System Description

SystemDescriptionandInstallationManualforRangeFinder ICD10000‐01
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©SagetechCorporation2018ConfidentialProprietaryExportControlled Page56of130
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ACK’dMessageID
ByteOffset ByteName FieldDescription
01 AMTI AMTI ACK’dMessageID
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0x00
0x01
…
[00000000]
[00000001]
...
ACK’dMessageID
ContainstheMessageIDofthemessagebeingacknowledged.
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SystemStateByte
ByteOffset ByteName FieldDescription
02 SSB0 SSB0 SystemStateByteindicatescurrentRangeFinderStateInformation
 Bit0 RangeFinderFailFlag
1=anerrorwithintheRangeFinder.TheStatusmessagecanbequeriedto
determinethecauseoftheRangeFindererror.
Bit1 SystemFailFlag
1=anerrorwithintheRangeFindersysteminwhicharequiredinputfromthe
systemisnotavailable.TheStatusmessagecanbequeriedtodeterminethe
causeofthesystemfailure.
Bit2 TSOInvalidFlag
1=TSOisinvalid
Bit3 WeightonWheels
1=RangeFinderhasdetectedthattheWoWdiscreteinputisvalidinthe
Installationmessageandthediscreteistrue indicatingthattheaircraftweight
isonthewheels.
Bit4 MaintenanceMode
1=ON
Bit5 AltitudeSource
0=Integral
1=Fromhost
Bits6‐7 RangeFinderOperationalMode
00=STBY
01=ON
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PressureAltitude
ByteOffset ByteName FieldDescription
03 ALT0 ALT0 ALT1 ALT2 PressureAltitude
04 ALT1 0xFF
0x00
0x01
0xFB
0x00
0xEE
0x50
0x00
0xEC
‐1200ft
0ft
126,700ft
05 ALT2
 PressureAltitude
TheRangeFinderalwaysprovidesthecurrentaltitudefromthecurrentaltitudesourcehere.Thedata
isbarometricaltitudeinfeetwithreferencetoapressureof29.9213”Hg(101325Pascals)forzerofeet
indication.TheMSBissentfirst.
Thedataisa24‐bitsigned2'scomplementinteger,inunitsoffeet.Thevalue0x800000isusedto
indicateinvalidaltitude;allothe rvaluesreportedinthismessagearevalidaltitudes.
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