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WorkHorse H-ADCP Operation Manual
May
2015
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Page 225
48
PITCH
LSB
49
MSB
50
ROLL
LSB
51
MSB
52
TEMPERATURE
LSB
53
MSB
54
BIT RESULTS
LSB
55
MSB
56
CHECKSUM
LSB
57
MSB
Figure 55.
DVL Binary Data Format (PD3)
DVL Output Data Format (PD3) Details
The H-ADCP sends this data format only when the PD3 command is used. In multiple byte parameters,
the least significant byte always comes before the more significant bytes.
Table 46:
DVL Output Data Format (PD3) Details
Hex Digit
Binary Byte Field
Description
1,2
1
DVL Data ID
Stores the DVL (speed log) identification word (7Eh)
3,4
2
Reserved
Reserved
5-8
3,4
X-Vel Btm
† Bit #0: Always output. If the data bit is set to 0, then Ship coordinates are used. If the
data bit is set to 1, then Earth coordinates are used. These fields contain the velocity of the
vessel in relation to the bottom in mm/s. Positive values indicate vessel motion to (X)
Starboard/East, (Y) Forward/North, (Z) Upward.
9-12
5,6
Y-Vel Btm
13-16
7,8
Z-Vel Btm
† Bit #1: Vertical velocities.
17-20
9,10
X-Vel Water
† Bit #2: These fields contain the velocity of the vessel in relation to the water reference
layer in mm/s. Positive values indicate vessel motion to (X) Starboard/East, (Y) For-
ward/North, (Z) Upward.
21-24
11,12
Y-Vel Water
25-28
13,14
Z-Vel Water
† Bit #1 and Bit #2
29-32
33-36
37-40
41-44
15,16
17,18
19,20
21,22
Bm1
Bm2 Rng to
Bm3 Bottom
Bm4
† Bit #3: These fields contain the vertical range from the H-ADCP to the bottom as deter-
mined by each beam. This vertical range does not compensate for the effects of pitch and
roll. When a bottom detection is bad, the field is set to zero.
Scaling: LSD = 1 centimeter; Range = 0 to 65535 cm
45-48
23,24
Avg Rng to Btm
† Bit #4: These fields contain the average vertical range from the H-ADCP to the bottom as
determined by each beam.
49-80
25-40
Spare
Spare