Stop Recorder Deployment
Select Stop Recorder Deployment. When data acquisition has stopped, a
dialog box will display the current AWAC and PC clock time.
Data Retrieval
Select Recorder Data Retrieval.
The recorder overview dialog will show a list of all files currently stored in the
recorder, including the time of the first measurement and the size for each
file.
Select a file in the list by clicking on the filename. Press Retrieve to specify
the name and disk location of the file.
Data Conversion
To convert binary data files retrieved from the recorder to a readable ASCII
format, select Data Conversion.
Add files to the Files to convert list by using the Add file... file selection
dialog. Select the file to convert in the list and press the blue arrow. Specify
the location for the converted files in the Save in folder field. An optional pre-
or postfix that will be added to the recorder filename may be specified. Select
from the View files drop-down list to open the converted (ASCII) files in
Notepad.
On-line Data Collection
Select Start Data Collection from the On-line menu (or press the toolbar
button) to start data acquisition. The real time display shows velocity data
and sensor data as it is collected.
To capture the data that comes in over the serial port to disk select Disk
Recording… from the On-line menu and define the name of a file (without
extension). Once this disk file is defined, the Start Disk Recording and Stop
Disk Recording menu items and toolbar buttons will be enabled.
Tip! Check the retrieved data before deploying the instrument for the second
time. If something is wrong with the instrument, the configuration or the
deployment, this will be detected and the possibility of making the same mistake
twice is avoided.
Mounting
Proper mounting of the instrument is crucial for successful collection of data.
Please mount the instrument in accordance with the Mounting Guidelines.
Basic principles
The instrument measures
current speed and direction
by transmitting sound waves
that are reflected by particles
drifting with the currents in
the water. The Doppler shift
of the return signal is
proportional to the velocity
component along the beams.
By combining the Doppler
shifts from the beams, 2D (2
beams) or 3D (3 beams)
velocity is calculated.
Measuring waves
Both the Aquadopp Current
Meter and Aquadopp Current
Profiler can measure waves
using the PUV method. The
pressure measurement
provides a means of
estimating all the non-
directional wave parameters,
while the combined P, U, and
V measurements allow for
estimating the directional
wave parameters. These
data need to be post
processed.
Data analyses
The software supplied has
been designed to provide
you with the ability to set the
instrument up for
deployment, upgrade the
firmware, download acquired
data and do a quality
assurance of them. The data
can be converted to ASCII
files that can be imported
into various post-processing
programs. In addition, Nortek
has developed a series of
real time and post-
processing software
packages that simplifies your
analyzing work. These can
be downloaded from our
website. Contact Nortek for
valid license key.
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