Help with XL2 log data???

[Kirkinsb]

Originally Posted by Pdelcast

Just for everyone's benefit--

The ICE datalogger (used in the XL/XL2) actually samples the current several times during each PWM cycle (synchronously), and then keeps a running average of the results. The samples are then written to flash memory at the programmed "sample rate."

So the sample rate is only the rate at which the averaged samples are written to memory -- not the rate at which the controller samples the current...

Make sense??

Ok, so my readings at 2/second are probably fairly accurate? And I am not missing any huge amounts of data by not using the 5/second setting? Yes/No? Hmmm, interesting. Is their much benefit to having the data written 5/second as opposed to 2/second since it is averaged? thanks Patrick.

[brian015]

Originally Posted by Kirkinsb

Ok, so my readings at 2/second are probably fairly accurate? And I am not missing any huge amounts of data by not using the 5/second setting? Yes/No? Hmmm, interesting. Is their much benefit to having the data written 5/second as opposed to 2/second since it is averaged? thanks Patrick.

No, your readings are more averaged than if you had the data written at a faster rate - so the real peak of the spike is averaged with lower currents on either side of the peak giving a lower average current written to the memory. Writing data at a faster rate should include less averaged data - so truer to the actual curve.

I think.