Hooking up Lm-1 wideband to SCT XCal3

3

376shovel

New member
Anyone have a definitive guide as to how to hook this up? Lm-1 from innovate, hooking up to an SCT XCal3 via FireWire cable. I did it back in June but since forgot. I can't find a guide online that tells me exactly which wire goes where. I have seen the pinouts for the FireWire and all that, but do both grounds get hooked up, and then grounded together? And the analog wires that get hooked together, do they just get hooked together, or also into a 12v source? Very confusing when reading articles Les online about it
 
I've never hooked the LM1 into an Xcal device, but I would just connect the corresponding wires from the serial to the firewire ends. And yes ground everything to the same point. Shouldn't have to hook up a 12v source. The LM1 is just outputing the proper 0-5v signal that is being fed into the xcal.
 
Blown3.8 said:
Some reading material.

https://www.innovatemotorsports.com/resources/Xcal2_tutorial.php

I like this focus one.
https://www.focusfanatics.com/forum/general-forced-induction/177202-how-datalog-wideband-xcal-3-a.html
Click to expand...


Those are exactly the materials I was referencing. It doesn't say where to connect the output from the 3.5mm jack.

I think I hooked it up correctly, but my xcal3 just reads 13.8-14.0 no matter what. Even during idle when my actual Lm-1 reads 14.5-15.0.
 
I haven't used a 3.5mm jack. I've always used the round serial plug. But it sounds like you have a ground offset.

Are you using the cigar lighter plug? You may try running a ground wire from wherever you grounded the wires to the cigar lighter ground.
 
I thought the jack was to connect to the old style serial port on a computer so you can use the LM Programmer to customize the high/low afr end of the voltage spectrum.
You may have to program it. I think analog out 1 reads as a narrowband too.
 
justgod said:
I thought the jack was to connect to the old style serial port on a computer so you can use the LM Programmer to customize the high/low afr end of the voltage spectrum.
You may have to program it. I think analog out 1 reads as a narrowband too.
Click to expand...

Yep you are correct. I programmed it and it worked before.

I am looking for a no **** "this wire goes here" type explanation if anyone has it. From what I remember It's only 2 wires from the 3.5mm Jack ( a ground and output) and a couple from the firewire cable (analog and ground) but I'm not sure if the output is powered or what? I think I may have damaged the Lm-1 when I connected it to a power source.
 
Pretty sure I hooked it up right, after hooking it up wrong and frying the output port on my LM-1.

I Have the 3.5mm ground and the firewire ground connected and grounded.

I have an analog output wire on the 3.5mm connected to the an analog on the firewire. So two pairs of wires connected in total, with one pair being grounded.

Looks like I need to be looking for a new (old) lm-1 unit.
 
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