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May
2015
WorkHorse H-ADCP Operation Manual
Page 204
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Table 36:
Fixed Leader Data Format
Hex Digit
Binary Byte
Field
Description
29-32
15,16
WF / Blank after
Transmit
Contains the blanking distance used by the H-ADCP to allow the transmit circuits time
to recover before the receive cycle begins (WF-command).
Scaling: LSD = 1 centimeter; Range = 0 to 9999 cm (328 feet)
33,34
17
Signal Processing
Mode
Contains the Signal Processing Mode. This field will always be set to 1.
35,36
18
WC / Low Corr
Thresh
Contains the minimum threshold of correlation that water-profile data can have to be
considered good data (WC-command).
Scaling: LSD = 1 count; Range = 0 to 255 counts
37,38
19
cr# / No. code reps
Contains the number of code repetitions in the transmit pulse.
Scaling: LSD = 1 count; Range = 0 to 255 counts
39,40
20
WG / %Gd Minimum Contains the minimum percentage of water-profiling pings in an ensemble that must
be considered good to output velocity data.
Scaling: LSD = 1 percent; Range = 1 to 100 percent
41-44
21,22
WE / Error Velocity
Threshold
This field, initially set by the WE-command, contains the actual threshold value used to
flag water-current data as good or bad. If the error velocity value exceeds this thresh-
old, the H-ADCP flags all four beams of the affected bin as bad.
Scaling: LSD = 1 mm/s; Range = 0 to 5000 mm/s
45,46
47,48
49,50
23
24
25
Minutes
Seconds
Hundredths
These fields, set by the TP-command, contain the amount of time between ping groups
in the ensemble. NOTE: The H-ADCP automatically extends the ensemble interval (set
by TE) if (WP x TP > TE).
51,52
26
EX / Coord Trans-
form
Contains the coordinate transformation processing parameters (EX-command). These
firmware switches indicate how the H-ADCP collected data.
xxx00xxx = NO TRANSFORMATION (BEAM COORDINATES)
xxx01xxx = INSTRUMENT COORDINATES
xxx10xxx = SHIP COORDINATES
xxx11xxx = EARTH COORDINATES
xxxxx1xx = TILTS (PITCH AND ROLL) USED IN SHIP
OR EARTH TRANSFORMATION
xxxxxx1x = 3-BEAM SOLUTION USED IF ONE BEAM IS
BELOW THE CORRELATION THRESHOLD SET
BY THE WC-COMMAND
xxxxxxx1 = BIN MAPPING USED
53-56
27,28
EA / Heading Align-
ment
Contains a correction factor for physical heading misalignment (EA-command).
Scaling: LSD = 0.01 degree; Range = -179.99 to 180.00 degrees
57-60
29,30
EB / Heading Bias
Contains a correction factor for electrical/magnetic heading bias
(EB-command).
Scaling: LSD = 0.01 degree; Range = -179.99 to 180.00 degrees