Nortek Support
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Activity overview
Latest activity by Nortek Support-
Nortek Support created an article,
What happens when my instrument is tilted and what actions should I take?
It can be difficult to avoid instrument tilt throughout the entirety of a deployment. In some cases the instrument rigging shifts or is installed at an undesirable angle due to an object or incline...
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Nortek Support created an article,
Which assumptions are made during measurements with ADCP instruments?
Suspended particles (scattering materials) are moving at the same velocity as the water ADCP instruments cannot measure water velocity directly. The instruments utilize the Doppler effect by transm...
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Nortek Support created an article,
What are the different coordinate systems and how are they defined?
All Nortek instruments define the direction of measured current velocities using three primary coordinate systems: Beam coordinate system Cartesian coordinate system (XYZ) East-North-Up coordinate...
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Nortek Support created an article,
What noise floor is used during processing in SeaReport?
The noise floor, together with returned signal strength, is used to calculate SNR. The instrument noise floor is unique for each instrument and deployment. During processing in SeaReport the specif...
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Nortek Support created an article,
How does SeaReport calculate tilt?
SeaReport uses values of pitch and roll to calculate tilt with the following formula: tilt = acos(cos(pitch)*cos(roll))
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Nortek Support created an article,
Where can I find instrument software and firmware?
All Nortek instrument software and firmware can be downloaded from here https://www.nortekgroup.com/software
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Nortek Support created an article,
Where can I find the AWAC VM user manual?
An older version of the Vessel Mounted Current Profiler user manual is available for download below. How to use and operate SurveyVM is explained in the software
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Nortek Support created an article,
Do you have any information about the Signature AHRS?
The Signature instruments have a built in accelerometer and magnetometer to provide correct data for the instrument tilt and heading. This approach works well for a fixed instrument; the standard s...
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Nortek Support created an article,
How does the AquaPro HR measure currents?
While a regular AquaPro uses a single pulse (incoherent) method to calculate water motion, the AquaPro HR uses the pulse-to-pulse (pulse coherent) method. That means the phase difference covariance...
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Nortek Support created an article,
What should I take into consideration when deploying an AquaPro HR?
The AquaPro HR works with two different pulses that should not be in the water at the same time. If this happens and the echo from first pulse overpowers the echo from the second pulse, a “pulse-to...