GPIB IEEE materiel années 80

Bonjour,
Y a t il des problème connus de compatibilité entre les vieux matèriels ( années 80)
et les nouvelles interfaces IEEE ( USB-HS)
Actuellement cela tourne sur un vieux PC en emulation DOS
Merci
Solved!
Go to Solution.

Hello, could you posted on English on this forum’s part.
Could you give more details on your issue?
Regards
Samuel G. | Application Engineer Team Leader
Certified LabVIEW Developer
National Instruments France
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Été de LabVIEW 2014
12 présentations en ligne, du 30 juin au 18 juillet

Similar Messages

Communicating between GPIB IEEE 488-1978 Instrument and LabView

Hi,
I'm currently trying to convert some old BBC BASIC Code into Labview 6.1.
The BBC Computer has a GPIB Comms Unit attached to it to communicate with an old Marconi Instruments Microwave Counter 2440 using GPIB IEEE 488-1978.
I am currently trying to get Labview to communicate with the Counter using GPIB 488 vis and a NI GPIB 488.2 Card but I'm not able to get anything out of the Counter or get MAX to even acknowledge the equipment exists.
I was wondering if anyone out there knows if it is possible to communicate with a GPIB IEEE 488-1978 instrument in Labview 6.1 (or any other LV Versions) and if it is, does anyone have a driver for the instrument (Marconi Instruments Microwave Counter 2440 circa 19
84) or having any helpful tips on the protocol for talking to a IEEE 488-1978 instrument.(I have some previous experience using VISA.)
Many Thanks in Advance for your help.
Sammy Mason

I have done this with several instruments. It is best to get a hold of the manual for this instrument and see what commands it uses.
MAX will not find this using the *IDN? query. In MAX, open the "Communicate With Instrument" window and type "ID?" (without the quotes), and hit query. You should get some basic information back from your instrument.
I use GPIB Read and GPIB Write most often. Your instrument probably doesn't support much else. Maybe Clear and Poll.
Be careful if you are using a newer, faster computer. There are Knowledge Bases and Discussion Forum topics that discuss the problems that can arise. To prevent these problems, I created my own Read and Write VIs. They just have a few milliseconds delay before the read or writ
e takes place
Attachments:
GPIB_Read_with_Delay.vi ‏37 KB
GPIB_Write_with_Delay.vi ‏35 KB

S: cheap LabView compatible GPIB-IEEE-488 Card

Hi Newsgroup,
i'm looking for a cheap GPIB-IEEE-488-Card (LabView compatible) to control a
climate-chamber with LabView 6.i. As the climate-chamber was build more than
ten years ago, i don't expect it's interface to be compatible to the
IEEE-488.2 standard.
Following information about the interface occur in the manual: IEC-bus, IEEE
488 plug connector
Is there a downward-compatibly form IEEE-488.2 to IEEE-488?
Does anybody know where i can buy such a card for few money?
I've found a Dealer in Germany (where i come from) with the following offer:
http://www.quancom.de/quancom/quancom01.nsf/home_prod_deu.htm?OpenFrameSet&F
rame=unten&Src=http://www.quancom.de/qprod01/deu/pb/gpib_1.htm
For me it seems to be quite inexpens
ive, but i have few experience within
this range. Therefore I would be glad, if you could help me. My boss would
not appreciate if spend a lot of money for a card, which does work together
with the climate-chamber.
Greetings
Florian

Les's answer about 488 is right on. 488.2 is just a superset of the original 488 - nothing about the electrical interface has changed. You question about low cost cards has a different problem however. The GPIB functions in LabVIEW will only work with an NI card. If a vendor offers a VISA driver for their card, then the LabVIEW VISA functions will work but I have had some problems with very old instruments and VISA. If the vendor offers GPIB drivers for LabVIEW, then use those. If all they have is a DLL that you need to call, then you've got a lot of software development ahead of you. All of this means is that the cost of the hardware is just a part of the overall cost of a project. If you manage to save $100 on the board and then have spend a week or two o
n the basic GPIB software, you really haven't saved anything.

I need help regarding GPIB(IEEE 488)

Is there any code you can give or advice regarding manipulation of GPIB card... I need to create a java program which controls an external hardware thru GPIB card...(only GPIB slot is available).... Any help is deeply appreciated... Thank you...

What kind of accounts do you need to reset? IMAP or POP accounts using one of the many web-based messaging systems? An Exchange server account? Were they working and now just not working any longer?
You're going to have to be a little more specific in what you need...
Clinton

Hameg power supply HM7044 ieee 488 (GPIB) device control

Dear All,
I have a power supply (Hameg HM7044) with a GPIB interface.It seems that there is no VI to control it in the HAMEG or the ni websites.
Since i am new to this kind of interface i have two questions.
-if i connect the device how do i know the address it is in.
-is there a general VI to interact with GPIB -ieee 488 devices?
thank you in advance,
thodoros

Well, there is a driver here but it is for RS-232 and for some stupid reason, they have password protected the VI. That should deserve a nasty message to them.
First, if you use an NI GPIB controller, you will get a program called Measurement & Automation Explorer (MAX). As part of the installation instructions, you will do a 'Scan For Instruments'. This will return a list of GPIB addresses for all of the connected instruments. Second, the information for setting the GPIB address is going to be in the instrument manual. If you don't have a manual, get one because you can't do a thing without one.
To communicating to GPIB instruments, the recomended API is VISA. The majority of the time, all that you will need is a VISA Write and a VISA Read.
You can learn some of the basics at the Instrument Control Fundamentals page.

IEEE USB not working

I using LV9.0 and was using and ICS USB_IEEE converter. The ICS USB work of awhile then would lock up. So I thought I would switch to an NI USB-IEEE. I reintalled the newest NI 488 drivers then reboot. The NI-IEEE would work with Automation explore but it will not work using labiew or and LV .exe. I tried to remake a simple IEEE write -read VI and it still doesn't work. Error (0). I then unistalled ICS completely and installed the NI-488 drivers again and still does't work.Any ideas?
Solved!
Go to Solution.

Hi Andy,
How extensively did you test the functionality in Measurement and Automation Explorer? Are you able to send/receive signals or collect data from your device by implementing tasks in MAX? If it works in Measurement and Automation Explorer, then it is likely that the GPIB IEEE is functional in connecting your device to the software. How are you calling to this device in LabVIEW? Receiving no functionality in LabVIEW but fine functionality in MAX does not indicate a problem with the cable. Please post more information regarding your set-up, what device you are connecting to as well as your LabVIEW program.
Regards,
Jackie
DAQ Product Marketing Engineer
National Instruments

How can I monitor Status word From the other side of the GPIB bus

I develop Thermal system control that should be operate thru the GPIB IEE 488.2 bus , my instrument application already written in Visual Basic ,The system knowes to do basic operation such as SETPOINT ,AIRDUT , BEGIN , STOP and more but I have do a problem , any time that I capture command from the controller the status word stuck at listener mode and I can not send another command again because my loop is waiting for the other side (the controller ) to tallk by monitor the IBSTA word .
There is anyway to reset ,clear ,initialize STATUS word again to his default value ?
Note : I am using VB 6 , the Samples that you have here for Non-controller is good so far if I want to send and recive data manualy (c
omputer to computer)
What if I have A system that work and always waiting for capture command and do somthing ?
I will be very greatful if anyone can help me , send me sample code for Status checking loop.
MIKI-AVI

Hello Miki-Avi,
I'm having a little bit of trouble understanding what you're trying to do. It seems that you have an instrument application that you have written and works in some instances but gets into an infinite loop in other cases. I think that your loop is waiting for something in the Status byte to change, and you're wondering how you can get it to change.
I'm not sure what bit you're waiting for, but I would assume that it is the LACS bit 2. You do not want to simply reset the IBSTA byte because this byte tells you what is happening on the GPIB interface. So, if you're waiting for the LACS bit to change, then you are waiting for the board to be addressed as a listener. Your controller would address the non-controller as a listener once you sent it da
ta with an IBDEV and an IBWRT call.
If you are looking for code for a status checking loop, check the following resources. Remember that you must call ibwait 0 to update your IBSTA byte. The 488.2 Function Reference is very useful in figuring out what you need to do.
http://venus.ni.com/stage/we/niepd_web_display.DISPLAY_EPD4?p_guid=B45EACE3EF8D56A4E034080020E74861&p_node=DZ52353&p_submitted=N&p_rank=&p_answer=&p_source=Internal
http://ae.natinst.com/operations/ae/public.nsf/fca7838c4500dc10862567a100753500/9cc0939663f1c5de862565d70082e89e?OpenDocument
Please let me know if you need more assistance.
Scott B.
National Instruments
Applications Engineer

GPIB-USB-A-- NI488.2 2.0

Installing a GPIB-USB-A, installs okay and the NI 488.2 2.0 software
installs
okay. The NI488.2
"Add GPIB Hardware" and
"Getting Started Wizard" both find and detect the GPIB-USB-A hardware and
it
passes the tests.
But MAX does not find it or recognize it in the "Devices and Interfaces:
Section of MAX.
Refresh does not find it either.
OS: Windows XP Professinal
This is on a new DELL 8250 computer with 2 USB ports on back and two on
front.
I have it plugged into one of the front USB ports. Could that be a problem?
NI Software : LabVIEW version 6.1
NI Hardware : GPIB/IEEE 488 device GPIB-USB-A
Driver Version : NI 488.2 2.0
OS :Windows XP
CPU :2.4 GHz
RAM :512 MB
Vendor : DELL

Hi,
Try this: go to Tools >> Install Legacy Driver Support. This seems strange but it should update the installed drivers. If this fails, there are some good suggestins at this thread:
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RNAME=ViewQuestion&HOID=506500000008000000D8520000&ECategory=LabVIEW.LabVIEW+General
Hope this helps out! Let me know if this works for you.
Best Regards,
Aaron K.
Application Engineer
National Instruments

Looking for a Labview job. Any offers or suggestions?

Hi, everybody!
I wish we had labview.jobs or something. Since we have not yet,
I would appreciate any hints regarding looking for a Labview job,
especially for people with just 1 year of experience,
beside emailing everybody on the NI Alliance list and searching
general purpose job sites.
In case prospective employers read this, my cover letter and resume follow:
Dear Manager:
Thank you for taking time out of your busy schedule.
You will find that my resume which is attached,
outlines why I am an excellent fit for a
position with your company. In addition to my broad
educational background including two Masters degrees
in Electrical Engineering and Physics, numerous
Computer Science courses taken, and ten years of
diverse experience in programming and system
administration and support, I have just finished a
successful control and data acquisition project in
Labview which is also described in my resume.
My experience and background enable me
to master any software development tool and/or
environment very quickly, which makes me a perfect
candidate who can always keep up with the
ever-changing world of computer technologies.
I am looking forward to discussing this opportunity
with you.
Sincerely,
Stanislav Rumega
2000 Goldsworth Valley, Apt. #X-5
Kalamazoo, MI 49008
Telephone: (616) 387-5967
[email protected]
http://free.prohosting.com/~styrum/webresume.shtml
OBJECTIVE:
To obtain a full-time Software Engineer, Developer,
Programmer, or Analyst position after graduation from
Western Michigan University in April 2000. Willing to
consider positions that are usually offered to
candidates with BS degrees too.
SUMMARY:
- Languages: G (LabVIEW), Java, C, C++, SQL, PL/SQL,
HTML, SPARC Assembler;
- Systems: MS-DOS, WINDOWS NT/98/95/3.11, SunOs UNIX;
- Software: LabVIEW, Maple V, FoxPro, MS Word,
MS Excel, CorelDraw , Internet Explorer, Netscape
Navigator, various utilities and other packages;
- Fluent in English and Russian.
EXPERIENCE:
Teaching/Research Assistant, 1997 - Present
Department of Physics, Western Michigan University,
Kalamazoo, MI
- Taught undergraduate physics labs;
- Graded student papers;
Project:
Developed a control and data acquisition program for
an electron spectrometer system in the WMU accelerator
laboratory. The program was written in LABVIEW.
The project involved controlling and retrieving
data from devices on a CAMAC crate as well as
GPIB (IEEE-488) instruments connected to the system
via a GPIB to CAMAC interface. A computer communicated
with the system via a serial (RS-232) port on the
crate controller.
Engineer/Programmer, 1993-1997
The Association FACTORIAL-SERVICE, Rostov-na-Donu,
Russia
- Supported all the available computer resources and
other equipment (a phone switching system, phones,
faxes, copiers, etc.);
- Selected, purchased, installed, configured all the
hardware and software used at the office;
- Installed and administered a LAN;
- Designed and coded applications;
- Fine-tuned complicated off-the-shelf Accounting and
Sales software which had their own built-in
languages and required programming;
- Trained users;
- Provided translations between English and Russian.
Engineer/Programmer, 1992-1993
Joint Stock Company TRANSINFORM, Moscow, Russia
- Provided some preparatory work and marketing for
the introduction of an X.25 packet-switched
computer network in Rostov-na-Donu, Russia.
Engineer/Programmer, 1991-1992
Soviet-British Joint Venture MARINE COMPUTER SYSTEMS,
Moscow, Russia
- Developed a FoxPro application to calculate traffic
accident rates depending on road conditions.
EDUCATION:
Candidate for Master of Arts in Physics,
1997 - Present Western Michigan University,
Kalamazoo, Michigan
Anticipated graduation date: 04/00.
Computer Science GPA: 3.8,
Overall GPA: 3.4 on a 4.0 scale.
Computer Science courses taken:
- Computer Science II (Object-Oriented C++
Programming);
- System Programming Concepts (UNIX, C);
- Computer Organization and Assembly Language
(SPARC);
- Principles of Database Management Systems (SQL,
PL/SQL);
- Data and File Structures (C++);
- Programming in Maple V;
- Programming Languages (Principles of Programming
Languages, Web Programming: HTML, Java).
Awards:
- Dean's List, 1998-1999;
- David Carley Memorial Award, 1998;
- Department Award for Graduate Student Teaching
Effectiveness,1999.
5-yr. Diploma in Radiophysics and Electronics,
an equivalent of an MS in Electrical Engineering,
1991 Rostov State University,
Rostov-na-Donu, Russia
Numerous courses in Mathematics, Physics, and Computer
Science taken.
GPA: 4.7 on a 5.0 scale.
Project: Developed a simulation of a conveyor
multiprocessor system. The program was written
in Pascal.
Awards:
- Received a higher stipend for high academic
achievements every semester, 1984-1987,
1989-1991.
ACTIVITIES:
- Graduate Student Advisory Committee, Member,
1999-2000;
- Association of Information Technology
Professionals, WMU Student Chapter, Member,
1999-2000.
- Volunteer Student Safety Patrol, 1989-1991.
WORK AUTHORIZATION:
Authorized to work in US for 12 months after
graduation, which can be extended for up to
6 years with employer's help through
petitioning for a working visa.
In Canada, an employment authorization (EA) must be
obtained before starting employment.
REFERENCES:
Available upon request.

Forgot to mention - go to any jobs web site and enter LabVIEW as a keyword - for
example, I went to http://www.monster.com/ and found 301 postings.
"John D. Seelbinder" wrote:
> Viewpoint Software Solutions is looking for a software engineer with LabView
> experience:
> http://www.viewpointusa.com/employment.html
>
> FWIW I do not work for, or have a financial interest in Viewpoint Software
> Solutions.
>
> Stanislav Rumega wrote:
>
> > Hi, everybody!
> >
> > I wish we had labview.jobs or something. Since we have not yet,
> > I would appreciate any hints regarding looking for a Labview job,
> > especially for people with just 1 year of experience,
> > beside emailing everybody on the NI Alliance list and searching
> > general purpose job sites.
> >
> > In case prospective employers read this, my cover letter and resume follow:
> >
> > Dear Manager:
> >
> > Thank you for taking time out of your busy schedule.
> > You will find that my resume which is attached,
> > outlines why I am an excellent fit for a
> > position with your company. In addition to my broad
> > educational background including two Masters degrees
> > in Electrical Engineering and Physics, numerous
> > Computer Science courses taken, and ten years of
> > diverse experience in programming and system
> > administration and support, I have just finished a
> > successful control and data acquisition project in
> > Labview which is also described in my resume.
> > My experience and background enable me
> > to master any software development tool and/or
> > environment very quickly, which makes me a perfect
> > candidate who can always keep up with the
> > ever-changing world of computer technologies.
> >
> > I am looking forward to discussing this opportunity
> > with you.
> >
> > Sincerely,
> >
> > Stanislav Rumega
> > 2000 Goldsworth Valley, Apt. #X-5
> > Kalamazoo, MI 49008
> > Telephone: (616) 387-5967
> > [email protected]
> > http://free.prohosting.com/~styrum/webresume.shtml
> >
> > OBJECTIVE:
> > To obtain a full-time Software Engineer, Developer,
> > Programmer, or Analyst position after graduation from
> > Western Michigan University in April 2000. Willing to
> > consider positions that are usually offered to
> > candidates with BS degrees too.
> >
> > SUMMARY:
> > - Languages: G (LabVIEW), Java, C, C++, SQL, PL/SQL,
> > HTML, SPARC Assembler;
> > - Systems: MS-DOS, WINDOWS NT/98/95/3.11, SunOs UNIX;
> > - Software: LabVIEW, Maple V, FoxPro, MS Word,
> > MS Excel, CorelDraw , Internet Explorer, Netscape
> > Navigator, various utilities and other packages;
> > - Fluent in English and Russian.
> >
> > EXPERIENCE:
> >
> > Teaching/Research Assistant, 1997 - Present
> > Department of Physics, Western Michigan University,
> > Kalamazoo, MI
> > - Taught undergraduate physics labs;
> > - Graded student papers;
> >
> > Project:
> > Developed a control and data acquisition program for
> > an electron spectrometer system in the WMU accelerator
> > laboratory. The program was written in LABVIEW.
> > The project involved controlling and retrieving
> > data from devices on a CAMAC crate as well as
> > GPIB (IEEE-488) instruments connected to the system
> > via a GPIB to CAMAC interface. A computer communicated
> > with the system via a serial (RS-232) port on the
> > crate controller.
> >
> > Engineer/Programmer, 1993-1997
> > The Association FACTORIAL-SERVICE, Rostov-na-Donu,
> > Russia
> >
> > - Supported all the available computer resources and
> > other equipment (a phone switching system, phones,
> > faxes, copiers, etc.);
> > - Selected, purchased, installed, configured all the
> > hardware and software used at the office;
> > - Installed and administered a LAN;
> > - Designed and coded applications;
> > - Fine-tuned complicated off-the-shelf Accounting and
> > Sales software which had their own built-in
> > languages and required programming;
> > - Trained users;
> > - Provided translations between English and Russian.
> >
> > Engineer/Programmer, 1992-1993
> > Joint Stock Company TRANSINFORM, Moscow, Russia
> >
> > - Provided some preparatory work and marketing for
> > the introduction of an X.25 packet-switched
> > computer network in Rostov-na-Donu, Russia.
> >
> > Engineer/Programmer, 1991-1992
> > Soviet-British Joint Venture MARINE COMPUTER SYSTEMS,
> > Moscow, Russia
> >
> > - Developed a FoxPro application to calculate traffic
> > accident rates depending on road conditions.
> >
> > EDUCATION:
> >
> > Candidate for Master of Arts in Physics,
> > 1997 - Present Western Michigan University,
> > Kalamazoo, Michigan
> >
> > Anticipated graduation date: 04/00.
> > Computer Science GPA: 3.8,
> > Overall GPA: 3.4 on a 4.0 scale.
> >
> > Computer Science courses taken:
> > - Computer Science II (Object-Oriented C++
> > Programming);
> > - System Programming Concepts (UNIX, C);
> > - Computer Organization and Assembly Language
> > (SPARC);
> > - Principles of Database Management Systems (SQL,
> > PL/SQL);
> > - Data and File Structures (C++);
> > - Programming in Maple V;
> > - Programming Languages (Principles of Programming
> > Languages, Web Programming: HTML, Java).
> >
> > Awards:
> > - Dean's List, 1998-1999;
> > - David Carley Memorial Award, 1998;
> > - Department Award for Graduate Student Teaching
> > Effectiveness,1999.
> >
> > 5-yr. Diploma in Radiophysics and Electronics,
> > an equivalent of an MS in Electrical Engineering,
> > 1991 Rostov State University,
> > Rostov-na-Donu, Russia
> >
> > Numerous courses in Mathematics, Physics, and Computer
> > Science taken.
> > GPA: 4.7 on a 5.0 scale.
> >
> > Project: Developed a simulation of a conveyor
> > multiprocessor system. The program was written
> > in Pascal.
> >
> > Awards:
> > - Received a higher stipend for high academic
> > achievements every semester, 1984-1987,
> > 1989-1991.
> >
> > ACTIVITIES:
> > - Graduate Student Advisory Committee, Member,
> > 1999-2000;
> > - Association of Information Technology
> > Professionals, WMU Student Chapter, Member,
> > 1999-2000.
> > - Volunteer Student Safety Patrol, 1989-1991.
> >
> > WORK AUTHORIZATION:
> > Authorized to work in US for 12 months after
> > graduation, which can be extended for up to
> > 6 years with employer's help through
> > petitioning for a working visa.
> > In Canada, an employment authorization (EA) must be
> > obtained before starting employment.
> >
> > REFERENCES:
> > Available upon request.

Wavetek 9100 - Error 1073807339

Hi my name is Said and I work in the National Institute of Industrial Technology of Argentina, in a calibration lab. We have a Wavetek 9100 Calibrator, Agilent 34401A Digital Multimeter and a NI GPIB IEEE-488-2 board. I have a problem with the Calibrator driver, in the transition from 90 V to 110 V in the DC and AC Voltage the instrument starts to ring an alarm and the program shows me the follow message: "Error -1073807339 occurred at VISA Read in wt9100 Error Query.vi->wt9100 Configure Output State.vi->wavetek multipoint VCC con array desde txt modificado 1.vi" and "Possible reason(s):
VISA: (Hex 0xBFFF0015) Timeout expired before operation completed."
Can you help me?
Thanks.
Attachments:
wavetek multipoint VCC con array desde txt modificado 1.vi ‏161 KB

Hi Sirs,
Please anyone can help me regarding error message on WAVETEK 9100; The unit is in stock for almost 2 years and it was owned by my company before, and it was closed now, and then when i started to operate the unit, the unit display reads "Selected test has failed number of failures 8" then all keyboard or button are all in active or not functioning and nothing happens on the display, it always hanged. What will i do, the manual says no detailed. Please help me on my problem.
Thanks and Regard to everyone.
Thanks and regards,
JOHN MARK

Where can i get IEEE488 standard

we are developing a product which including GPIB.
Could you pls tell me where i can get the GPIB standard

"I found a couple of knowledge base (KB) entries that talk about your question Where Can I Obtain GPIB (IEEE 488.2) Specifications?
The best way to find knowledge bases (KB) is to goto ni.com >> Support >> Advanced Search (option 3) >> type in the keywords, you will get them."

Looking for a 488.2 device driver for LynxOS.

Hi,
I am working on a NI6781 controller with integrated GPIB (IEEE 488.2) Device (PCI-GPIB, pci-Device Id:c801). The operating system is LynxOS 4.0.
Is there a device driver available for the IEEE 488.2 device for LynxOS?
Thanks
Harald

Hello Harald,
National Instruments does not provide a driver for the PCI-GPIB interface on LynxOS. We do provide a driver development kit (DDK) for GPIB that would allow you to implement such a driver if you would like to add support for another operating system (such as LynxOS). Please see http://sine.ni.com/apps/we/nioc.vp?lang=US&cid=4873 for more information on the DDK.
Scott B.
National Instruments
Applications Engineer

Connecting hp 8508a vector voltmeter with agilent 82357a usb/gpib converter

Hello
For my experiment, I need to connect to a HP 8508A vector voltmeter by using an agilent 82357A usb/gpib converter. I have a serious problem about communicating with my device using NI-VISA. I tried to do the steps indicated at following links which were indicated at the forum posts by people using 82357A:
http://digital.ni.com/public.nsf/allkb/F7C187DBF09EBE1186256F550065BD32?OpenDocument,
http://digital.ni.com/public.nsf/websearch/3B3626D9C1F999218625694200791AD7?OpenDocument,
http://cp.literature.agilent.com/litweb/pdf/5990-3731EN.pdf?cmpid=1273CN.
The version of MAX is 4.3.0f0 and i am using labview 8.5 with NI-VISA 8.2. I am trying to configure my 82357A using agilent io libraries suite 14.1.
First, I tried to configure my usb/gpib controller using agilent connection expert and set the visa interface id to GPIB6 and connect to the 82357A without any problems. Then I connect this gpib converter to my vector voltmeter. The gpib adress of the voltmeter was 6(gpib address of the interface converter was 10) so visa address GPIB6::6::INSTR was assigned to voltmeter by connection expert. I tried to connect to the voltmeter from the connection expert by using the agilent interactive IO. Send *IDN? command and took the proper response from the voltmeter. The voltmeter went into remote mode and I tried to read the voltage values by using the FETCH? command of the device and got the voltage properly which means I successfully connected to the device.Then I went to MAX and enabled the NIVISATulip.dll and restarted the MAX. Then I went back to agilent connection expert and checked the box: "use agilent 488 library where possible" for side-by-side communication between the NI and agilent visa. By the way agilent visa was installed as the secondary library. Then when I went back to MAX, I start to see the voltmeter under miscellaneous VISA resources with the address GPIB6::6::INSTR. But the problem started here. When I tried to send commands from MAX to voltmeter with the "open visa test panel" I encountered an error which exactly says:"unable to open session to GPIB6::6::INSTR, return status code:0xBFFF009E, status name:VI_ERROR_LIBRARY_NFOUND, a code library required by VISA couldn't be located or loaded." As I said before i enabled the libraries of agilent 488 from the options of the agilent connection expert. When I went back to connection expert and unchecked the box for using agilent 488 libraries nothing changed. Also when I went to NI-VISA interactive control I couldn't see my device under the tab of VISA I/O.
I tried to read some posts from this forum. People are using this usb/gpib converter successfully without any problems by performing the steps I have done. I have some questions about possible subtle points specific to my application.
First question is according to the manual of the voltmeter(this is an old device by the way from 1988):"vector voltmeter is capable of remote operation via the HP-IB which is HP's implementation of IEEE standard 488.1 "So, what I understand from this sentence is my device is communicating remotely with IEEE standard 488.1 and not 488.2 Does it make any problem? What kind of modifications should I do to my setup for overcoming this if it creates any problems? As I said before I was communicating with device very properly from the agilent connection expert. In manual there is also a sentence like "HP-IB commands used in the vector voltmeter conform to the standards set by document IEEE 488.2 1987."
Second question is should I install newer versions of agilent io libraries suite or MAX or NI-VISA. I wrote the versions I am using before are they compatible? Where can I install newer versions? As I know the newest version of the agilent io libraries suite is 15.1 or 2. Is is compatible with 82357a?(maybe I should ask this question to agilent people)
Third question I don't remember how I did it but agilent visa is indicated as secondary visa resource in agilent connection expert(I think I did it while installing agilent io libraries suite.) . How can I switch between NI and agilent visa as primary visa resource? Do you think think this will help?
I terribly need measurements from this set up and really appreciate your help if possible.
Sincerely
Caglar Yavuz, University of Michigan,Ann Arbor,EECS department.

Caglar,
The documents you mention ahould include the proper prcedure for using this hardware in LabVIEW. Here are my recommendations:
The version of NI-VISA you mentioned is not valid. The most recent version is 4.6.2. I would recommend ugrading if you do not have this version. After the upgrade,ensure that tulip is enabled as well as the other settings and see if this helps.
When talking about the instrument, the biggest concern that usually is relevant with 488.1 is that it will not respond to *IDN?. In your case, it looks like it does, and should work as 488.2 is backwards compatible. It seems to me, the issue is still with the 82357A, and we have not yet reached the voltmeter.
In order for NI-VISA to work with your device, NI-VISA must be the primary visa driver.
Hope this helps, let us know how the upgrade turns out. If you continue to have issues, take some screenshots of the preferences in MAX and upload them on the forum.
Regards,
Peter Flores
Applications Engineer

Preciso de um conversor de 4 a 20mA para GPIB. Voces fornecem

Gostaria de saber se vocês fornecem uma solução para medição de sinal de corrente padrão de instrumentação de campo (4 a 20mA) para protocolo IEEE 488 (GPIB). Um cartão de conversão ou algo deste tipo?

Acho que acidentalmente você colocou a sua pergunta no grupo de TestStand, que é um Software utilizado para automação de testes.
Basicamente a linha de produtos da National inclui entre outros produtos, instrumentos/placas para serem acoplados ao seu micro, chassis PXI ou fieldpoint bus.
Para leitura de correntes e tensões, a National Instruments oferece o Digital MultiMeter NI-4060 que é uma placa padrão PCI que quando acoplada ao seu micro pode efetuar leituras de corrente, tensão e resistência.
Na área de GPIB a National Instruments oferece placas GPIB e conversores de bus tipo GPIB-USB, GPIB-Ethernet, etc.
O catalogo online pode ser acessado a patir da página www.ni.com
Além disso, existe um grupo de discussão específico para instrume
ntos GPIB em exchange.ni.com. Em geral as perguntas são feitas em inglês, para que um maior número de usuários tenha acesso as perguntas e respostas.
Roberto Piacentini
Applications Engineer
National Instruments
www.ni.com/support

I have problems with pci-gpib card under windows me, What I need to know what to do in order to fix this problems?

Hi, I have installed a pci-gpib card in my computer, I have a problem with
installation, the message of troubleshooting wizard is as follow:
"One or more missing GPIB interfaces.
There are several reasons why you might encounter this problem:
Reason: Your GPIB interface is incorrectly installed.
Solution: Please verify that your GPIB interface is correctly installed
and rerun the NI-488.2 Troubleshooting Wizard.
Reason: You are using a non-Plug-and-Play interface (e.g., AT-GPIB/TNT,
GPIB-PCII/IIA, GPIB-ENET) and you did not use the Add New Hardware Wizard
to add the interface to your system properly.
Solution: Click th
e Add Hardware button and the Add GPIB Hardware wizard
will guide you through the process of adding GPIB hardware.
Reason: For the GPIB-USB and GPIB-1394, the host controller (USB or 1394)
must be working properly in order to use the GPIB interface.
Solution: Click on the System Details button for details about the USB and
1394 host controllers.
Reason: For the PCMCIA-GPIB and PCMCIA-GPIB+, the PCMCIA host controller
must be working properly in order to use the GPIB interface.
Solution: Use the Windows Device Manager to verify that your PCMCIA host
controller is functioning correctly. Start the control panel by selecting
"Start>>Settings>>Control Panel", open the System icon and select the
Device Manager page. If you select "View devices by type", you can look at
the PCMCIA socket properties to ensure it is correctly enabled."
And on system details the message is the next:
"USB Driver type: USB universal host controller"
"This version of windows does not su
pport IEEE 1394."
I am using Windows Me, so i want to know what i need to do to fix this
problems.
Best regards.

If you have a PCI-GPIB card, you needn't worry about the USB port or whether or not Windows ME supports 1394. All you need in NI-488.2 version 1.70 from National Instruments. Install this driver and then insert your card. Windows should detect the card and find the proper driver.
If this did not happen in the proper sequence, look in the device manager and see if the card was installed as an "other device". If this happens, remove the card in the device manager and have windows redetect it. If this is not a solution, you may consider the ask an engineer page at www.ni.com/ask. Provide as many details as possible.

GPIB IEEE materiel années 80

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