L
Leonard(Guest)
Guest
Support,
I've got the D10A connected to a Garmin GTX 327. Last night I performed some basic testing as follows:
1. Set D10A serial output to mode 4
2. Set Garmin input to ICARUS
...and nothing or so I thought. I played around with the barometric pressure to see whether the transponder pressure altitude would change. It didn't.
Today I found the following from a previous poster
The output will not change when you change the barometer. The EFIS output is a blind encoder, so it always outputs altituide at standard pressure (29.92). This is what transponders expect to see. The altitude is corrected back at the radar facility so that you don't cause a problem if you forget or mis-set your altimiter.
This would explain why my attempt were fruitless. Is so, then the question becomes: How do I test the communication between the D10A and the transponder on the ground?
Any help appreciated.
Leonard
I've got the D10A connected to a Garmin GTX 327. Last night I performed some basic testing as follows:
1. Set D10A serial output to mode 4
2. Set Garmin input to ICARUS
...and nothing or so I thought. I played around with the barometric pressure to see whether the transponder pressure altitude would change. It didn't.
Today I found the following from a previous poster
The output will not change when you change the barometer. The EFIS output is a blind encoder, so it always outputs altituide at standard pressure (29.92). This is what transponders expect to see. The altitude is corrected back at the radar facility so that you don't cause a problem if you forget or mis-set your altimiter.
This would explain why my attempt were fruitless. Is so, then the question becomes: How do I test the communication between the D10A and the transponder on the ground?
Any help appreciated.
Leonard