Operating Instructions and Installation Instructions

ComNav Vector G2/G2B Installation & Operation Operation
Document PN 29010078 V2.0 - 54 -
DRAFT #3 – 29 May 2009
Command Action & Time Constant Affected Range (seconds)
$JATT,COGTAU,cogtau
$JTAU,COG,cogtau
Query or Set the Course-Over-Ground
Constant
cogtau = 0.0 to 200.0
$JATT,HTAU.htau Query or Set the Heading Constant htau = 0.0 to 3600.0
$JATT,HRTAU,hrtau Query or Set the Rate of Turn Constant hrtau = 0.0 to 3600.0
$JATT,PTAU,ptau Query or Set the Pitch (or Roll) Constant ptau = 0.0 to 3600.0
$JATT,SPDTAU,spdtau
$JTAU,SPEED,spdtau
Query or Set the Speed Constant spdtau = 0.0 to 200.0
$JSMOOTH,time Query or Set the Carrier Smoothing Time
time = SHORT ⇒ 300
time = LONG ⇒ 900
time = 15 to 6000
Table 13 – Commands for the Smoothing Time Constants
Note: see Smoothing Output Data with Time Constants on page 59
for full details of the TAU time constants.
Command Description
$JATT,GYROAID[,NO/YES] Query or Enable/Disable the Gyro-aiding feature
$JATT,HBIAS[,hbias]
• Query or Set Heading Output Offset
• hbias range is –180° to +180°
$JATT,LEVEL[,NO/YES]
Query or Set Level Mode Operation
• YES ⇒ Tilt less than 10°
$JATT,NEGTILT[,NO/YES]
Query or Set the Pitch/Roll sign convention
• NO ⇒ normal
• YES ⇒ reverse sign
$JATT,PBIAS[,pbias]
Query or Set the Pitch/Roll Output Offset
• pbias range is –15° to +15°
$JATT,ROLL[,NO/YES]
Query or Set the Pitch/Roll Orientation
• NO ⇒ Pitch
• YES ⇒ Roll
$JATT,T25CAL[,NO/YES] Query or Enable/Disable the xxxxx
$JATT,TILTAID[,NO/YES] Query or Enable/Disable the Tilt Sensor
$JATT,TILTCAL
Calibrate the Tilt Sensor
(the G2 must be level when this command is issued)
$JBAUD,rate[,OTHER]
Query or Set the Baud rate
• rate = 4800, 9600, 19200, 38400
(if you change the G2’s Baud rate, you must change the other
device(s) to match!)
Table 14 – Commands for Baud Rates, Installation Options & Internal Sensors
1 In most cases where the command option is NO or YES, 0 or 1 can be used instead:
0 ⇒ OFF, 1 ⇒ ON.
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