I've got a couple of questions concerning the proper configuration settings on the Main RS232 Setup Page of the IFD440. I just replaced my #1 Garmin 430 non-WAAS with an IFD440 in my SR22. For additional background, I have a newly-installed ACK A-30.9 blind encoder, installed for compatibility with my L3 9000+ transponder that a few months ago replaced the non-ADS-B compliant Garmin 327. Previously, on the Garmin 430's Main RS232 Config setup page, the Channel 1 input was set to "Icarus-Alt" and output to"Aviation."
Here's my first question: Are the following settings correct? I plan to set the IFD440's RS232 Channel 1 output to "Off"(instead of "Aviation") since I no longer have the Garmin 327 installed, and since the L3 9000+ has its own direct connection with the A-30 encoder. I plan to set Channel 1 input to "Icarus-alt" as it was with the Garmin 430, on the theory that the IFD440 has use for the blind encoder input, perhaps for automatic leg sequencing as discussed on p42 on the install manual. (I ask primarily because nowhere in the install manual or pilot's guide that I could find is there a reference to the IFD440's need for this channel input.)
Second question: I have an Airtex ME406 installed (with which the IFD440 is compatible, per p41). On p191 of the IFD install manual, the wiring diagram shows a connection between the IFD's RS232 Channel 2 Out and the ME406 ELT Input. Yet I see no option for setting this connection up on the Main RS232 Config setup instructions for channel outputs on p93-94 of the install manual. Consequently, I have no RS232 channel output set to the ME406 as a result. Of the choices for Channel outputs listed on p93-94, is there one that should be selected to ensure the IFD440 RS232 output is connected to the input on the ME406, as depicted on the wiring diagram on p191?
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