WorkHorse H-ADCP Operation Manual
May
2015
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Page 209
Table 37:
Variable Leader Data Format
Hex Digit
Binary Byte
Field
Description
49-52
25,26
ES / Salinity
Contains the salinity value of the water at the transducer head (ES-command). This
value may be a manual setting or a reading from a conductivity sensor.
Scaling: LSD = 1 part per thousand; Range = 0 to 40 ppt
53-56
27,28
ET / Temperature
Contains the temperature of the water at the transducer head (ET-command). This
value may be a manual setting or a reading from a temperature sensor.
Scaling: LSD = 0.01 degree; Range = -5.00 to +40.00 degrees
57,58
59,60
61,62
29
30
31
MPT minutes
MPT seconds
MPT hundredths
This field contains the Minimum Pre-Ping Wait Time between ping groups in the
ensemble.
63,64
65,66
67,68
32
33
34
H/Hdg Std Dev
P/Pitch Std Dev
R/Roll Std Dev
These fields contain the standard deviation (accuracy) of the heading and tilt angles
from the gyrocompass/pendulums.
Scaling (Heading): LSD = 1
°
; Range = 0 to 180
°
Scaling (Tilts): LSD = 0.1
°
; Range =
0.0 to 20.0
°
69-70
71-72
73-74
75-76
77-78
79-80
81-82
83-84
35
36
37
38
39
40
41
42
ADC Channel 0
ADC Channel 1
ADC Channel 2
ADC Channel 3
ADC Channel 4
ADC Channel 5
ADC Channel 6
ADC Channel 7
These fields contain the outputs of the Analog-to-Digital Converter (ADC) located on
the DSP board. The ADC sequentially samples one of the eight channels per ping
group (the number of ping groups per ensemble is the maximum of the WP). These
fields are zeroed at the beginning of the deployment and updated each ensemble at
the rate of one channel per ping group. For example, if the ping group size is 5,
then:
END OF ENSEMBLE No. CHANNELS UPDATED
Start All channels = 0
1 0, 1, 2, 3, 4
2 5, 6, 7, 0, 1
3 2, 3, 4, 5, 6
4 7, 0, 8, 2, 3
↓
↓
Here is the description for each channel:
CHANNEL DESCRIPTION
0 XMIT CURRENT
1 XMIT VOLTAGE
2 AMBIENT TEMP
3 PRESSURE (+)
4 PRESSURE (-)
5 ATTITUDE TEMP
6 ATTITUDE
7 CONTAMINATION SENSOR
Note that the ADC values may be “noisy” from sample-to-sample, but are useful for
detecting long-term trends. See
for more information.
85-86
43
Error Status Word
Contains the long word containing the bit flags for the CY? Command. The ESW is
cleared (set to zero) between each ensemble.
Note that each number above represents one bit set – they may occur in combina-
tions. For example, if the long word value is 0000C000 (hexadecimal), then it indi-
cates that both a cold wake-up (0004000) and an unknown wake-up (00008000)
occurred.
Low 16 BITS
LSB
BITS 07 06 05 04 03 02 01 00
x x x x x x x 1 Bus Error exception
x x x x x x 1 x Address Error exception
x x x x x 1 x x Illegal Instruction exception
x x x x 1 x x x Zero Divide exception
x x x 1 x x x x Emulator exception
x x 1 x x x x x Unassigned exception
x 1 x x x x x x Watchdog restart occurred
1 x x x x x x x Battery Saver power