Product Manual

121
VEL: Velocity
$PASHR,VEL,f1,m2,f3,f4,f5,f6,f7,f8,d9*cc
VTG: Course Over Ground and Ground Speed
$GPVTG,f1,T,f2,M,f3,N,f4,K,c5*cc
ZDA: Date & Time
$GPZDA,ZDA,m1,d2,d3,d4,d5,d6*cc
Parameter Description Range
f1 Reserved 1
m2 Current UTC time of velocity fix (hhmmss.ss)
f3 Easting velocity, in m/s
f4 Northing velocity, in m/s
f5 Vertical velocity, in m/s
f6 Easting velocity RMS error, in mm/s
f7 Northing velocity RMS error, in mm/s
f8 Vertical velocity RMS error, in mm/s
d9
Applied effective velocity smoothing interval,
in ms (empty if unknown)
*cc Checksum *00-*FF
Parameter Description Range
f1,T
COG (with respect to True North)
T for “True” North: COG orientation
000.00-359.99
f2,M
COG (with respect to Magnetic North)
M for “Magnetic” North: COG orientation
000.00-359.99
f3,N
SOG (Speed Over Ground)
N for “knots”: SOG unit
000.00-999.999
f4,K
SOG (Speed Over Ground)
K for “km/hr”: SOG unit
000.00-999-999
c5
Mode indicator:
• A: Autonomous mode
• D: Differential mode
• N: Data not valid
A, D, N
*cc Checksum *00-*FF
Parameter Description Range
m1 UTC time (hhmmss.ss)
000000.00-
235959.99
d2 Current day 01-31
d3 Current month 01-12
d4 Current year 0000-9999
d5 Local zone offset from UTC time (hour) -13 to +13
d6 Local zone offset from UTC time (minutes) 00-59
*cc Checksum *00-*FF