Operating Instructions and Installation Instructions

ManualsBrandsComNav ManualsMarineVector G2

ComNav Vector G2/G2B Installation & Operation Operation

Document PN 29010078 V2.0 - 55 -

DRAFT #3 – 29 May 2009

Command Description

$J4STRING,BAUD[,OTHER]

• Enable GPGGA, GPGSA, GPVTG & GPZDA at 1 Hz

• Set both ports Baud rate to BAUD (4800, 9600, 19200,

38400)

• Do a $JSAVE (see Table 16) L

$JAGE,age

Set the Differential Age Timeout

• age = 6 to 8100 seconds

$JATT,COAST[,NO/YES] 1 Query or Enable/Disable the xxxxx

$JATT,COGAID[,NO/YES] Query or Enable/Disable the xxxxx

$JATT,EXACT[,NO/YES] Query or Enable/Disable the xxxxx

$JATT,HDMTRUE[,NO/YES]

Query or Set whether the Heading value in GPHDM is in

degrees True or degrees Magnetic

• NO ⇒ Magnetic, YES ⇒ True

$JATT,HIGHMP[,NO/YES] Query or Enable/Disable the xxxxx

$JATT,NMEAHE[,NO/YES]

Query or Set the Talker ID for heading sentences:

• NO ⇒ all sentences use GP

• YES ⇒ HEHDG, HCHDM, HEHDT, HEROT

$JATT,STOPPED[,NO/YES] Query or Enable/Disable the xxxxx

$JDIFF[,source]

Query or Set the DGPS source:

• NONE ⇒ Operate in autonomous mode

• WAAS ⇒ SBAS corrections

• OTHER ⇒ RTCM SC-104 corrections input through Port B

• BEACON ⇒ Radiobeacon corrections (G2B only)

$JMASK,angle

Set a cut-off elevation, below which satellites will be ignored

• Angle range is 0° to 60°

$JNP[,digits]

Query or set the number digits after the decimal point in the

GPGGA & GPGLL output sentences

• digits = 1 to 8

$JOFF[,OTHER]

Turn off all NMEA & Proprietary data output

L The PCSI Beacon status sentences must be turned off with

a $PCSI,0,0 and/or $PCSI,1,0 command

L The RTCM output sentence must be turned off with a

$JASC,RTCM,0[,OTHER] command

$JPOS[,latitude,longitude]

Query or set an initial position, to speed up re-acquisition time

• Latitude & Longitude must be in decimal degrees

example: $JPOS,49.2,123.1

Table 15 – Commands for Miscellaneous Features & Functions

1 In most cases where the command option is NO or YES, 0 or 1 can be used instead:

⇒

OFF, 1

⇒

ON.

L Caution! The automatic $JSAVE done by the $J4STRING command will any include

any other changes you may have made before sending the command.