Autopilot adapter for a Sandel 3308 interfacing with. Brittain B-11

[Gary0747]

Anybody know or have experience interfacing the Sandel 3308 heading and course outputs with a Brittain B-11 Accutrack?    It is already interfaced for Nav inputs and works great. To track a heading bug from the Sandel it appears to only need a simple DC adapter to convert the course vs heading deviation in order to input to the Brittain B-11.   Brittain and others appear to make a variety of DC adapters but we are looking for one that will interface.   Looks like I won’t be doing Truetrack now so upgrading my very reliable Brittain is maybe my best option. 

[Yetti]

There is the A and B channel in the Accutrac.   Both channels have left and right input that take output from a King CDI or a heading bug.    I think the output voltages are the same between Sandel and Bendix king heading bugs.   Do you have the pin out diagram for the Sandel?

[Yetti]

King 208 209 docs

KI208A-209A.pdf KI209A_Maintenance.pdf KI208209.pdf

[Bob Weber]

The Sandel is programmable to emulate many types of HDG sources.

[Yetti]

Can it do ARINC standards?

Section 2 of this manual is the keys to the kingdom

 

Manual No. 11990-1 Mooney Navigation Coupler Operation and Service Instructions.pdf

[Gary0747]

I have the 3308 install manual and there are DC voltage outputs for the heading bug and for the airplane course.    I also see in the set up pages that the 3308 can emulate a number of HSI units.  I think The Accutrack requires a voltage that is the deviation between heading and course.  I assume an autopilot adapter is needed to calculate this difference, and output it as a DC voltage.  It would seem to be a simple DC analog summer circuit.     I did not see anything like this in the 3308 manual.  Brittain did make some autopilot adapters like the BI-400 but I have found little info on it.