Hooking up a LM-1 and a automter a/f gauge. Quick question.
04-05-05, 07:58 PM
#1
Hooking up a LM-1 and a automter a/f gauge. Quick question.
This may not be in the correct forum, but I feel that I get more quality responses to my questions in this forum. That, and I don't feel that there realy is a correct place for my question. 
Anyways, I'm running the LM-1 for my wide band. The biggest pain is that its extremely large, and kinda hard to read when accelerating hard. So I've put it in my glove box. Now, what I was thinking was that I have a Autometer a/f gauge laying around from the days of my n/a Rx-7 days. And seeing as its hard to keep an eye on the a/f ratio while doing hard runs, I wanted to hook it upto my Autometer. The only problem I've having is that I don't know how many volts it runs off of. Is the guage a 0~5v or what? I just need to know this so I can setup my LM-1 correctly. Any help would be great. CJ
Anyways, I'm running the LM-1 for my wide band. The biggest pain is that its extremely large, and kinda hard to read when accelerating hard. So I've put it in my glove box. Now, what I was thinking was that I have a Autometer a/f gauge laying around from the days of my n/a Rx-7 days. And seeing as its hard to keep an eye on the a/f ratio while doing hard runs, I wanted to hook it upto my Autometer. The only problem I've having is that I don't know how many volts it runs off of. Is the guage a 0~5v or what? I just need to know this so I can setup my LM-1 correctly. Any help would be great. CJ
04-05-05, 08:19 PM
#2
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Check out this link:
http://hp.autometer.com/instruction_...tions/837j.pdf
On the last page of the instructions there is a voltage chart that shows at what voltage the various LEDs on the Autometer gauge light up. You need to program one of the LM-1 analog outputs to corespond to the volotages taht are listed on the Autometer instruction sheet. Once you have your voltage curve programmed into the LM-1 and you connect the analog output wire to the gauge the lights will work properly. The Autometer gauge is basically a 0-1V gauge, but you can make it work since the LM-1 allows you to program the output voltage to whatever you need.
Andrew
http://hp.autometer.com/instruction_...tions/837j.pdf
On the last page of the instructions there is a voltage chart that shows at what voltage the various LEDs on the Autometer gauge light up. You need to program one of the LM-1 analog outputs to corespond to the volotages taht are listed on the Autometer instruction sheet. Once you have your voltage curve programmed into the LM-1 and you connect the analog output wire to the gauge the lights will work properly. The Autometer gauge is basically a 0-1V gauge, but you can make it work since the LM-1 allows you to program the output voltage to whatever you need.
Andrew
04-06-05, 09:49 AM
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Originally Posted by pp13bnos
Thats exactly what I wanted to know. Thanks! CJ
Andrew
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04-07-05, 03:55 AM
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Wow, kick *** idea. Can you post the output setup for us other people? I have an LM-1 and LMA-3, however with only one person in the car (myself) all i can do also is datalog
04-11-05, 05:03 PM
#10
I had a chance to test it on Sunday. I'm honestly very happy with it. Something I wish I would have done along time ago. I am going to adjust the voltage a bit....going to run 0v=15 a/f and 1v=11 a/f. This way under WOT, the guage should read full green. And if it does'nt, its time to back off of it. CJ
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