Instrument Control (GPIB, Serial, VISA, IVI)

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SR830 lock-in-amplifier programming

Hello!
I need to send a signal via GPIB to the AUX OUT using a labview.
I can pass one value in volts with a command.
But I don't understand.
Do I need to write a cycle in which I will consistently transmit voltage values for each point in time?
or can I create a signal in labview (using ready-made components) and transmit it completely?

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Message 1 of 7
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Hello OrangeBox,

 

Can you send a block diagram of what you are trying to do or your code? I do not completely understand what you are doing right now. If you are using GPIB to connect with your instruments what commands are you sending out? From the image that is attached to your post, are you trying to produce the red signal? The more information I can get from you the more I can help!

 

Garrett W. 

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I use drivers http://sine.ni.com/apps/utf8/niid_web_display.model_page?p_model_id=1536 and I didn't write the code myself.

I don't have Labview in home PC. But I will be in my laboratory tomorrow and I will send you block diagram or code. ))

I need red signal + sin(1000t).

(time dimension in my picture is seconds)

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If I understand correctly, I must make analog signal, convert it in a digital signal (data array) and send every value of the array in a loop with some discretization. 

Right?

sry for my english

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Message 4 of 7
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Hi OrangeBox,

 

What is the overall goal of this project again? I'm just trying to get a clear picture of what you are doing. 

 

Thanks,

 

Garrett W.

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Use the device as a generator.

But in general I work on diode laser spectroscopy using the lock-in-amp to increase a sensitivity of our setup

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Message 6 of 7
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Lockins are not waveform generators.  The Aux Out is for monitoring you lockin signal, not getting a waveform output.  You will need a separate waveform generator for use in your setup.

 

 

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