- Tue Mar 26, 2024 12:35 am
#67644
I checked the voltaage on each wire and one have 0.6V and other 0.06V.
If I understood correctly, the wire with the highest voltage goes to vr+?
If this is correct, my wires were reversed and the original plan did not give the correct information.
Is measuring the voltage on each wire is the right way to know which wire goes where?
Thanks !
PSIG wrote: ↑Sun Mar 24, 2024 11:39 pmI reversed the polarities and put my setting to Rising Edge (MAX9926). I did a tooth logger and i has same result.Jason Rouillard wrote: ↑Sun Mar 24, 2024 5:50 pmI tried without sensor, with filter, with rising/falling and with a signal from my ICM and i has all of time same thing.Exactly. Keep in-mind, the Tooth Logger and the Composite Logger give different info. The Tooth Logger only shows time in any condition, high or low. So, the longer it is low, the taller the bar, and the longer it is high the taller the bar. Yours is a good example of the effects, and how the timing only shifts, as either high or low signal, Rising or Falling, the duration (time) of the wide teeth and gaps are the same, inverted or non-inverted. A Composite Log would be different info.
Where we see issues ("double bar") with the Tooth Logger is when the signal voltage drifts upwards or downwards in a "wide" space, triggering a high or low early, where there is no tooth (missing). Again, this is either incorrect polarity or setting to read the wrong signal edge. An irregular wheel may read perfectly in any combination where there is insufficient time for the signal to drift high or low early.
Finally, we say "correct polarity" so we know which sensor signal edge will be sharp and most accurate. And "correct edge setting" for the specific conditioner module to read that correct edge, that will not drift timing at high-rpm. Four ways to set up VR, but only one is optimal.
For an irregular wheel such as the GM7x, test your sensor for polarity separately, and connect to the proper VR inputs. Set your Trigger Edge for the specific VR conditioner module you are using. Then set your timing using Trigger Angle, with a timing light.
I checked the voltaage on each wire and one have 0.6V and other 0.06V.
If I understood correctly, the wire with the highest voltage goes to vr+?
If this is correct, my wires were reversed and the original plan did not give the correct information.
Is measuring the voltage on each wire is the right way to know which wire goes where?
Thanks !