ComNav Vector G2 - Status & Time Constant Commands

ComNav Vector G2/G2B Installation & Operation Configuration
Command Description
$GPCRQ,MSK Query the Beacon receiver’s operational status (G2B only)
$GPCRQ,MSS Query the Beacon receiver’s performance status (G2B only)
$JATT,CSEP
Query Current Antenna Separation
• should always return 0.500 ± 0.010 metres
$JATT,HELP Provide a short list of commands available
$JATT,MSEP,sep
Query or Set the antenna separation
• this must not be changed from the default of 0.5 metres
$JATT,SUMMARY Query current settings of several parameters
$JI Query the G2’s serial number and firmware versions
$JT Query the receiver type
$JQUERY,GUIDE Query whether the G2 is providing suitable performance or not
$JRESET L Reset to default settings L DO NOT USE
$JSAVE Save current Configuration
$JSHOW Show current Configuration
$JWAASPRN Query PRNs of SBAS satellites currently being used
Table 11 – Status Query & Save Configuration Commands
L The $JRESET command should NEVER be used!!
It does not reset the G2’s configuration to the ComNav factory defaults, as you
might expect, but instead to Hemisphere GPS’s own factory defaults, which are
quite different (including the Baud rates being 19200).
If you happen to send this command by accident, please call your ComNav
Dealer for assistance in restoring normal operation of your G2.
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 12 – Control Commands for the Smoothing Time Constants
Note: see Smoothing Output Data with Time Constants on page 26 for full details of
the TAU time constants.
Document PN 29010078 V1.6 (Addendum #1) - 23 -