System Description

System Description and Installation Manual for MXS ICD10004-01
© Sagetech Corporation 2018 Confidential Proprietary Export-Controlled Page 108 of 160
SV Quality – SIL
SV Quality – SIL Supplement
SV Quality – System Design Assurance
Byte Offset
Byte Name Field Description
29
SL0
Byte Bit SV Quality - SIL
SL0 5-7
4
3
2
1
0
Reserved
System Design Assurance
System Design Assurance
SIL Supplement
SIL
SIL
SV Quality – System Design Assurance The System Design Assurance field defines the failure condition that the position
transmission chain is able to support. See the table below for SDA format:
Bit 4 Bit 3 Supported Failure Condition
Probability of undetected fault causing transmission of
false information
0
0
1
1
0
1
0
1
Unknown/No safety effect
Minor
Major
Hazardous
>1x10
-3
per flight hour or unknown
≤ 1x10
-3
per flight hour
≤ 1x10
-5
per flight hour
≤ 1x10
-7
per flight hour
SV Quality – SIL Supplement
The Source Integrity Level Supplement provides whether the SIL probability is based upon a per sample or per hour
probability of exceeding the radius of containment. If bit 2 is set to “ONE” then the probability of exceeding the radius of
containment is based upon “per sample”. If bit 2 is set to “ZERO” then the probability of exceeding the radius of
containment is based upon “per hour”.
SV Quality – SIL The Source Integrity Level provides the probability of the ADS-B participant exceeding the radius of
containment specified by the NIC field.
Bit 1 Bit 0 Probability of Exceeding the NIC Containment Radius (Rc)
0
0
1
1
0
1
0
1
Unknown or > 1x10
-3
per flight hour or per sample
≤ 1x10
-3
per flight hour or per sample
≤ 1x10
-5
per flight hour or per sample
≤ 1x10
-7
per flight hour or per sample