Avionics Databus Specialist YED - an Avionics Databus Specialist Company

ARINC 429 to NMEA0183

(RS232/RS422)

Part Number: YED/429-R1/Serial-T1

NATO Stock Number : 5895-99-353-0795

This ARINC 429 to NMEA0183 converter is in use by many companies who have a requirement to extract navigational data from an ARINC 429 data bus and translate it onto an RS232 or RS422 serial data bus. The exact format for the converted data is NMEA0183 - a marine GPS ASCII format. The labels to be converted should be specified by you when requesting a quote.

 
     
  PRODUCT SPECIFICATION:

Power:
18-36VDC (Optionally 15-72VDC).
28 VDC @ 30mA.
Reverse polarity protected.
Thermally protected -102șC fuse.

Bus:
ARINC 429 input with automatic High/Low bit
     detection.
Up to 256 Label reception capability.
ARINC 429 opto-coupled inputs
RS232/422 output: 4,800 baud, 8-bit, 1-Stop bit, no
     Parity

Dimensions:
Length including flanges: 140.0 mm
Length excluding flanges: 114.0 mm
Width: 64.0 mm
Height: 30.0 mm

Weight:
Approx. 300 grams.
 

The typical labels processed by this converter are shown in the table below. The ARINC 429 to NMEA0183 converter adapts automatically to high or low speed (12.5/100kHz) ARINC 429 data and the inputs are opto-coupled for electrical isolation purposes. The ARINC 429 to NMEA0183 converter is powered from an external 28 VDC (18-36V (optionally 15-72VDC)) nominal supply with internal current and thermal (102 șC) fuse. The inputs are also reverse polarity protected.

ARINC 429 Labels Configured :-

ARINC 429 Label Description of Label Format
125   UTC (GMT) BCD
147   Magnetic Variation BNR
260   Date BCD
310   Latitude BNR
311   Longitude BNR
312   Ground Speed BNR
314   True Heading BNR
203   Altitude BNR

The output data is in the form of RS232 or RS422 (NOT both) serial data transmitted at a rate of 4800 baud. The output string is in ASCII and conforms to NMEA0183 data standard. Examples of the output are shown below:

    EqID.  HHMMSS V LATITUDE    LONGITUDE   G.Spd  Hding DATE   Brg  CHKSUM
    $GPRMC,173200,A,0051.4160,N,0051.2924,W,200.0,360.0,230997,128.7,W*72
    EqID         Alt(Meters)    CHKSUM
    $GPGGA,,,,,,,,,00099.5,M,,M,,*1D
 

    $GPRMC,173200,A,0051.4160,N,0051.2924,W,200.0,360.0,230997,128.7,W*72
    $GPGGA,,,,,,,,,00099.5,M,,M,,*1D
    $GPRMC,173200,A,0051.4160,N,0051.2924,W,200.0,360.0,230997,128.7,W*72
    $GPGGA,,,,,,,,,00099.5,M,,M,,*1D
    $GPRMC,173200,A,0051.4160,N,0051.2924,W,200.0,360.0,230997,128.7,W*72
    $GPGGA,,,,,,,,,00099.5,M,,M,,*1D
    $GPRMC,173200,A,0051.4160,N,0051.2924,W,200.0,360.0,230997,128.7,W*72
    $GPGGA,,,,,,,,,00099.5,M,,M,,*1D
    $GPRMC,,,,,,,,,,,*67      - Occurs when no ARINC data received
    $GPGGA,,,,,,,,,,M,,M,,*2F - Occurs when no ARINC data received

  • Each line begins with a '$' and ends with a CR LF (0DH, 0AH) characters.
  • The ',' comma delimiters are used to separate each particular field.
    i.e. Third field is Latitude, fourth field is 'N' or 'S' indicator, etc.
  • Each line is transmitted at 4800-Baud Rate and at a repetition of one line per second.

The connections for the YED/429-R1/Serial-T1 Adapter are via a D9 filtered plug as follows:

Signal Name PIN #
  +28 Volts DC (18-36V) 1
  0 Volts (GND) 2
  ARINC 429 I/P +ve 3
  ARINC 429 I/P -ve 4
  RESERVED 5
  RS422 O/P +ve 6
  RS422 O/P -ve 7
  RS232/RS422 Ground 8
  RS232 O/P 9

 

Click here to Download the User Manual in Acrobat format (Zipped 119kB)
[PASSWORD PROTECTED - To request password click here.]
 

All units are designed to meet the European and US EMC regulations.

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Last Updated: 02 February, 2008 04:38 PM