What is the sampling rate of DMM in virtual Bench if I connect to it LabView?

[ku22]

I would like to get an continous electrical resistance measurement  so I connected my virtual bench to the labview.Hovever, it takes one sample per second. How an I increase this ? As far as I know , data logging stops at every 100ms for DMM in Virtual Bench  so I should get a data at every 200ms.

[ZachHindes]

Initiating an acquisition on the VirtualBench DMM is software-timed, but the acquisition itself is hardware-timed.  Therefore, there is some maximum rate at which you can sample, but there isn't a way to guarantee a specific rate.  There are also a few tips for acquiring faster with the DMM:

• Use USB (instead of Wireless or Ethernet)
• Make sure you configure the instrument outside of your loop
• Don't use Auto Ranging
  • Especially when you have a floating signal, Auto Ranging can take a while to decide it is not reading something meaningful.  If you do have a pretty stable signal, Auto Ranging should acquire just as fast as specifying a range.

With this VI (which looks kind of ugly because of my timing), I am able to get ~4.8 Samples/sec on the VirtualBench DMM.  With auto-ranging it was the same, but like I said you should be careful with that.

[ku22]

Thank you very much for your reply. May I kindly ask you to send it to my e mail address as block diagrams?

ozguratalay@seas.harvard.edu

cheers

[JoeFriedchicken]

NI provides several downloadable examples. Here is the one for the DMM: http://www.ni.com/example/52069/en/

[ku22]

Hi there 

 Thank you very much for your reply, I have one more question ,what did you write in iteration blog?

cheers

[JoeFriedchicken]

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ku22 wrote:

I have one more question ,what did you write in iteration blog?

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I'm confused by your question. What are you referring to when you say "iteration blog"?