System Description

SystemDescriptionandInstallationManualforRangeFinder ICD10000‐01

©SagetechCorporation2018ConfidentialProprietaryExportControlled Page112of130

8.4.13 ModeSInterrogationR esponseMessages:Type0xA4
The Mode S Interrogation Response Message is transmitted from Range Finder in response to a Mode S
interrogationcommandmessage.IftheRangeFinderisabletoperformtherequestedinterrogation,thenthis
messagecontainsthedatastoredinmemoryfromthelastvalidreplytointerrogation.
TheModeSInterrogation
ResponseMessagedatastructureoverviewisshowninTable8‐73.
TheModeSInterrogationResponseMessagedatastructureisdetailedinTable8‐74.
AModeSInterrogationMessageexampleisshowninTable8‐75.
Table8‐73ModeSInterrogationResponsePayloadStructureOverview
PayloadIndex MessageField Numberbytes
00 DownlinkFormat 1
01 Altitude 2
02 Latitude 3
05 Longitude 3
08 SurveillanceStatus 1
09 Range 2

Table8‐74ModeSInterrogationResponseMessagePayloadStructureDetail
DownlinkFormat
ByteOffset ByteName FieldDescription
00 DF0 DFO DownlinkFormat
 0x00–0x0F
0x10
0x11–0xFF
Reserved
DF16
Reserved
DownlinkFormat(DF)ofthereceivedmessage
