Transponder Question (Bug?)

[jimbim]

Hello together,

I am wondering if the transponder works correctly. Unfortunately I was not able to find any documentation for that specific transponder panel in the IXEG.

What does the position 'AUTO' of knob #2 mean? Is it ON and TRANSMITTING using either Transponder 1 or 2 (automatically)?

If that is the case, the dataref 'sim/cockpit/radios/transponder_mode' would have the wrong state. It should be set to 2 and not to 1. From the specification, the transponder_mode dataref has four states: (off=0,stdby=1,on=2,test=3)
I would also prefer to have have this knob initialized to position 'STBY' or knob #1 in position 'OFF'. That avoids people (like me) Connection to VATSIM with a transmitting Transponder :-)

Everything else works great. If I turn knob #1 to 'OFF' the dataref gets 0. Knob#2 at position 'ON' sets it to 2.
OK, you could set the dataref to 3 during the test but I think none of the exitsing Network clients (VATSIM, IVAO, ...) supports this state.

Maybe I am totally wrong :-) Just a thought.

Greetings,
Sebastian

[dr_nerdrage]

Auto will start squawking mode C/switch to ON/set the dataref to 2 when airborne (aka the landing gear struts extend). 

[jimbim]

Thank you very much dr_nerdrage! 

Than another case where it works as designed :-)

 

Sebastian

[Rodeo]

Yes, the FlightFactor A350 and QPAC A320 have a similar "AUTO" transponder feature. For quite a while, BTW, the A350 had a bug (now fixed) where the transponder would always behave as though it were on AUTO, even when forcibly set to ON or STBY…

[Tom Stian]

As far as I know you can see if the transpoder is active when the display show ATC 1 or ATC 2, depending what you selected.

Screenshot when airborn.

Edited May 18, 2016 by Tom Stian