Analog input sampling frequency

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jun1or
Posts: 127
Joined: Tue Apr 14, 2009 10:09 am

Analog input sampling frequency

Post by jun1or » Fri Feb 06, 2015 12:51 am

Hondata,

I have read that not all analog inputs are alike, I.E. some allow higher sampling frequency. Obviously Traction Control requires the highest sampling rate.

Questions I do have:
1.) What are the sampling frequencies of ELD, EGRL, and ECT2 for 06-09 S2000?
2.) At one point you made reference to removing ECT2 as a viable input on 8thgen civic forum due to low sampling frequency of 10 per second. http://www.8thcivic.com/forums/hondata/ ... hread.html. Did this happen? I see the documentation page for FlashPro ECU connections still reflects ECT2 as a viable analog input. http://www.hondata.com/help/flashpro/in ... ectors.htm
3.) Lastly, please rank or correct the order in which sensor outputs require the highest to lowest sample frequency for reliable operation.
  • a.) Traction Control (highest)
  • b.) Wideband o2 (high)
  • c.) Flex fuel sensor 0-5v (low/med)
In the case of #3, would the recommended configuration be TC = ELD, WB = EGRL, FlexFuel = ECT2?
May I recommend adding the sampling rates to documentation? Or at minimum a note of low sampling rate for ECT2?

Thanks in advance,

JR

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Hondata
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Re: Analog input sampling frequency

Post by Hondata » Tue Feb 10, 2015 1:49 pm

They are all around 100 Hz, with the exception of ECT2 which seems to be 5-10Hz. We've left ECT2 in as an option, because the same module is used for all analog inputs and it is easier that way. plug other vehicles don't (or may not) have the ECT2 limitation.
So I would use any input other than ECT2 (on the Civic at least) for the TC input.
Hondata

jun1or
Posts: 127
Joined: Tue Apr 14, 2009 10:09 am

Re: Analog input sampling frequency

Post by jun1or » Tue Feb 10, 2015 7:58 pm

Hondata wrote:They are all around 100 Hz, with the exception of ECT2 which seems to be 5-10Hz. We've left ECT2 in as an option, because the same module is used for all analog inputs and it is easier that way. plug other vehicles don't (or may not) have the ECT2 limitation.
So I would use any input other than ECT2 (on the Civic at least) for the TC input.

Wonderful, thanks for the clarification.

May I suggest adding the aforementioned to the documentation to help others in deciding inputs to use?

Also, how is resolution on ECT2 on 06-09 s2000?

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