PilotAware
British Forum => Technical Support => Topic started by: matthew brumby on October 23, 2019, 08:04:56 pm
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I’ve seen some post for connecting paw to the Becker but I think most have used a serial encoder and ground pin 2 in the p9 plug I have a parallel encoder plugged into p9 and pin 2 is a encoder line for me anyone got this working yet with the output results to show it working
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Hi Mathew,
Take a look at this thread...
http://forum.pilotaware.com/index.php/topic,1209.msg14234.html#msg14234
Chris (Moffrestorer) managed to do this successfully, though it seems to be subject to how old (in both hardware and firmware terms) your transponder is. There are also several other posts about this on the Forum - you can find the full list by searching ‘Becker’ (without the inverted commas) from the Forum Home Screen. (Searching from anywhere else won’t bring up the full list).
Hope this helps.
Regards
Peter
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I’ve seen the posts thanks my transponder is new this year serial number good and software good I think the ones that have posted are using a serial encoder looking at the wiring pin outs they are saying to use I’m using a parallel encoder I will contact Becker tomorrow when there technical is back in thanks
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If the output from your encoder is parallel only then, you will need to convert parallel to serial before sending it to the USB lead.
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@IanMelville,
I’m confused ???
The data to the Transponder goes from the PAW USB to serial RS232 via the converter, not the other way round. So does Mathew need to convert USB to parallel - and is this even possible? Sorry Mathew, this isn’t something I’ve ever looked into before, so guess I’d need to read up on it. Unless someone else on here can help.
Regards
Peter
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According to Becker schematic I just connect the 232 to pins 8 and 9 in the p9 connector
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Pete, you are not confused, as I have it arse about face. :-[
I don’t have the Becker manual to hand and will need to look it up before I understand. What is the encoder model?
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My blind encoder connected to the Becker bxp6401 is an ak 350 ameri king I tried to upload the schematic but file to big from my phone in the Becker manual 03 issue 05 page 40
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Ok, a quick look shows the Becker Blind encoder connects to connector J8, not J9. Will need to look up the Ameri King.
I assume mode C altitude did work before?
Will look later. Bit difficult on phone.
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this is the diagram Im using as im using a parallel encoder p9 pins 8 and 9 and j2 pin 2 ground
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sorry this is the schematic other one is for a serial encoder attached to j8
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Hi Guys,
Looking at the two diagrams, it appears to me that the GPS source is connected to the same pins on P9, whether you are using a serial or a parallel altimeter encoder with your transponder. If I am correct, I would expect it to work using the FTDI USB to serial RS232 converter cable connected as per Chris’s earlier thread which I linked to above - even with a parallel altitude encoder connected to P9.
Caveat - I’m not at home at present, just looking at this on my iPad without the benefit of the full Becker manuals and my knowledge here is limited. If in any doubt I would advise checking with Becker’s technical people first. Transponders are very expensive to repair if you damage them!
Please keep us informed on progress.
Best Regards
Peter
n.b. edited to correct connector reference from J8 to P9
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But the second diagram shows gps connected to p9 and pin 2 on j8 grounded to enable the gps
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Hi Matthew,
I think I see your confusion here.
If you are using a parallel encoding altimeter Plug 9 pin 2 isn’t available for “GPS Enable” function as it’s used as a data line. So you must ground Jack 8 pin 2 instead.
In Section 2.6 “Settings after Installation” of the Becker Manual, you must select, through the menu function, the type of Encoding altimeter being used. If you select “Parallel”, which is the default, the data line P9 pin2 is presumably reconfigured away from its use as GPS enable to altimeter data functionality. It would probably be a good idea to confirm this with Becker Support, first!
NB. I used Issue 4 of the manual dated June 2016, I see you have issue 5.
Thx,
Chris
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Yes I’m using issue 5 and I’m sure I have to select parallel in the ins on the Becker with the 232 connected to pin 8and 9 if I configure the usb to gps I get failure on the Becker but if I select trig it’s fine but I haven’t been able to test if this is working correctly as I don’t have another spare pilot aware to check while I’m out Flying I am speaking to gerhard from Becker tomorrow so hope he shines more light on this thanks for your input
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OK, Had a look at the diagrams now. V5 of the Becker manual diagram 2.8.1 is how it should be wired. Moffrestorer has said the same
P9, Pin 2 has nothing to do with GPS if a parallel encoder is used and is your GPS data in
Use connector J8 pin2 for GPS/EN, if a parallel altimeter is connected.
J8, Pin 2 should be grounded to enable GPS
P9, Pin 1 goes to A1
P9, Pin 2 goes to A2
P9, Pin 3 goes to A4
P9, Pin 8 goes to RS232 data in from PAW(GPS)
P9, Pin 14 goes to B1
P9, Pin 15 goes to B2
P9, Pin 16 goes to B4
P9, Pin 17 goes to C1
P9, Pin 18 goes to C2
P9, Pin 19 goes to C4
P9, Pin 20 goes to D4
P9, Pin 11 goes to 10-33V DC supply
P9, Pin 12 goes to 10-33V DC supply
P9, Pin 13 goes to Ground
P9, Pin 25 goes to Ground
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A couple of minor errors above, Ian - surely it should read...
J8 pin 2 should be grounded to enable GPS. (When using a parallel altitude encoder.)
Also P9, pin 12 can’t be both 10-33V DC Supply and Ground - the second one should be P9, pin 13.
From Chris’s previous final report, if using the FTDI lead it should be wired as follows...
Once I’d configured the correct USB port that the FDTI cable is plugged into the red transmit LED in the converter started flashing approx once per second. With ADS-B Enable (P9-2) grounded the transponder still indicated “Failure”. This was sorted by reversing the cable connections as suggested by Peter and Ian, so Orange wire to P9-9, black to P9-8. Grounded P9-13, P9-25.
I got “failure” with the port configuration selected to “Trig” but it was OK with it configured to “Funke”.
This should produce a positive result.
Regards all
Peter
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Thanks Pete, The danger of copy and paste late at night. Post now correted.
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I’ve now got it all installed and just need the weather to try it hopefully tomorrow weather permitting if not Sunday is anyone near Sturgate with a pilot aware to check the traffic to find me on it so I can check for the adsb output thanks
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I’ve now got it all installed and just need the weather to try it hopefully tomorrow weather permitting if not Sunday is anyone near Sturgate with a pilot aware to check the traffic to find me on it so I can check for the adsb output thanks
Do you just want to check your emitting, or the SIL values etc
Thx
Lee
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Also just to say you need to connect a switch to j8 pin 2 so you can disable in case you are testing other things in the hangar etc in case you don’t get gps in your hangar or the transponder will return failure I need to get a print out of someone’s traffic near me for caa mod 7 application thanks
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Well done Matthew,
Glad to hear you have got things sorted. Sorry I can’t help with the testing. I am based up at East Fortune, but am away up the west coast of Scotland (by car) this weekend. Hopefully you will find someone local to capture your test shot.
Best Regards
Peter
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Thanks peter
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now all working adsb out