Hi,

I'm using a Picolog 1216. When collecting data from the Picolog the voltage resolution is around 0.5mV which is limited by the different between integer adc counts. However, with the PicoLog 6 software the resolution is much higher. How is this the case and how would I get a similar precision from data collected in MatLab?

Thanks,

James

## Matlab Resolution is worse than Picolog 6 Software

### Re: Matlab Resolution is worse than Picolog 6 Software

Hi James,

How are you determining that the PicoLog 6 resolution is larger? (could you give us some example data).

Regards,

Gerry

How are you determining that the PicoLog 6 resolution is larger? (could you give us some example data).

Regards,

Gerry

Gerry

Technical Specialist

Technical Specialist

### Re: Matlab Resolution is worse than Picolog 6 Software

Hi Gerry,

In the PicoLog software the data is quoted to the nearest 0.001 mV. For example in a set of data that I took the first two values were 0.914608 V and 0.914609 V. When using Matlab to collect data, the maximum ADC value for the Picolog 1216 is 4095 so the resolution of the data is set by 1x2.5/4095=0.6 mV and this is reflected in the data.

Thanks,

James

In the PicoLog software the data is quoted to the nearest 0.001 mV. For example in a set of data that I took the first two values were 0.914608 V and 0.914609 V. When using Matlab to collect data, the maximum ADC value for the Picolog 1216 is 4095 so the resolution of the data is set by 1x2.5/4095=0.6 mV and this is reflected in the data.

Thanks,

James

### Re: Matlab Resolution is worse than Picolog 6 Software

Hi James,

Could you post a Picolog data file so that we can see what is being captured.

Regards,

Gerry

Could you post a Picolog data file so that we can see what is being captured.

Regards,

Gerry

Gerry

Technical Specialist

Technical Specialist

### Re: Matlab Resolution is worse than Picolog 6 Software

Hi Gerry,

Here is some sample data from Picolog: and some from MATLAB Thanks,

James

Here is some sample data from Picolog: and some from MATLAB Thanks,

James