Instruction Manual

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GNAV540UserManual
7430‐0808‐01Rev.B
Page105
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hardwareStatusField
ThehardwareStatusfieldcontainsflagsthatindicatevariousinternalhardwareconditionsandalertsthatarenot
errorsorproblems.ThehardwareStatusflagintheBITstatusfieldisthebit‐wiseORofthelogicalANDofthe
hardwareStatusfieldandthehardwareStatusEnablefield.ThehardwareStatusEnablefieldisabitmaskthat
enablesselectingitemsofinterestthatwilllogicallyflowuptothemasterStatusflag.
Table89hardwareStatusField
hardwareStatusField Bits Values
unlocked1PPS 0 0=notasserted,1=asserted
unlockedInternalGPS 1 0=notasserted,1=asserted
noDGPS 2 0=DGPSlock,1=noDGPS
unlockedEEPROM 3
0=loc
enab
ked,WEdisabled,1=unlocked,WE
led
Reserved 4:15 N/A
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comStatusField
ThecomStatusfieldcontainsflagsthatindicatevariousexternalcommunicationconditionsandalertsthatarenot
errorsorproblems.ThecomStatusflagintheBITstatusfieldisthebit‐wiseORofthelogicalANDofthecomStatus
fieldandthecomStatusEnablefield.ThecomStatusEnablefieldisabitmaskthatenablesselectingitemsofinterest
thatwilllogicallyflowuptothemasterStatusflag.
Table90comStatusField
comStatusField Bits Values
noExternalGPS 0 0=externalGPSdataisbeingreceive
oexternalGPSdataisavailable
d
1=n
Reserved 1:15 N/A
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SoftwareStatusField
ThesoftwareStatusfieldcontainsflagsthatindicatevarioussoftwareconditionsandalertsthatarenoterrorsor
problems.ThesoftwareStatusflagintheBITstatusfieldisthebit‐wiseORofthelogicalANDofthesoftwareStatus
fieldandthesoftwareStatusEnablefield.ThesoftwareStatusEnablefieldisabitmaskthatenablesselectingitemsof
interestthatwilllogicallyflowuptothemasterStatusflag.
Table91softwareStatusField
softwareStatusField Bits Values
algorithmInit 0
0=normal,1=thealgorithmisinini
mode
tialization
highGain 1 0=lowgainmode,1highgainmode
attitudeOnlyAlgorithm 2
0=navigationstatetracking,1=attitudeonly
statetracking