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GBAS/SCAT-I Mode (Options R&S
EVSG-K4/-K5)
R&S
®
EVSF1000
137
User Manual 1178.6410.02 ─ 05
...00001001111000000111 1 0 1 1 0 0 0 1 1
<Element>
<data_content>ABC_XYZ</data_content>
<data_content_short>ABC</data_content_short>
<bits_used>4</bits_used>
<type>value</type>
</Element>
...0000100111100000 0 1 1 1 0 1 1 0
<Element>
<data_content>KLMO</data_content>
<data_content_short>KLM</data_content_short>
<bits_used>8</bits_used>
<type>value</type>
</Element>
.
.
.
End
XML file
XML file
<
Element
>
<
data_content
>
Fill Bits
</
data_content
>
<
data_content_short
>
FILL_BITS
</
data_content_short
>
<
type
>
fill
</
type
>
</
Element
>
</
Gbas
>
bitstream
parser
bitstream
parser
bitstream
parser
Interpretation
Step 1
Step 2
Step n
Output in Message view table
Interpretation
XML file
8.6.2
Output Elements and Control Elements
Different types of elements are supported to interpret all existing values in a GBAS
burst. However, the types are generic and can be configured to handle other values, as
well.
Many elements simply convert a binary value in the bitstream to human-readable out-
put for the "Message" view table. Conversion in this case can consist of various differ-
ent instructions, such as:
●
Comparing bitstrings and providing a check result
●
Converting binary values to decimal values
●
Converting binary values to text descriptions
For different instructions, you must define different element types.
Message XML Interface