Table 36: Fixed Leader Data Format - Teledyne WORKHORSE Operation Manual

WorkHorse H-ADCP Operation Manual
Fixed Leader data refers to the non-dynamic H-ADCP data that only changes when you change certain
commands. Fixed Leader data also contain hardware information. The H-ADCP always sends Fixed Lead-
er data as output data (LSBs first).
Table 36: Fixed Leader Data Format
Hex Digit Binary Byte
1-4 1,2
5,6 3
7,8 4
9-12 5,6
13,14 7
15,16 8
17,18 9
19,20 10
21-24 11,12
25-28 13,14
Field Description
FID / Fixed Leader ID Stores the Fixed Leader identification word (00 00h).
fv / CPU F/W Ver. Contains the version number of the CPU firmware.
fr / CPU F/W Rev.
Contains the revision number of the CPU firmware.
Sys Cfg / System This field defines the H-ADCP hardware configuration. Convert this field (2 bytes, LSB
Configuration first) to binary and interpret as follows.
LSB
BITS
MSB
BITS 7 6 5 4 3 2 1 0
- - - - - - 0 0
- - - - - - 0 1
- - - - - - 1 0
- - - - - - 1 1
0 1 0 0 - - - -
0 1 0 1 - - - -
1 1 1 1 - - - -
Example: Hex 5249 (i.e., hex 49 followed by hex 52) identifies a 150-kHz system, con-
vex beam pattern, down-facing, 30E beam angle, 5 beams (3 demods).
PD / Real/Sim Flag This field is set by default as real data (0).
Lag Length Lag Length. The lag is the time period between sound pulses. This is varied, and there-
fore of interest in, at a minimum, for the WM5, WM8 and WM11 and BM7 commands.
#Bm / Number of The number of beams is set to 4 to maintain compatibility with existing software.
Beams
WN / Number of Contains the number of depth cells over which the H-ADCP collects data (WN-
Cells command).
Scaling: LSD = 1 depth cell; Range = 1 to 128 depth cells
WP / Pings Per En- Contains the number of pings averaged together during a data ensemble (WP-
semble command). If WP = 0, the H-ADCP does not collect the WD water-profile data. Note:
The H-ADCP automatically extends the ensemble interval (TE) if the product of WP and
time per ping (TP) is greater than TE (i.e., if WP x TP > TE).
Scaling: LSD = 1 ping; Range = 0 to 16,384 pings
WS / Depth Cell Contains the length of one depth cell (WS-command).
Length
Scaling: LSD = 1 centimeter; Range = 1 to 6400 cm (210 feet)
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
7 6 5 4 3 2 1 0
- - - - - 0 0 0 75-kHz SYSTEM
- - - - - 0 0 1 150-kHz SYSTEM
- - - - - 0 1 0 300-kHz SYSTEM
- - - - - 0 1 1 600-kHz SYSTEM
- - - - - 1 0 0 1200-kHz SYSTEM
- - - - - 1 0 1 2400-kHz SYSTEM
- - - - 0 - - - CONCAVE BEAM PAT.
- - - - 1 - - - CONVEX BEAM PAT.
- - 0 0 - - - - SENSOR CONFIG #1
- - 0 1 - - - - SENSOR CONFIG #2
- - 1 0 - - - - SENSOR CONFIG #3
- 0 - - - - - - XDCR HD NOT ATT.
- 1 - - - - - - XDCR HD ATTACHED
0 - - - - - - - DOWN FACING BEAM
1 - - - - - - - UP-FACING BEAM
15E BEAM ANGLE
20E BEAM ANGLE
30E BEAM ANGLE
OTHER BEAM ANGLE
4-BEAM JANUS CONFIG
5-BM JANUS CFIG DEMOD)
5-BM JANUS CFIG.(2 DEMD)
May 2015
Page 203