Frequently Asked Questions
In this FAQ section you will find short articles written by our support staff that can help you answer questions we often receive from our customers. The content can be accessed using the Search function
Deployment
- For how long can batteries be stored before use?
- Do you have any recommendations on how to clean the instruments and how to prevent growth (biofouling)?
- What is sidelobe interference? Why does it occur?
- Invalid data file - Time span check failed. What is the problem?
- How can we deal with magnetic influence when mounting an instrument near/on a metallic structure?
- How will sediment on the transducers affect the measurements?
Ocean Currents
- What is the maximum horizontal profiling range for a 2D profiler?
- What is the maximum configurable baud rate for Signatures?
- How do I change the orientation on my Signature from horizontal to vertical?
- Is the Doppler noise constant with range?
- What can I do when I receive an error message when deploying my Signature?
- How do I change my Signature configuration (.deploy file) outside of the Deployment software?
Ocean Waves
- What is the longest average interval possible on AWAC without skipping a measurement?
- Why does my AWAC AST appear to miss the surface and have bad/missing detects?
- What do the AWAC Error Codes mean?
- Why is there a minimum average interval on AWAC?
- How long can we measure waves?
- How is wave direction defined?
Software
- How does adjustable transmit power work?
- The binary to ASCII data conversion is not working. What is the problem?
- My instrument is not communicating. What should I do next?
- How can I download data from my Signature?
- How can we get the Nortek standard control software to start-up automatically?
- How does the AWAC estimate ice thickness?
Subsea Navigation
System Integration
- I want to develop my own application to be used with a Nortek instrument. Can you provide me with some information to get me started?
- How to sync the Signature clock over Ethernet (PTP or NTP)?
- What is the maximum number of files on the recorder?
- What should typical power drain be?
- What are the hex and binary data conventions?
Velocimeters
- The Vectrino probe is not recognized. What is the problem?
- What does the accuracy specification mean?
- How do I return a damaged instrument? What is a Return Merchandise Authorization (RMA) number?
- How do I synchronize Vectrinos?
- How do you figure out the time to assign to Vector velocity samples?
- How is a Coordinate transformation done?
Vessel-mounted Systems
- What FFT method is used in Storm?
- How do I calibrate my vessel mounted AWAC?
- Where does the AWAC VM get time/date information from?
- Can I use my AWAC for moving boat application?
- How should I mount the VM system?
- Why do I see a high Vertical Velocity?