faster AC voltage measurement readings with hp34401a

[jetfire]

Hi,

I am using the hp33120a to generate sinus  signal with frequencysweep und record AC voltage measurement readings with hp34401a . This measurement however I consider to take exceptionally long for what it is(approx 3 seconds per measurement).here i post my code ,If anyone can give me some ideas how to speed up these readings that would be appreciated.

 i

Thanks

Note: Labview 2009 SP1

[nyc_(is_out_of_here)]

Without any code it is hard to tell.

[jetfire]

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@nyc_(is_out_of_here) wrote:

Without any code it is hard to tell.

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thanks,i have just posted my code

[crossrulz]

Is the DMM taking that long to do the measurement or is your code taking that long?  Do you have filtering on?  What is the appature rate in the DMM set to?

Yes, it would help to see code.

[crossrulz · Accepted solution]

You shold not be reinitializing and closing your VISA resouces for every measurement.  Initialize you equipment once before your main loop, close them once after the main loop, and perform your reads inside of the loop.  This will cut down a lot of overhead communications that you don't want.

[jetfire]

thanks for your advise,i am new to Labview,according to example and device driver of NI i have writed this Code.

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@crossrulz wrote:

You shold not be reinitializing and closing your VISA resouces for every measurement.  Initialize you equipment once before your main loop, close them once after the main loop, and perform your reads inside of the loop.  This will cut down a lot of overhead communications that you don't want.

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