OXTS RT3003 - Page 124

124
Oxford Technical Solutions
Table 68. Identifier 62Bh (1579), ApproxVelocity
Offset
(bits)
Length
(bits)
Type
Units
Factor
Offset
Description Signal name
0 16 S m/s 0.01 0
Approximate OxTS
NED frame north
velocity
ApproxVelNorth
16 16 S m/s 0.01 0
Approximate OxTS
NED frame east
velocity
ApproxVelEast
32 16 S m/s 0.01 0
Approximate OxTS
NED frame vertical
(down) velocity
ApproxVelDown
48 16 U m/s 0.01 0
Approximate
horizontal speed
ApproxSpeed2D
Before initialisation the approximate velocity message will have the GNSS measurement of velocity (at
the GNSS antenna location). After initialisation it will contain the same altitude as message 603h.
Table 69. Identifier 62Dh (1581), FallingTrigger
Offset
(bits)
Length
(bits)
Type
Units
Factor
Offset
Description Signal name
0 8 U 1 0
TTL signal level (0
low, 1 high, 255
unknown)
SignalLevelFalling
8 8 U 1 0
Trigger count,
increments with each
new trigger
TriggerCountFalling
16 16 U s 0.0002 0 Time since last trigger TriggerTimeFalling
32 32 U m 0.001 0
Distance with hold
since last trigger
TriggerDistanceFalling
Table 70. Identifier 62Eh (1582), RisingTrigger
Offset
(bits)
Length
(bits)
Type
Units
Factor
Offset
Description Signal name
0 8 U 1 0
TTL signal level (0
low, 1 high, 255
unknown)
SignalLevelRising