Hi Steve,
I'm at a loss to know how to make the required setting for SIL and SDA. There is no mention in the installation and operation manual for the Becker BXP6401-2 transponder which we have in our EV97A.
I emailed Harry Mendlessohn technical dept. where we purchased it and they haven't been able to elicit any info from Becker. HM weren't aware any settings needed to be changed on these units.
Some different makes seem to apply these settings automatically, perhaps the same for Becker. Do you have any information on how to achieve these settings, or do you know of anyone who can help?
Sorry for misusing PAW forum in this way but didn't know how to contact you otherwise. Any reply you give might in any case, assist other PAW users.
Hi Moffrestorer,
You are correct. The Trig, Funke and Garrecht Mode S ES transponders set SIL/SDA/etc correctly for an uncertified GPS if fed with NMEA0183 data.
I am afraid I don't know about the Becker transponders. I would suggest contacting Becker directly yourself.
I did do a bit of googling and found this:
http://www.becker-avionics.com/download/Manuals%20and%20Specifications/BXP%206400_Family/BXP6401-X-(XX)%20Installation%20and%20Operation%20Issue3-ads-b.pdfDon't know if you have read that doc but it does seem promising. In particular it says:
B. The equipment is capable to operate with following certified GPS receivers:
- FreeFlight System GPS/WAAS 1201 Sensor, part number 84100-02-XXXX
- NexNav miniGNSS/ GPS-SBAS Sensor/ Receiver.
The equipment is capable to operate with following non-certified GPS receivers:
- Garmin GNS 430
- Garmin GNS 530
The equipment is also capable to operate with GPS receivers which provide
EIA-232C or EIA-422 interface with serial asynchronous transmission parameters:
4800, n, 8, 1 and transmit data with NMEA-0183 protocol GGA and VTG
sentences.
The fact that it is even discussing "non-certified" GPS and NMEA I would take as very hopeful.
If your setup menu allows you to specify the type of connected GPS then there is a strong probability that is what dictates the SIL/SDA settings.
With an ADS-B diagnostic capability such as that which I posted about in the first post on this thread you would be able to see what effect the settings had.
Without that you will need to get confirmation from Becker I think.
I hope that helps. Do let me know how you get on. I suspect you will find it can be made to work.
However, I would also check the firmware levels (latest vs. the one in your transponder).
These sort of things (control over settings) can change from one firmware version to the next.
I am currently seeking confirmation on required firmware for uncert ADS-B Out with Trig.
Regards,
Steve