INSTR).

Added a new UNINSTALL script for Linux.  This UNINSTALL script is installed
in the /usr/local/vxipnp/linux/NIvisa directory.

Calling viPrintf on a remote VISA session would return VI_ERROR_IO instead
of VI_ERROR_RSRC_LOCKED when the remote resource was locked.  This is fixed.

The VISA Interactive Control utility (NIvisaic) now displays an error message
box when viFindRsrc returns an error.


CREDITS
-------
This product includes components that use the socket++ library.  The library
is Copyright(C) 1992-1995 Greg Lavender (University of Texas) and
Gnanasekaran Swaminathan (University of Virginia).  All rights reserved.


KNOWN ISSUES
------------
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 /linux/NIvisa/viclean.  This deletes
any remaining shared memory segments and system semaphores.

If you upgrade from NI-VISA 2.5 using the Red Hat Package Manager directly,
the uninstall script for the old NI-VISA will remove the symbolic links for
libvisa.so, libcvi.so, NIvisaic, and visaconf from /usr/lib and /usr/bin.
To get around this problem, either use the new INSTALL script or uninstall
the previous 'nivisa' and 'nicvirte' packages before installing those
included in this distribution.

If you are experiencing problems using the TCPIP SOCKET, TCPIP INSTR, remote
NI-VISA server, or client in Red Hat Linux version 7.3, you might have
encountered known issues with TCPIP in kernel version 2.4.18-3.  Please
upgrade to kernel version 2.4.18-5 or later.  The .rpm file for this update
may be found at:
ftp://speakeasy.rpmfind.net/linux/redhat/updates/7.3/en/os

The GPIB INSTR and GPIB INTFC resources depend on the presence of an NI-488
driver installed on the system.  For PCI-GPIB and AT-GPIB/TNT products on
Linux, currently only a Beta version of NI-488 is available.  For GPIB
ethernet products on Linux, NI-VISA requires NI-488.2 for Linux version 2.2
or higher.

For USB resources, there are issues using interrupt-in endpoints. These
issues vary depending on the version of the Linux kernel and the USB
controller hardware that is on the system. On 2.4.x kernels, only one
packet may be requested at a time. Hence, if the value for the attribute
VI_ATTR_USB_MAX_INTR_SIZE exceeds the maximum packet size of the current
interrupt-in endpoint, interrupts will not be received. Also, depending
on the chipset of the USB controller hardware, it is possible for a
kernel panic (system crash) to occur while attempting an interrupt-in
transfer. These issues have been fixed in 2.6.x kernels. However, in some
2.6.x kernels, interrupt-in transfers will not work on EHCI (USB 2.0)
controllers with USB 2.0 devices.