Instruction Manual

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GNAV540Use
7430‐0808‐01Rev.B
rManual Page85
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Chapter10. ProgrammingGuidelines
TheadvancedcommandsallowuserstoprogrammaticallychangetheGNAV540settings.Thissectionofthemanual
documentsallofthesettingsandoptionscontainedundertheUnitConfigurationtabwithinNAV‐VIEW2.2.Using
theseadvancedcommands,thesettingsofaGNAV540unitcanbemodifiedwithoutNAV‐VIEW2.2.
ConfigurationFields
Configurationfieldsdeterminevariousbehaviorsoftheunitthatcanbemodifiedbytheuser.Theseincludesettings
likebaudrate,packetoutputrateandtype,algorithmtype,etc.ThesefieldsarestoredinEEPROMandloadedon
powerup.ThesefieldscanbereadfromtheEEPROMusingtheRFcommand.Thesefieldscanbewrittentothe
EEPROMaffectingthedefaultpowerupbehaviorusingtheWFcommand.
Thecurrentvalueofthesefields(whichmaybedifferentfromthevaluestoredintheEEPROM)canalsobeaccessed
usingtheGFcommand.Allofthesefieldscanalsobemodifiedimmediatelyforthedurationofthecurrentpower
cycleusingtheSFcommand.TheunitwillalwayspowerupintheconfigurationstoredintheEEPROM.
Configurationfieldscanonlybesetorwrittenwithvaliddatafrom
Table55below.
Table55ConfigurationFields
index Configurationfields FieldID ValidValues Description
1 packetratedivider 0x0001
0,1,2,4,
20,25,
5,10,
50
quiet,100Hz,50Hz,25Hz,20
4Hz,2Hz
Hz,10Hz,5Hz,
2 SerialPortABAUDrate 0x0002 0,1,2,3 9600,19200,38400,57600
3 Continuouspackettype 0x0003
Anyoutput
ackettype
p
Notalloutputpacketsavailableforall
products.Seedetailedfielddescriptions
.
below
4 Reserved 0x0004  N/A
5 Reserved 0x0005  N/A
6 Reserved 0x0006  N/A
7 Orientation 0x0007 Seebelow
Determin anddow
facingsid
eforward,rightward, nward
es
8 UserBehaviorSwitches 0x0008 Any RefertoUserBehaviorSwitches,page88
9 XHardIronBias 0x0009 Any I2scaledfrom(‐1,1)
10 YHardIronBias 0x000A Any I2scaledfrom(‐1,1)
11 SoftIronScaleRatio 0x000B Any U2scaledfrom(0,2)
12 HeadingTrackOffset 0x000C Any
Heading‐TrackOffsettouseinNAVfiltertrack
updatemode.
13 TurnSwitchThreshold 0x000D
73‐65535
. ‐3 0°/s)
(0 4 6
Setsyawrateabovewhichtiltfeedbackis
attenuated.
14

ngle
SoftIronA
0x000E
(‐ππ)
Angleofmajoraxisoftheellipsegeneratedby
60degreeswinginradian
3
15 reserved 0x000F  
16 hardwareStatusEnable 0x0010 Any Bitmaskofenabledhardwarestatussignals