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ADC 11 won't give single reading at 5 min intervals

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ADC 11 won't give single reading at 5 min intervals

Postby Tim Stinchcombe » Tue Sep 28, 2010 9:26 am

HW: USB ADC-11/12 (s/no. GFY63110); SW Picolog 5.21.5

Hi,
I'm using the ADC to log battery charge/discharge voltages, which mostly don't change all that quickly, but when they do, I want to be able to track them, and so I want to take a single 'snapshot' reading once every 5 minutes or so. In the 'sampling' pop-up, whether I set 'readings per sample' to 'single' or 'as many as possible', it apparently looks like the value I'm getting back is some sort of average over the 5 minute interval, which is not what I want. (The input channel is set to DC volts, with a scan time of 50000us.)

Any ideas as to what am I doing wrong, or am I missing a trick somewhere, or what?

Thanks, Tim
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Re: ADC 11 won't give single reading at 5 min intervals

Postby ziko » Tue Sep 28, 2010 4:10 pm

From what I can understand, you want to take a block of readings every 5 mins.

So every 5 mins how many samples do you wish to collect?
For how long do you wish this to last for?

Kind regards
Ziko

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Re: ADC 11 won't give single reading at 5 min intervals

Postby Tim Stinchcombe » Tue Sep 28, 2010 9:59 pm

Hi ziko,
Thanks for the reply.
ziko wrote:From what I can understand, you want to take a block of readings every 5 mins.
I want a single DC voltage reading every 5 minutes.
So every 5 mins how many samples do you wish to collect?
Just one.
For how long do you wish this to last for?
Between about 5 hours (60 readings), and probably a maximum of 24 hours (288 readings).

Tim
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Re: ADC 11 won't give single reading at 5 min intervals

Postby ziko » Wed Sep 29, 2010 3:57 pm

You don't need to mess with scan time and readins per sample, all you would need to do is choos "Real time continious" and then choose a sampling interval of 5 mins. Hope this helps.
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