GPIB Control of Spectrum analyser

Hi There
I have a HP 8591 EM spectrum analyser and EMC receiver I wish to control this via GPIB.
I would basically like to control everything from my PC if possible which covers everything on the front panel and to pull of all the data for analysis maybe in the fom of a csv file?????.
I have never used LABVIEW before so may I ask that no assumptions are made about how much I should know and any help on this would be greatly appreciated. I intend to use this set up for the analysis of PCBs in a home made faraday cage many thanks for your assistance

Mark.Boden wrote:
WOW the responses are fast . I am talking to the device however the *IDN? is returning an error. I will go to the manual of the device and look at the programmers guide but to get off plots would be helpful and I can then expand upon this once I learn more.
Thank you all for the help but keep it coming
That you tried to send that command is half the battle. There are probably just a few tweaks you need to do to get this thing going!
Bill
(Mid-Level minion.)
My support system ensures that I don't look totally incompetent.
Proud to say that I've progressed beyond knowing just enough to be dangerous. I now know enough to know that I have no clue about anything at all.

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Spectrum analyser in teststand

Hi everybody,
I have a question about spectrum anlyser with teststand.
I would like to use with teststand a spectrum analyser (IFR 2399C aéroflex).
I have the driver and those files:
Ifr2399.lib (msvc)
Ifr2399.lib (Borland)
Ifr2399.h, ifr2399_utilities.h
ifr2399.c, ifr2399.fp, ifr2399.hlp, Ifr2399.doc.
Ifr2399_32.dll & ifr2399.lib
I have install the spectrum analyser in the measurement and automation explorer where i defin the driver liker an IVI SpecAn.
now I don't know how to do to use it in tesstand. I don't find IVI SpecAn like i can fin IVI Dmm IVI Fgen...........
Can someone help me to resolve my problem ?
Best regards
Gauthier (french user)

Hello Gauthier,
I would try to get your instrument working with a progamming language before we started porting it over to TestStand. We want to ensure that the instrument will work properly first. You can post to the Instrument Control forum for help with IVI and instrument control issues as well. Lastly, I took a look at the screen shot you posted, and I noticed something. The ANALUSEUR FileGlobal variable is an object type instead of a long, which is what your dll calls for. This might a start, but I would definitely check out the Instrument Control forums. Have a great day!
Best Regards,
Software Engineer
Jett R

How interface keithley 230 programmable voltage source on a circuit containing Optical spectrum analyser and Tunable laser source.

i have downloaded the keithley 230 software and i put it together with the necessary strings,its working .my aim is to insert it in the existing vi,use it to step up voltage (auto)after each specified run and output is collected and ploted at each desired voltage level. also i dont know if sweep voltage is required to achiev this or if also i need to clear memory often.
Pls can somebody help me!!!!
ambrado.
Thanks, u ar great.

Hi engineer david ,
Thanks for your advise, so far i was able to resolve to this two VI circult attached.one of the Vi comprise of the attenuator,optical spectrum analyser,and tuneable laser source,it sweep correctly with no hiccup,though the attenuator is disconnected. the second is the voltage control vi.
I need to combine them to enable them work as follow;
>the voltage vi we begin with a voltage value say 1v and the other vi sweep on this voltage for a known period and
>the voltage Vi step to another voltage value say 2v and sweeping is carried out again on this voltage etc until it finaly get to the maximum voltage,then the whole vi
stop.
also i want the voltage vi to be in visa addressing format.
pls i need to summit this work soon,help combine this.
Kudos to u sir.
Thanks, u ar great.
Attachments:
MainVI v5_1billy.vi ‏84 KB
230V control module.vi ‏30 KB

What is the best tools for spectrum analysis

There are many spectrum analysis software component in the of NI product(SMT, advanced signal processing, basic ones).
May I know which is the lastest and best for use.
I am trying to collect data from DAQ 5102 then do FFT. Also, may need select centre frequency and frequency band etc.
A band pass or low pass filter may also need in the future.

Hey turbot,
Thanks for contacting National Instruments support. Each set of the vis you mention are the latest, and some use similar methods to do the FFT than the other. The SMT is usually the best in most applications. There is also another option in the case of scope, you can fetch FFT data from the driver. The FFT is not actually implemented in hardware, but in the driver, and this is transparent to the user. It's simpler to use, but not as efficient as the SMT.
I hop this answers your questions. Let me know if I can be of further help.
Regards,
Kenn North
Senior Product Manager - Search, Product Data
http://ni.com/search

Spectrum analyser for USB raw

Hi,
I am new to Labview. I have a 3rd party RFID device which i intend to acquire the frequency waveform from the device through using Labview. Since as a beginner, i use the spectrum analyser in the "example" section to start off with and now has error in getting the correct Visa USB raw to connect my device. The program intiallly used Visa instrument as the visa resource name but when i changed the input to the USB raw input there is a class conflict error that says "You have connected a refnum of one type to a refnum of another type and both types are members of some class hierarchy, but there is neither a simple up cast nor type cast between the two classes."
For the USB raw setting, i have already configured the device using the NI-driver wizard to install the USB raw and tested it through the MAX. So now i believe the problem should be wiring of USB raw to the entire spectrum analyser example. Attached is the spectrum analyzer example. Really hope to get help on this matter. Thank you.
Attachments:
Template - Spectrum Analyzer Acquire Trace.vi ‏25 KB

duplicate post: http://forums.ni.com/ni/board/message?board.id=170&message.id=489189

Creating a Spectrum analyser

I'm new to Labview and am trying to create a spectrum analyser for use with a accelerometer providing an variable output of 1 volt/g. I'm using a 6024E Data aquisition card which works with other instruments. I'm having a few problems with the program i've created in that it doesn't give the expected spectrum (i've connected the accelerometer to a real spectrum analyser). I've looked at the various examples provided with labview but none seem to be able to offer any help. I've included the file and any help would be really appreciated!
Thanks in advance
Attachments:
spectrum_analyser.vi ‏86 KB

In a discrete measurement system, the Nyquist criteria requires you to sample your signal at a rate that is at least twice the bandwidth (or span) you want to measure. In praxis values like 2.50, 2.56 (or higher if oversampled) are used.
So when you expect your span to be 20 kHz you should sample at a rate of at least 2.5*20 = 50 kHz. The same story applies to your "number of lines", so if you request your measurement span to be 800 lines wide, you should acquire data blocks of 800 * 2.5 = 2000 samples.
I have modified your VI to reflect that. If needed you can change the constant value "2.5" to a higher value (like 5.00 or 10.0 depending on the board you are using) to reduce effects of aliasing on your measurement results.
Attachments:
spectrum_analyser[corrected].vi ‏94 KB

Free spectrum analyser with verbal prominent frequency info?

I'm looking for a free spectrum analysis tool, which scans a track and reports in real numbers the prominent frequency. - Eg, "-42 dB at 108 Hz".
The Spectrum Analysis tool in SoundForge can do this well, but I need something for the Mac. - Also, the ability to zoom in on different areas and find, for example, the prominent frequency above 1kHz or whatever would be good.
I know there are many graphical analysers out there, but reading an exact value off is very difficult.
It needs to be free, either as a plug-in (AU), or a stand-alone application for OS X.4
Does anyone know of such a thing?

it depends how accurate you want it.... The ones from waves - Logic - etc... are very inaccurate - but if u only wanna have some idea of what frequency you are having they are all just fine.. If u want an accurate visual of what the audio is doing you are going to have to invest a little money... I bought the SpectraFoo - from Metric Halo - it is pretty ** good - but - it aint no oscilloscope --- BUt it'll do for me it has a discrepancy of maybe 3% which is very very good - the waves Frequency Plug in - has a discrepancy of up to 15% (the lower the freq. higher the discrepancy...
Maybe you could try a demo of the various ones - and see what works the best for you - I know for sure that u can Demo Spectrafoo for 10 days - in a full mode
Good Luck

Spectrum Analyser for GB?

Hi just wondering if there is a spectrum analyser or plugin available for GB? im trying to do some basic mastering & im wanting to see what some of the frequencies are doing.
cheers

Hi,
Yes, here you go:
http://www.rogernicholsdigital.com/download_Inspector.htm
WH [:c)~
old G4 Mac OS X (10.4)

Spectrum Analyser Programme

Hi
I want to view the spectrum of a sweep sine signal from 100 to 1000 Hz. I am taking the input signal (from a mic)through an analog input of a M6259 DAQ card. I am using Labview 7.1. The spectrum analyser programme I have made omits some of the signal and I get a sine+square with some jitter. I would be greatfull if some one can some one check this.
Thanks
Mal
Attachments:
Spectrumanalyserfor speaker.vi ‏132 KB

Hi Mal,
From the looks of the signal you have there, the card is only acepting
a 0-10V signal. If you go into Measurement and Automation Explorer and
use the Test panel do you get the same result? Can you check the signal
on a scope or something to make sure its correct?
Regards
Jon B
Applications Engineer
NIUK

How can i measure SNR(S/N)value using FSP Spectrum analyser

hi ,
I want to measure S/N value using spectrum analyser.i already installed rsspecan instrument driver.I also configured span,center frequency ,RBW,VBW etc but i am not able to get measured S/N value.I have attached my vi here with.how could i measure SNR Ratio??can you please help me!
thanks.
Tadhika
Attachments:
Unbenannt 1.vi ‏77 KB

Hi, first of all I'd recommend to contact the R&S customer support center to be shure the measure the correct value. Did you really measure the actual noise, or do you measure the noise which is "only" displayed?
But anyway, did you have had a look at this example: http://www2.rohde-schwarz.com/file/rsspecan_lv8_noise_marker_example.zip
There is the setup of one noise marker shown. With your already existing marker value this should do the trick, also in case of two noise markers; just use the rsspecan Configure Marker Noise Measurement.vi again with input parameter <YourMarker+1> of the "Marker" input of the VI.
Hope that helps?
juergen

GPIB control of HP 6034A power supply

I would like to find drivers for GPIB control of HP 6034A power supply (LabVIEW 6.1). There are drivers HP6xxxA for power supplies 6033A, 6035A, 6038A, ... Could anyone give me information how to modify these drivers for 6034A or any other directive. Jokut

You might post your answer in the Instruments Connectivity >> GPIB section of the NI Exchange forum.
Roland - LV DSC Exchanger
PS: Most of the time you might just change the initialisation string of the instrument setup function/command if the instrument is similar to the dirver you already have. But this is all relative to the instrument - Unfortunatly I don't know the driver nor your instrument.

Sample LV-program for the old HP spectrum Analyser 3585

Hello,
I need to use the HP spectrum Analyser 3585 for some measurements. I need to export data from this analyser to excel.
Has somebody anything to help my further, it will be a big save of time for me.
Thanks,
Gert

Hi
see this implementation and reply also when it works.
greetings from the Netherlands
Attachments:
HP3585A readout.zip ‏575 KB

In MAX, how do I release GPIB control of the instrument without restarting my scope?

n MAX, how do I release GPIB control of the instrument without restarting my scope(HP54120B)?

Hi,
I don't think I understand what you are asking.
If you are refering to the instrument's front panel, which locks when the instrument goes to remote mode, then it depends on the instrument how it can go back to local.
Some instruments will go to local by pressing any key, others a particular key. Refer to the instrument's documentation.
There is also a NI-488.2 function that makes the instrument go to local: ibloc.
Hope this helps.
DiegoF
National Instruments.

GPIB-Controlled XHR Power Supply and HP34401A DMM Conflict

Dear Experts,
I downloaded a driver for XHR Power Supply from NI's website and used
it to controlled the power supply successfully via GPIB cable in
LabVIEW. However, when I used HP34401A digital meter to measure the
voltage from the power supply in the same way via GPIB cable, the XHR
power supply was shut down automatically although the meter read the
measurement correctly before shutting down. Since I am a new user of
LabVIEW, I do not know if it is a conflict of GPIB-Controlled
instuments.
I would be most grateful if you could give me some advice and tell me how to solve this problem at your earliest convenience.
Thanks a lot for your attention and help,
James

You can set LLO with the VISA GPIB Control REN function. This is on the Instrument I/O>VISA>VISA Advanced>Interface specific palette.
You do not use the same VISA session for two different instruments. Each must be different and unique. If they were the same, then the be would be using the same address and your program would not work.
To make a sinlg VI that will control both instruments, just take the functions you need from each and put them into a single VI. The author of the XAN power supply drivers did a kind of lame thing. The Getting Started VIs do not have their controls and indicators wired to the VIs connector pane so you would have to change this before using the Getting Started in another VI. I've attached a simple example that shows some of the other functions along with some 34401 functions in a single VI.
Before you get going, I would recomend that you take a LabVIEW programming class. Information can bge found at http://www.ni.com/devzone/lvzone/fundamentals.htm.
p.s. You should know that your email address is not available to forum users. If you wish an example program, you can request it be posted here but you need to provide the version of LabVIEW that you're using and you need to provide the exact name of the XAN driver you're using. I found three and don't know shich is which.
Attachments:
two instruments.JPG ‏51 KB

Will somebody provide me with a QBASIC 4.5 PROGRAM for Interfacing with a Anritsu make(model-MS710) Rf spectrum analyser through GPIB ( NI-488.2 ) in DOS environment? I would like to aquire from the instrument and save the data in PC.the data

Will somebody provide me with a QBASIC 4.5 PROGRAM for Interfacing with an Anritsu make(model-MS710) RFspectrum analyser through GPIB ( NI-488.2 ) in DOS environment? I would like to aquire data from the instrument and save it in PC for printing purpose.

Hello,
Unfortunately I was unable to find a driver for this instrument. This leaves you with one of a couple options. First, I would like you to submit a request for this driver at:
http://www.ni.com/devzone/idnet/other.htm
We develop drivers in CVI and LabVIEW based on demand and popularity so the more requests we have for it, the greater the possibility that we will develop one. While this would not provide you with a QBASIC program, you may be able to create a DLL that you could call from QBASIC.
If you would like to try developing your own instrument driver (or modify the existing one), we have documentation, model instrument drivers, and driver templates to help at :
http://www.ni.com/devzone/idnet/development.htm
We also have a syndica
te of third party vendors that specialize in National Instruments' products and services. Some of the vendors specialize in driver development. I would suggest contacting one of the Alliance members at:
http://www.ni.com/alliance
Good Luck,
Kim L.
Applications Engineer
National Instruments

GPIB Control of Spectrum analyser

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