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encoding altimeter pinout?



 
 
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  #1  
Old July 14th 04, 12:09 AM
Bill Chernoff
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Default encoding altimeter pinout?

Hi Everyone,

I have an Aero Mechanism 8140B-20 Altimeter/Encoder. Does anyone happen to
have a pinout for this model? Or any ideas on where to find one? The google
search turned up an Aero Mechanism CNC, but they are not the right guys.

tia

Bill



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  #2  
Old July 15th 04, 05:16 AM
Icebound
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"Bill Chernoff" wrote in message
news:[email protected]
Hi Everyone,

I have an Aero Mechanism 8140B-20 Altimeter/Encoder. Does anyone happen

to
have a pinout for this model? Or any ideas on where to find one? The

google
search turned up an Aero Mechanism CNC, but they are not the right guys.

tia

Bill




Did you find this list?
http://www.horizonaero.com/PDF%20Dow...Pubs-Index.pdf

The overhaul manual for that unit is in there. I don't know if that
necessarily means that they supply info from it...





  #3  
Old July 15th 04, 02:32 PM
Pete
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Try the rocky mountain encoder site....

http://www.rkymtn.com/einstall.pdf

Cheers,
Pete
Europa with both short and long wings

"Bill Chernoff" wrote in message
news:[email protected]
Hi Everyone,

I have an Aero Mechanism 8140B-20 Altimeter/Encoder. Does anyone happen

to
have a pinout for this model? Or any ideas on where to find one? The

google
search turned up an Aero Mechanism CNC, but they are not the right guys.

tia

Bill





  #4  
Old July 15th 04, 04:34 PM
Bill Hale
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Posts: n/a
Default

"Bill Chernoff" wrote in message news:[email protected]
Hi Everyone,

I have an Aero Mechanism 8140B-20 Altimeter/Encoder. Does anyone happen to
have a pinout for this model? Or any ideas on where to find one? The google
search turned up an Aero Mechanism CNC, but they are not the right guys.

tia

Bill


Reverse Engineering Aeromechanism 8040 type Bendix connections

A+ R

Gnd H

A1 L
A2 K
A4 A

B1 J
B2 B
B4 F

C1 C
C2 E
C4 D

Gnd P

Jumper M-N

These come from a harness diagram for a
14 v airplane that did once work.

It might be that there is a D output... for you high
flyers. There is one pin, G, unaccounted for on the list
above. I'm not sure all Aeromechanisms would have this.

I believe that one of the grounds is a ground for the LEDs
and one is for the output phototransistors.

I think the jumper from M-N adjusts the current for 14v.
I'd guess that you would leave it out for 28v. You could
measure between them and see if it was a few hundred ohms...
that would confirm the theory.

That's the best I can do. Bill Hale
 




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