Auxiliary Input Channel Configuration

General Topics for configuring, operating and tuning the Megajolt. Also see the <a href="http://www.autosportlabs.net/MJLJ_V4_Operation_Guide">Operation Guide</a>

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laroguz
Posts: 5
Joined: Fri Sep 18, 2009 7:53 am
Location: Elsloo, The Netherlands

Auxiliary Input Channel Configuration

Post by laroguz »

I have some problems with my Auxiliary Input Channel Configuration. I put a AFR signal on the Auxiliary Input and tried to visualize it on a runtime gauge.
There are 255 values which correspond to the 0-5V. I made up an calibration range for AFR from 100 to 200 (255 units) which corresponds with 0-5V. I can put it in the column "Scaled Value" and then write the calibration, but on the runtime gauge I keep seeing a scale from 1 to 255.
What am I doing wrong?

regards
Wim

brentp
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Post by brentp »

So yes- you can re-map the measured value to a displayed value between 0-255 - however, the min-max value of the gauge stays the same.
Brent Picasso
CEO and Founder, Autosport Labs
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laroguz
Posts: 5
Joined: Fri Sep 18, 2009 7:53 am
Location: Elsloo, The Netherlands

Post by laroguz »

Hi Brent,

I don't think I understand completely. I have the following 3 ranges.
/ADC value /Voltage /Scaled value
/0------------/0V-------/100(corresponding to 10:1 AFR)
/.-------------/.---------/.
/.-------------/.---------/.
/.-------------/.---------/.
/255---------/5V-------/200(corresponding to 20:1 AFR)

If I read a value 135 for the Aux input in the datalog, should I place it in the scaled value range and read 13,5:1 AFR or should I place it in the ADC value and transfer it to the Scaled value range which is 153 corresponding to 15,3:1 AFR

regards
Wim

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