Pico Technical Support and Discussion Forum

Guest · Posted: Tue Sep 14, 2004 7:32 am Post subject: problems triggering ADC212

Hi

i have 2 ADC212/100 units and i am using your adc200t.vi example to trigger them.
Sometimes the PC-oscilloscope starts taking data immeadiatly, even if there is no trigger signal, just noise of about a maximum of 20mV. The trigger is set to 2V (i tried other settings too) and enabled is 1.
the psd-file would be of no help as the signal itself is correct, it just shouldnt be taken.

The problem occurs on both units and with LabView and PicoScope.

Thanks for your help

markspencer · Site Admin Joined: 07 May 2003 Posts: 610

Hi,

I am sorry to hear that you are experiencing this problem.

Please can you provide additional information, what is the date of the adc20032.dll driver being used by both Labview and Picoscope.

What voltage range are you using in Picoscope and in Labview, in labview what is the ADC count being passed in the set trigger function.

Does it happen when you select Channel A, Channel B or both.

Once these answers have been received we will try to replicate the problem.

Best regards,

Guest · Posted: Wed Sep 15, 2004 1:03 pm Post subject:

well, i got to correct what i wrote.

the problem only occurs on one of the units, so i think it is rather a malfunction.
when the oscilloscope is active and it has been running for some time, it starts taking data, without crossing the trigger point. i think its probably a problem with the memory of this unit, because when powering it down and waiting a while, it works again

sorry for incorrect information

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Pico Technical Support and Discussion Forum