Nortek Signature Series User Manual

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

Nortek Signature Series Specifications

General

Type	Acoustic Doppler Current Profiler (ADCP)
Operating Temperature	-5°C to +45°C
Storage Temperature	-20°C to +60°C
Temperature Sensor	Integrated
Pressure Sensor	Integrated
Compass and Tilt Sensor	Integrated
Data Storage	Internal memory
Communication Interfaces	Ethernet, RS-232
Depth Rating	Up to 6000 meters (depending on model)
Data Output	ASCII, binary
Beam Angle	Varies by model
Velocity Accuracy	±0.5% of measured velocity ±1 mm/s