Instrument Control (GPIB, Serial, VISA, IVI)

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Glassman HV power supply resets

Hi,

 

I am experiencing difficulty programming a Glassman HV supply. I want to set the output voltage of the supply and cease communication with it. However, when I try and run the vi the correct voltage output is displayed on the PS but is set to zero when the vi is exited. My question is is there anyway that I can cease communication with this PS or do I have to continually communicate with the instrument in order to retain the desired voltage output?

 

Some background, I am using the PS as a stress voltage on a component for various amounts of time. The power supply works perfectly with it's supplied example vi. However this sample vi runs continuously and when I tried to copy the code in the sample vi I encountered the above problem. It seems there is a timeout issue with the PS.  

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Message 1 of 12
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Looks like you are using driver VIs.

You'll need to understand what it inside them to use them properly.

 

 

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Message 2 of 12
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Hi,

 

What drivers are you using to control the device?

 

SFuller

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Message 3 of 12
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Hi

 

Attached are the drivers I am using. These were supplied by the PS supplier Glassman. They work perfectly on the example vi provided, but when a simple send voltage output is ran the output voltage is seen but resets to zero less than a second after. I have looked inside the drivers but gained no further insight into why the output isn't maintained.

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Message 4 of 12
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@irlnh92 wrote:

Hi

 

Attached are the drivers I am using. These were supplied by the PS supplier Glassman. They work perfectly on the example vi provided, but when a simple send voltage output is ran the output voltage is seen but resets to zero less than a second after. I have looked inside the drivers but gained no further insight into why the output isn't maintained.


DId you bother to look inside the programmer's manual too?

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Message 5 of 12
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Yes I have looked in the programmer's manual repeatedly. The send data driver seems to just write a simple set command to the VISA adress, this command is received and output successfully. I just can't figure out why it doesn't maintain the set voltage. I am relatively new to LabVIEW and instrumentation so maybe I'm overlooking something very basic.

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Message 6 of 12
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@irlnh92 wrote:

Yes I have looked in the programmer's manual repeatedly. The send data driver seems to just write a simple set command to the VISA adress, this command is received and output successfully. I just can't figure out why it doesn't maintain the set voltage. I am relatively new to LabVIEW and instrumentation so maybe I'm overlooking something very basic.


Do you understand what each of the commands in the "simple" set of commands do?

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Message 7 of 12
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Hi

 

Here is an attached image of the voltage being set. I can't see why the voltage resets at the end of this execution. Any help would be greatly appreciatied.

 

Thanks for your interest so far.

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Message 8 of 12
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@irlnh92 wrote:

Hi

 

Here is an attached image of the voltage being set. I can't see why the voltage resets at the end of this execution. Any help would be greatly appreciatied.

 

Thanks for your interest so far.


Here's a hint:  Is Reset true?

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Message 9 of 12
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I have always sent reset as a false constant and has always been sent as false as you should be able to see in the image in my first post. 

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Message 10 of 12
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