Aithre Shield config files

swatson999

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Joined
Oct 6, 2010
Messages
1,625
I have the Aithre Shield EX 2.0 CO detector installed (it works *great* by the way), and I see on their website there's a new set of parameters for the .sfg file...if these are polynomial coefficients, they're WAY different...so should I update the .sfg file to use the new values? I don't see any similar updates on the Dynon site, so this is confusing...

Thanks!

old:

low_coeff={c_x4=0
c_x3=0
c_x2=0
c_x1=77.2727272727273
c_x0=0}
New:
{c_x4=0
c_x3=0
c_x2=0
c_x1=85.0538674493846
c_x0=-39.6606183916479}
 

djones

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Staff member
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Jul 19, 2010
Messages
276
Well, there were lots of users who didn't have enhanced GP inputs available, so I worked it up with a 10K pull up so it can now be used on
any available input, enhanced or otherwise.
 

swatson999

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Oct 6, 2010
Messages
1,625
So I'm not sure I understand...if it's on an enhanced GP input, which configuration should be used? The old one, the new one, or either? :)
 

djones

Administrator
Staff member
Joined
Jul 19, 2010
Messages
276
Either, the old config doesn't have the pull up resistor turned on. The new config turns on a 10K pull up resistor so it can be used on either the enhanced or regular GP inputs and the file compensates for the slight voltage shift from the pull up.
 

swatson999

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Joined
Oct 6, 2010
Messages
1,625
Awesome! Thanks for the info! I'll just leave it alone then.

BTW, this is a great little unit and integrates very easily into the SV system...very sensitive and beats the heck out of the big honkin' boxes from other vendors IMO!
 
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