Nortek Signature Series - Bottom Track Data Record Definition

Integrator's Guide62
© 2017 Nortek AS
6.1.3 Bottom Track Data Record Definition (DF20)
Field
Size
Format
Resolution/
Unit
Description
Version
8 bits
Version number of the Data Record Definition. (3)
offsetOfData
8 bits
Unsigned
#Bytes
Number of bytes from start of record to start of
data (velocity/amplitude/correlation)
Configuration
16 bits
Record Configuration Bit Mask
Bit 0
Pressure sensor value
valid.
Bit 1
Temperature sensor
value valid.
Bit 2
Compass sensor values
valid.
Bit 3
Tilt sensor values valid.
Bit 4
-
Bit 5
Velocity data included
Bit 6
-
Bit 7
-
Bit 8
Distance data included
Bit 9
Figure of Merit data
included
Bit 10-15
Unused
Serial Number
32 bits
Unsigned
Year
8 bits
Unsigned
1 Year
Years since 1900 (see struct tm definition)
Month
8 bits
Unsigned
1 Month
Jan =0, Feb= 1, etc.(see struct tm definition)
Day
8 bits
Unsigned
1 Day
(see struct tm definition)
Hour
8 bits
Unsigned
1 Hour
(see struct tm definition)
Minute
8 bits
Unsigned
1 Minute
(see struct tm definition)
Seconds
8 bits
Unsigned
1 Second
(see struct tm definition)
Microsec100
16 bits
Unsigned
100 µsec
Speed of
Sound
16 bits
Unsigned
0.1 m/s
Temperature
16 bits
Signed
0.01 Degree
Celsius
Pressure
32 bits
Unsigned
0.001 dBar
Heading
16 bits
Unsigned
0.01 Deg
Pitch
16 bits
Signed
0.01 Deg