Teledyne RD Instruments SENTINEL V SELF-CONTAINED Operation Manual page 270

September 2017
Table 37: Fixed Leader Data Format
Binary Field
Byte
11,12 Pings Per
Ensemble
13,14 Depth Cell
Length
15,16 Blank after
Transmit
17 Signal
Processing
Mode
18 Low Corr
Thresh
19 No. code reps
20 %Gd Minimum
21,22 Error Velocity
Threshold
23 Minutes
24 Seconds
25 Hundredths
26 Coord
Transform
Page 254
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Description
This field is always set to 1, to represent raw single ping data.
Scaling: LSD = 1 ping; Range = 0 to 16,384 pings
Contains the length of one depth cell.
Scaling: LSD = 1 centimeter; Range = 1 to 6400 cm (210 feet)
Contains the blanking distance used by the ADCP to allow the transmit circuits
time to recover before the receive cycle begins.
Scaling: LSD = 1 centimeter; Range = 0 to 9999 cm (328 feet)
This field will always be set to 1 for ProfileMode1. The rest of the lookup values
are as follows
Profile Mode Lookup Value
ProfileMode0 0
ProfileMode1 1
CombinedMode 2
DiagnosticMode1 3
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
Contains the Number of code repetitions for the current ping.
Scaling: LSD = 1 count; Range = 0 to 255 counts
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
This field contains the actual threshold value used to flag water-current data as
good or bad. If the error velocity value exceeds this threshold, the ADCP flags all
four beams of the affected bin as bad.
Scaling: LSD = 1 mm/s; Range = 0 to 5000 mm/s
These fields contain the amount of time between ping groups in the ensemble.
Contains the coordinate transformation processing parameters. These firmware
switches indicate how the 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
Sentinel V SC and RT Operation Manual