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RS422 - RS232

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jimbean6(at)optimum.net
Guest

Posted: Mon Nov 10, 2014 4:10 pm Post subject: RS422 - RS232

In starting to think about ADS-B one way to get out only would be a 

Mode-S transponder hooked to the existing Garmin 432W. The 432 speaks 

RS232 and the transponder slide in replacement speaks RS422. There are 

converters available for under 20 bucks. Is it that simple?



Jim Bean

nuckolls.bob(at)aeroelect
Guest

Posted: Mon Nov 10, 2014 5:01 pm Post subject: RS422 - RS232

At 18:09 2014-11-10, you wrote:

 	  Quote: 	
		  



In starting to think about ADS-B one way to get out only would be a 

Mode-S transponder hooked to the existing Garmin 432W. The 432 

speaks RS232 and the transponder slide in replacement speaks RS422. 

There are converters available for under 20 bucks. Is it that simple?


	


   Yeah pretty simple. I used to build them for

   some applications in Beech's Targets Division.

   Your best bet is just to buy one. See:



http://tinyurl.com/ly5hb9q

   Bob . . .

nuckolls.bob(at)aeroelect
Guest

Posted: Mon Nov 10, 2014 5:07 pm Post subject: RS422 - RS232

At 18:09 2014-11-10, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: James Bean <jimbean6(at)optimum.net>



 In starting to think about ADS-B one way to get out only would be a Mode-S transponder hooked to the existing Garmin 432W. The 432 speaks RS232 and the transponder slide in replacement speaks RS422. There are converters available for under 20 bucks. Is it that simple?  	


   If you want to build on, here's a schematic.



   



 



 

   Bob . . .    [quote][b]

user9253

Joined: 28 Mar 2008
Posts: 1944
Location: Riley TWP Michigan

Posted: Tue Nov 11, 2014 8:02 am Post subject: Re: RS422 - RS232

It is my understanding that a mode S transponder must have the EXTENDED SQUITTER feature to be ADS-B compliant in 2020.  The data contained in extended squitter transmissions tells the ground station what ADS-B hardware is installed in the aircraft.  If the hardware does not meet government regulations, the ground station will not transmit traffic and weather back to the aircraft after 2020.  And using hardware that is not certified might be in violation of FARs.  An avionics shop like Steinair should be consulted before spending time and money.

Joe

_________________
Joe Gores

henry(at)pericynthion.org
Guest

Posted: Tue Nov 11, 2014 12:46 pm Post subject: RS422 - RS232

That will convert the logic levels (physical layer) but are the protocols known to be compatible? i.e. does the 432W (I didn't realize there was such a thing) send messages in a format that the transponder can understand, even after converting to RS-232?



Henry

On Tue, Nov 11, 2014 at 1:06 AM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:

[quote]  At 18:09 2014-11-10, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: James Bean <jimbean6(at)optimum.net (jimbean6(at)optimum.net)>



 In starting to think about ADS-B one way to get out only would be a Mode-S transponder hooked to the existing Garmin 432W. The 432 speaks RS232 and the transponder slide in replacement speaks RS422. There are converters available for under 20 bucks. Is it that simple?  	


   If you want to build on, here's a schematic.



   



 



 

   Bob . . .     	  Quote: 	
		  



_blank">www.aeroelectric.com

.com" target="_blank">www.buildersbooks.com

="_blank">www.homebuilthelp.com

="_blank">www.mypilotstore.com

ank">www.mrrace.com

_blank">http://www.matronics.com/contribution

ist" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List

tp://forums.matronics.com



	




[b]

nuckolls.bob(at)aeroelect
Guest

Posted: Tue Nov 11, 2014 6:37 pm Post subject: RS422 - RS232

At 14:45 2014-11-11, you wrote:

 	  Quote: 	
		  That will convert the logic levels (physical layer) but are the 

protocols known to be compatible? i.e. does the 432W (I didn't 

realize there was such a thing) send messages in a format that the 

transponder can understand, even after converting to RS-232?


	




    232/422/etc ARE electrical/handshake standards . . . and

    do not describe data formats.



http://tinyurl.com/buupe



http://tinyurl.com/2twp68



    Most aviation serial data exchanges are at

    9600 bits/sec, 8 bit word, no parity, 1

    stop bit. This data framing is independent

    of the conduit carrying the data. 422 is

    often used as an "extender" for 232. 232

    is not suited for long runs between devices

    that might have large differences in ground

    potential (ground loop noises). 422 is twisted

    pair with much greater noise immunity. We had

    some equipment at Hawker/Beech where I converted

    232 to 422 and back to 232 some 100 feet away.



    Somewhere in my software cookie jar, I have a

    routine that looks at the serial data input port

    and measures the bit rate. You can squirt anything

    from 600 to 19,600 bits per second at it . . . and

    it will sync up and go to work. You still have to

    do the 8,N,1 thingy but bit rate is optional.



    You'll need to consult the installation manuals

    for the systems you wish to link . . . odds are

    they both speak 9600,8,N,1 but it's a good thing

    to check.

   Bob . . .

donjohnston

Joined: 13 Dec 2009
Posts: 232

Posted: Wed Nov 12, 2014 7:37 am Post subject: Re: RS422 - RS232

Arrrgh!



Grand Rapids charged me $200 for an RS-422 to RS-232 adapter.

jimbean6(at)optimum.net
Guest

Posted: Wed Nov 12, 2014 4:32 pm Post subject: RS422 - RS232

This seems to have generated some interest so I will expand.



I presently have a Becker atc4401 Mode A/C thansponder and a Garmin 430W 

gps/com/nav.

Don't know where 432W came from, sorry for the confusion.

The Becker bxp6401 Mode S ia a slide in replacement with an extra 

connector for the Mode S connection.

It is not in a rack so "slide in" means the same pin-outs on the main 

connector.

There is also a dongle that is programmed to provide the Mode S address.

It definitely has extended squitter. It also does Mode A and C.

Accord in to Garmin the 430W will operate with any capable Mode S 

transponder.

So this seems to be a viable solution, particularly if one already has 

the Becker Mode A/C.



Jim Bean



On Mon, Nov 10, 2014 at 07:09 PM, James Bean wrote:



			In starting to think about ADS-B one way to get out only would be a 

Mode-S transponder hooked to the existing Garmin 432W. The 432 speaks 

RS232 and the transponder slide in replacement speaks RS422. There are 

converters available for under 20 bucks. Is it that simple?



Jim Bean

peter(at)sportingaero.com
Guest

Posted: Sat Nov 15, 2014 3:28 am Post subject: RS422 - RS232

So the important question is what data format does the Becker require? 

One aspect is the protocol (in this case RS422), but equally important 

is what that input data represents. If it requires NMEA sentences you 

are probably in luck as the 430 almost certainly will output most of the 

common sentences, such as RMC and RMB (both required for full extended 

squitter). If some other data format is required it will probably get 

all too difficult.



Look carefully at the 6401 specification as somewhere it will state the 

required input data format.



Peter

On 13/11/2014 00:28, James Bean wrote:

 	  Quote: 	
		   

 <jimbean6(at)optimum.net>



 This seems to have generated some interest so I will expand.



 I presently have a Becker atc4401 Mode A/C thansponder and a Garmin 

 430W gps/com/nav.

 Don't know where 432W came from, sorry for the confusion.

 The Becker bxp6401 Mode S ia a slide in replacement with an extra 

 connector for the Mode S connection.

 It is not in a rack so "slide in" means the same pin-outs on the main 

 connector.

 There is also a dongle that is programmed to provide the Mode S address.

 It definitely has extended squitter. It also does Mode A and C.

 Accord in to Garmin the 430W will operate with any capable Mode S 

 transponder.

 So this seems to be a viable solution, particularly if one already has 

 the Becker Mode A/C.



 Jim Bean



 On Mon, Nov 10, 2014 at 07:09 PM, James Bean wrote:



             In starting to think about ADS-B one way to get out only 

 would be a Mode-S transponder hooked to the existing Garmin 432W. The 

 432 speaks RS232 and the transponder slide in replacement speaks 

 RS422. There are converters available for under 20 bucks. Is it that 

 simple?



 Jim Bean

peter(at)sportingaero.com
Guest

Posted: Sat Nov 15, 2014 3:53 am Post subject: RS422 - RS232

I found the installation manual on the web,



http://www.becker-avionics.com/download/Manuals%20and%20Specifications/BXP%206400_Family/BXP6401-X-(XX)%20Installation%20and%20Operation%20Issue3-ads-b.pdf 

<http://www.becker-avionics.com/download/Manuals%20and%20Specifications/BXP%206400_Family/BXP6401-X-%28XX%29%20Installation%20and%20Operation%20Issue3-ads-b.pdf>



The way I read it, a 430 hooked up by 232 will be adequate, interesting 

that a 430 & 530 are listed as non-certified GPS receivers!



There is also a reference to the data interface document.



Peter



On 15/11/2014 11:27, Peter Pengilly wrote:

 	  Quote: 	
		   

 <peter(at)sportingaero.com>



 So the important question is what data format does the Becker require? 

 One aspect is the protocol (in this case RS422), but equally important 

 is what that input data represents. If it requires NMEA sentences you 

 are probably in luck as the 430 almost certainly will output most of 

 the common sentences, such as RMC and RMB (both required for full 

 extended squitter). If some other data format is required it will 

 probably get all too difficult.



 Look carefully at the 6401 specification as somewhere it will state 

 the required input data format.



 Peter

 On 13/11/2014 00:28, James Bean wrote:

> 

> <jimbean6(at)optimum.net>

>

> This seems to have generated some interest so I will expand.

>

> I presently have a Becker atc4401 Mode A/C thansponder and a Garmin 

> 430W gps/com/nav.

> Don't know where 432W came from, sorry for the confusion.

> The Becker bxp6401 Mode S ia a slide in replacement with an extra 

> connector for the Mode S connection.

> It is not in a rack so "slide in" means the same pin-outs on the main 

> connector.

> There is also a dongle that is programmed to provide the Mode S address.

> It definitely has extended squitter. It also does Mode A and C.

> Accord in to Garmin the 430W will operate with any capable Mode S 

> transponder.

> So this seems to be a viable solution, particularly if one already 

> has the Becker Mode A/C.

>

> Jim Bean

>

> On Mon, Nov 10, 2014 at 07:09 PM, James Bean wrote:

>

>             In starting to think about ADS-B one way to get out only 

> would be a Mode-S transponder hooked to the existing Garmin 432W. The 

> 432 speaks RS232 and the transponder slide in replacement speaks 

> RS422. There are converters available for under 20 bucks. Is it that 

> simple?

>

> Jim Bean

nuckolls.bob(at)aeroelect
Guest

Posted: Sat Nov 15, 2014 6:58 am Post subject: RS422 - RS232

At 05:52 2014-11-15, you wrote:

 	  Quote: 	
		  

<peter(at)sportingaero.com>



I found the installation manual on the web,



http://www.becker-avionics.com/download/Manuals%20and%20Specifications/BXP%206400_Family/BXP6401-X-(XX)%20Installation%20and%20Operation%20Issue3-ads-b.pdf 

<http://www.becker-avionics.com/download/Manuals%20and%20Specifications/BXP%206400_Family/BXP6401-X-%28XX%29%20Installation%20and%20Operation%20Issue3-ads-b.pdf>


	


   Peter, thanks for posting the link. I've added this

   document to the installation data library

   on aeroelectric.com . . .



   Bob . . .

phudes(at)ix.netcom.com
Guest

Posted: Sat Nov 15, 2014 9:14 am Post subject: RS422 - RS232

I think that is because you need Waas receivers ( 430W & 530W).



Pete

On Nov 15, 2014, at 3:52 AM, Peter Pengilly wrote:



 	  Quote: 	
		   

 

 I found the installation manual on the web,

 

 http://www.becker-avionics.com/download/Manuals%20and%20Specifications/BXP%206400_Family/BXP6401-X-(XX)%20Installation%20and%20Operation%20Issue3-ads-b.pdf <http://www.becker-avionics.com/download/Manuals%20and%20Specifications/BXP%206400_Family/BXP6401-X-%28XX%29%20Installation%20and%20Operation%20Issue3-ads-b.pdf>

 

 The way I read it, a 430 hooked up by 232 will be adequate, interesting that a 430 & 530 are listed as non-certified GPS receivers!

 

 There is also a reference to the data interface document.

 

 Peter

 

 On 15/11/2014 11:27, Peter Pengilly wrote:

> 

> 

> So the important question is what data format does the Becker require? One aspect is the protocol (in this case RS422), but equally important is what that input data represents. If it requires NMEA sentences you are probably in luck as the 430 almost certainly will output most of the common sentences, such as RMC and RMB (both required for full extended squitter). If some other data format is required it will probably get all too difficult.

> 

> Look carefully at the 6401 specification as somewhere it will state the required input data format.

> 

> Peter

> 

> 

> On 13/11/2014 00:28, James Bean wrote:

>> 

>> 

>> This seems to have generated some interest so I will expand.

>> 

>> I presently have a Becker atc4401 Mode A/C thansponder and a Garmin 430W gps/com/nav.

>> Don't know where 432W came from, sorry for the confusion.

>> The Becker bxp6401 Mode S ia a slide in replacement with an extra connector for the Mode S connection.

>> It is not in a rack so "slide in" means the same pin-outs on the main connector.

>> There is also a dongle that is programmed to provide the Mode S address.

>> It definitely has extended squitter. It also does Mode A and C.

>> Accord in to Garmin the 430W will operate with any capable Mode S transponder.

>> So this seems to be a viable solution, particularly if one already has the Becker Mode A/C.

>> 

>> Jim Bean

>> 

>> On Mon, Nov 10, 2014 at 07:09 PM, James Bean wrote:

>> 

>>            In starting to think about ADS-B one way to get out only would be a Mode-S transponder hooked to the existing Garmin 432W. The 432 speaks RS232 and the transponder slide in replacement speaks RS422. There are converters available for under 20 bucks. Is it that simple?

>> 

>> Jim Bean

>> 

>> 

>> 

>> 

>> 

>> 

> 

> 

> 

> 

> 

>

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