Setting up frequency sweeps using HP33120A

I am trying to set up a frequency sweep in LabVIEW by programming a HP33120A Function Generator. Would appreciate if someone who has worked on it suggest a method appropriately. Thanks!

By manually, do you mean from the front panel? If you really mean programtically, then use ag33xxx - Config Waveform like I said inside a loop. A shift register would be initialized to your starting value. Inside the while loop, wire the shift register to the frequency input of the ag33xxx - Config Waveform function. Also inside the loop, increment the shift register by another control that you specify a value for. Add another control for a stop value and terminate the while loop when the current value of the shift register is equal to/greater than the stop value. I've attached a picture that I did just a couple of days ago for an almost identical question (just a different instrument). The picture has a constant for the start and stop value so if you want to use different values at times, replace them with controls.
If you want an uneven step value, you can place an array of values outside a for loop and auto-index the array.
Attachments:
Increment 370A.JPG ‏8 KB

Similar Messages

  • Frequency sweeps using HP33120A

    Hi,
    i am new to Labview 
    I am trying to set up a frequency sweep in LabVIEW by programming a HP33120A Function Generator.with device Driver have i implemented Sweep with same Step in my posted Code,now i want to improve Sweep function durch varied step in different frequency range,for example,from 10 Hz to 1000Hz ：10Hz to100Hz with 10Hz step sweep, from 100Hz to 1000Hz with 100Hz step sweep.  Would appreciate if someone who has worked on it suggest a method appropriately. Thanks!
    note：Labview 2009 SP1
    Attachments:
    fast frequency measurement program.vi ‏248 KB

    Dennis_Knutson wrote:
    It seems overly complicated to me, especially with that silly sequence structure. All that you have to do is use the Ramp Pattern to create an array of frequencies. Use two of them with different a different delta and combine the arrays. Pass the combined array to a for loop with the function to set the frequency and let the magic of autoindexing do its thing.
    thanks for your suggestion,i try it later

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    Barp - Control and Simulation Group - LabVIEW R&D - National Instruments
    Attachments:
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    Hi
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    Message Edited by andinew on 08-11-2009 04:14 AM
    Attachments:
    sweep.vi ‏216 KB
    create_log_frequencies.vi ‏15 KB

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    Message Edited by SFK on 08-12-2009 04:12 PM
    Attachments:
    Multi-Function-Synch AI-AO mit Signalgeneration.vi ‏91 KB

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