07-31-2010 10:50 AM
i am working on a project and I need to generate a gaussian pulse over a range of freq. and then calculate the group velocity.Anyone with any idea on how to go about this should pls help..
07-31-2010 12:32 PM
OK, so what's your question? Are you trying to generate a pulse for a virtual application? Are you trying to generate a pulse in hardware? Are you asking what kind of hardware you need? Have you looked at the Gaussian Monopulse function in LabVIEW? If you're talking hardware, are you trying to generate this with the 33120? Have you looked at the manual for that instrument? Have you looked at the drivers?
To learn more about LabVIEW it is recommended that you go through the tutorial(s) and look over the material in the NI Developer Zone's Learning Center which provides links to other materials and other tutorials. You can also take the online courses for free.
08-02-2010 11:00 AM
Thanks for your interest. I have used this function you advised i use but the problem I'm having is with the centre frequency, because it like there is a centre frequency to which all the frequencies have to be referenced. like if i enter frequency 5MHz, 10MHz, 15MHz its not producing any pulse except for decimal values like 0.05...
09-07-2010 05:42 AM
Hello Tess,
I wanted to catch up with you and see how you were getting on.
Did you have a look at your instrument's manual regarding its centre frequency?
Did you contact Agilent to see if they can help with the instrument's setup?
It seems like you are on the right track but have a small window to look at.
Let us know how you are progressing and if we can still help.
Kind Regards,
Michael S.
Applications Engineer
NI UK & Ireland
09-07-2010 06:59 AM
Do you have the User's Guide or the Programmer's Guide? Both can be downloaded from Agilent's website.
The User's Guide should provide instructions on how to set this up manually. You may want to do this step to verify the configuration that you want to implement.
Once you are happy with the manual setup, you should note all the configuration parameters and their values.
You then loopup the topic in the Programmer's Guide and it should show an example. Cryptic mind you, but an example just the same. They may mention what other configurations should be set when setting the instrument. They will show the command set to programmatically configure the instrument.
This is where you may need our help. You will need to tell us if you are connected to the instrument via GPIB, serial, ethernet, USB or other method. The 33120A rings a bell, so I think you may have a choice of GPIB or serial, unless it is a newer model.
You can also search this forum using "33120" as a keyword. I am sure there are posts on it. You can also search for LabVIEW drivers on this site or Agilent's site. The drivers may be quite useful as it provides an interface that you can use to "test" the instrument settings.
09-07-2010 07:10 AM
Here's the link to the LabVIEW drivers for the Agilent 33120:
If you are using GPIB, you will need to know the instrument ID on the bus. This will be needed to configure the VISA (GPIB) session.
THere is a function key on the instrument to display or set the instrument ID (GPIB number).
09-07-2010 09:31 AM
Thanks a lot for your interest. I had to learn and use the agilent waveform editor software as i had to run so many other tests with other agilent equipment, once again i thank you for your interest at helping me out.