OXTS RT3000 - Page 120

122
Oxford Technical Solutions
Offset
(bits)
Length
(bits)
Type
Units
Factor
Offset
Approximate OxTS
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 59. Identifier 62Dh (1581), FallingTrigger
0 8 U 1 0
TTL signal level (0
low, 1 high, 255
unknown)
SignalLevelFalling
16 16 U s 0.0002 0 Time since last trigger TriggerTimeFalling
Table 60. Identifier 62Eh (1582), RisingTrigger
TTL signal level (0
NED frame east
velocity
Description Signal name
Trigger count,
increments with each
new trigger
TriggerCountFalling
32
32
0.001
Distance with hold
since last trigger
TriggerDistanceFalling
Description Signal name
Offset
(bits)
Length
(bits)
Type
Units
Factor
Offset
32
16
S
m/s
0.01
0 NED frame vertical ApproxVelDown
(down) velocity
48
16
U
m/s
0.01
0
Approximate
ApproxSpeed2D
horizontal speed
0
8
U
1
0 low, 1 high, 255 SignalLevelRising
unknown)
8
8
U
1
Trigger count,
0 increments with each TriggerCountRising
new trigger
16
16
U
s
0.0002
0 Time since last trigger TriggerTimeRising
32
32
U
m
0.001
0
Distance with hold
TriggerDistanceRising
since last trigger