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Length

Scale

Type

6.4

6.4.1

Type

Scale

Length

Bits 1-8 contain the ARINC label known as the Information Identifier. The

label is expressed as a 3 digit octal number with receivers programmed to

accept up to 255 labels. The label's Most Significant Bit resides in the

ARINC word's Least Significant Bit location.

The number of bits used to represent the data word (see also ch. 6.4).

The scale factor used to decode the data word (see also ch. 6.4).

Identifies the way the data is encoded (see also ch. 6.4).

IMPORTANT

For the plugin to work correctly, all parameters must be filled. If one

parameter is missing, the Q.Station will show an error in the #actual.sta

file.

Click on Send to update the plugin configuration on the Q.station.

ARINC 429 data types

BNR or "bnr" decoding is a common ARINC data format. This type of

decoding simply interpreters the data as a binary number. Figure 6-1

shows the general BNR format.

Bit 29 is utilized as the sign bit with a 1 indicating a negative number (or

South, West, Left, From or Below). Bit 28 is then the data's Most Significant

Bit (MSB), or ½ of the maximum value of the defined parameters scale

factor. Bit 27 is ½ the value of Bit 28 or ¼ of the scale factor. Bit 26 is ½ the

value of Bit 27 or 1/8 the scale factor and so on.

Figure 6-1 BNR Word Format

Set to bnr to decode ARINC words in binary format.

Specify the scale factor (or range) for binary data decoding. The numeric

value is obtained by multiplying the scale factor by the ratio indicated by

each successive bit and adding them together.

Specify the number of bits used to represent the data (excl. sign bit).

Version no. 1.0

Released February 12, 2018