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WorkHorse H-ADCP Operation Manual
May
2015
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Page 205
Table 36:
Fixed Leader Data Format
Hex Digit
Binary Byte
Field
Description
61,62
31
EZ / Sensor Source
Contains the selected source of environmental sensor data (EZ-command). These
firmware switches indicate the following.
FIELD DESCRIPTION
x1xxxxxx = CALCULATES EC (SPEED OF SOUND) FROM
ED, ES, AND ET
xx1xxxxx = USES ED FROM DEPTH SENSOR
xxx1xxxx = USES EH FROM TRANSDUCER HEADING
SENSOR
xxxx1xxx = USES EP FROM TRANSDUCER PITCH SENSOR
xxxxx1xx = USES ER FROM TRANSDUCER ROLL SENSOR
xxxxxx1x = USES ES (SALINITY) FROM CONDUCTIVITY
SENSOR
xxxxxxx1 = USES ET FROM TRANSDUCER TEMPERATURE
SENSOR
NOTE: If the field = 0, or if the sensor is not available, the H-ADCP uses the manual
command setting. If the field = 1, the H-ADCP uses the reading from the internal sen-
sor or an external synchro sensor (only applicable to heading, roll, and pitch). Although
you can enter a “2” in the EZ-command string, the H-ADCP only displays a 0 (manual)
or 1 (int/ext sensor).
63,64
32
Sensor Avail
This field reflects which sensors are available. The bit pattern is the same as listed for
the EZ-command (above).
65-68
33,34
dis1 / Bin 1 distance
This field contains the distance to the middle of the first depth cell (bin). This distance
is a function of depth cell length (WS), the profiling mode (WM), the blank after
transmit distance (WF), and speed of sound.
Scaling: LSD = 1 centimeter; Range = 0 to 65535 cm (2150 feet)
69-72
35,36
WT Xmit pulse
length
This field, set by the WT-command, contains the length of the transmit pulse. When
the H-ADCP receives a <BREAK> signal, it sets the transmit pulse length as close as
possible to the depth cell length (WS-command). This means the H-ADCP uses a WT
command of zero. However, the WT field contains the actual length of the transmit
pulse used.
Scaling: LSD = 1 centimeter; Range = 0 to 65535 cm (2150 feet)
73,74 75,76
37,38
WL / WP Ref Lyr Avg
(Starting cell, Ending
cell)
Contains the starting depth cell (LSB, byte 37) and the ending depth cell (MSB, byte 38)
used for water reference layer averaging (WL-command).
Scaling: LSD = 1 depth cell; Range = 1 to 128 depth cells
77,78
39
WA / False Target
Threshold
Contains the threshold value used to reject data received from a false target, usually
fish (WA-command).
Scaling: LSD = 1 count; Range = 0 to 255 counts (255 disables)
79,80
40
Spare
Contains the CX-command setting. Range = 0 to 5
81-84
41,42
LagD / Transmit lag
distance
This field, determined mainly by the setting of the WM-command, contains the dis-
tance between pulse repetitions.
Scaling: LSD = 1 centimeter; Range = 0 to 65535 centimeters
85-100
43-50
CPU Board Serial
Number
Contains the serial number of the CPU board. The CPU Board Serial number is stored in
Big Endian (MSB sent first).
101-105
51-52
WB / System Band-
width
Contains the WB-command setting. Range = 0 to 1
106-107
53
System Power
Contains the CQ-command setting. Range 0 to 255.
108-109
54
Spare
Spare
110-119
55-58
Serial #
Instrument serial number. The CPU Board Serial number is stored in Big Endian (MSB
sent first).
120 -121
59
Beam Angle
Beam angle