Ecumaster forum

what is arming voltage for trigers? is it absolute or % from peak to peak? and what is threshold value on falling edge? now i have problem with primary triger on subaru ej205 engine, i can see only 24 teeths on ecu scope, from 30 teeths which i can see on electric osciloscope (36-2-2-2 trigger wheel). my peak to peak voltage is 3-4volts when cranking. tommorow i will have better scope so i will be more specific if necesary. thanks for help

It is correct. Subasu trigger is converted to multitooth 12.
If you want to see the full scope select trigger multiottoh or missing tooth. Check then if the trigger edge is c0orrectly selected.

actualy i figure how to deal with secondary triger couple minutes ago (hopefully) , i have two teeths on cam wheel with gap ratio 413:136 (in ms when cranking) with #1 cyl firing after big (413) gap so after some calculations i figured out that "Missing tooth" or "vw 1.8t" trigger pattern (prevDT<DT*0,6) will fit my case. i will test tomorow but confirmation of my idea wiil be nice i was allso considering "2missing teeth" but result of comparation was more significant with previous two.

allso with this 12 tooth pattern i cannot use crank sensor only, and wasted spark corect?
answered in newest help in 1.128 which i download now - it will work with no cam sensor in wasted spark mode

allso im not sure if i have rest of my primary table setted correct, cannot found it in manual (now i found in help for ver. 1.128) so i set:

vr sensor - straight forward no need of explanation
pull up - straight enough
type: 36-2-2-2 - i found so i set
edge: falling - straigt enough
number of cyls - used to detemine tdcs?
num teeth incl miss - still needed to set to 36?
first trig tooth - 0 - i set cause i hope that you count from 0 and my tdc is very close to gap so i use only angle to match ecu tdc to engine tdc
angle : 40° - i set it like my tdc is somewhere between 3 and 4 tooth will be adjusted by scope
gap detection: ???????? how it afect gap detection? bigger number tolerate smaller gap then usual????
edge rejection: ? my tooth is 10° so i set to 8
scope : straight enough
lock : straight enough
angle lock :straight enough

im allso not sure if it is ok that cam sync came in crank gap, shouldnt it be between teeths?

how it affect value of "Cam sync trigger tooth" ?

Please try the following settings:

[img]https://dl.dropboxusercontent.com/u/28620292/SUBARU.png
[/img]

Of course check the timing with the timing light

Sorry but you are not answering my questions and in help or manual is not enough informations. I dont need result, i need to understood how to do it properly by myself i actualy bought 4 ecus allready and i dont want you to set them for me, i need to know how to work with them by myself...

For primary trigger and VR sensor there is adaptive input and arming threshold under 0V (so the signal must cross 0V). It is very noise immune. The minimum voltage range is 250mV PP.
For Hall there is threshold fixed at 3V with the hysteresis.

For CAM inputs there are two thresholds: 300mV for CAM sensor (+ hysteresis) and 3V for HALL sensor.

Some triggers like Subaru are converted to multitooth (eg. 12 tooth for Subaru).

I hope it clears you thing, If you have more questions feel free to write.

I still have lot of non sync isues during cranking and above 4500rpm i have new shielded cables routed directly from ckp and cam sensors to ECU away from rest of loom, now im considering to grind of secocond tooth from CAM wheel and use only one tooth. Is it good idea? And which oné is better to remove?