Digits truncated in GPIB read with HP 8593 spectrum analyzer

When I read the information from the HP spectrum analyzer, only the first digit is read .
It works fine with other instruments

Can you provide some sample code of what you are doing?
What instruments does it work for?
By digit do you mean one bit, one byte, or one reading?
Were you expecting one reading or an array of readings?
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How to read the data in spectrum analyzer (Anritsu MS2661C) and put it in Excel using Labview

Hi all, I'm new to using the labview, and I have some trouble doing my project using the labview software.
I have been trying to use the spectrum analyzer (Anritsu MS2661C) which connect to computer using the GPIB connection.
I have got the instrument driver which can write and control the instrument using Labview 2010.
and my Question is how do read the data or result from the spectrum analyzer and send it to the microsoft excel?
Do I need to use other software or programming to do this step?
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Hi ery,
In order to send data that you have read in from an instrument to Excel, the most convenient way to do this would be to use our Report Generation Toolkit. The Report Generation Toolkit is a very useful tool that allows you to interface to Microsoft Office software from LabVIEW, including Word and Excel. I am not sure if you are familiar with this, but I have attached a link that explains more about the Report Generation Toolkit below.
Another way would be to use the Write To Spreadsheet File VI. While this will store your data to a spreadsheet data file, it will not allow you to programmatically perform any Excel formatting like the Report Generation Toolkit offers. I have also attached a link to some information on the Write To Spreadsheet VI below.
Also, be sure to check out the Example Finder in LabVIEW for a number of examples on how to write data to a spreadsheet file. From LabVIEW, you can go to Help»Find Examples to launch the Example Finder. From there, you can search for "spreadsheet," which should populate examples for use in different applications. I hope this helps, ery. Please let me know if you have any further questions about these!
NI LabVIEW Report Generation Toolkit for Microsoft Office
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Taylor G.
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www.ni.com/support

GPIB read freezing when running vi without debug light ... (it works with the light)

I have a gpib read that spits out two values at a offset. This is in a loop thats defined by the initial , final and step size parameters. My question is, why does the gpib read freezes (or doesn't exectue; whenever I turn the debug light on(after it's been run), it 'lights' up only till the gpib read and nothing further). I replaced the gpib read with visa read , it doesn't freeze anymore but it only records zeros (when I can clearly see my system outputting some values). Any help would be appreciated.
*there was a similar topic about debug light and the reasoning was made to be a race condition. but I dont see how my situation is a race condition.
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Solved!
Go to Solution.
Attachments:
racecond.PNG ‏37 KB

kb003 wrote:
Cleaning up...for me thats the cleaned up version. I'm still figuring out labview.
Stacked sequence made the perfect sense in a 1-2-3 logical reasoning.
<snip>
I wrote my code from an ancient driver set. I figured why to mess with something that's already working. So, I built it all on gpib.
This brings up an ancient scrap I have with National Instruments. Namely, they advertize LabVIEW as something so easy to use, you can dive right in. Well the truth is, you can dive right in, but it's guaranteed you will be writing horrible code, and much more easily than with any other programming language.
In reality, you really have to have training, formal (classes) or informal (books on LabVIEW), just like with any other programming language. Because NI keeps promoting the LabVIEW Falsehood, you get managers that assign newbies to write complex code, and then you have issues like the one the poster has above.
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Working with Binary data from the Gpib Read Function

I m using the gpib read command to recieve data from a gpib instrument. I already know the form of the binary data being sent back. I have programmed it in matlab before. I am haveing trouble parseing out the binary data I recieve. the basic form of the data is
#I immediately followed by 401 64 bit ieee floating point numbers. When I programmed this in matlab the code I used was of the form:
[a,count,msg]=fread(g2,2,'int8');
[a,count,msg]=fread(g2,401,'float64');
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In the above two lines I use the variable a twice to capture the data. The first time a is set equal to '#I' everything inside the qoutes. The second time a is set equal to the actual data, in this case 401 64bit floating point numbers. I m convince that the flatten to string and unflatten from string function are the set meant to accomplish this task. But I haven't been able to find a good example of how to use these functions. Especially with an array.
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I'm pretty sure what you're describing is a simple typecast in LabVIEW. You will want to strip off the #I first, using string manipulation functions. Then, you can wire the string into a "typecast" VI, and wire a double precision float constant to the top connector of the typecast (this tells the VI that you expect a 64 bit float output) and then you can read your resulting array of double precision floats on the output of the typecast. The typecast VI is found in All Functions >> Advanced >> Data Manipulation.
I've attached an example in LabVIEW 7.0 and also 7.1 format.
Scott B.
Applications Engineer
National Instruments
Attachments:
typecast.vi ‏11 KB
typecast.vi ‏13 KB

Can I use my Samsung Galaxy 3 as my reader with digital editions?

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Hello all,
Being slightly new to LV (3 months of casual use, and 1 month of really getting to know it)...
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How can I convert output data (string?) from GPIB-read to an 1D array?

Hello all,
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Message Edited by Troy K on 03-23-2008 11:37 AM
Troy
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Beware of the man who won't be bothered with details. - William Feather
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Send data from GPIB Read Function to XY Graph

hello
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first of all, thanks a bunch for replying
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Picture 1.png ‏11 KB

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Digits truncated in GPIB read with HP 8593 spectrum analyzer

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