How do I change batteries in my Signature 1000? Nortek Support May 24, 2022 14:38 Updated Follow Related articles How do I carry out a compass calibration? How to get started with your ADCP How can I estimate the instrument power consumption? How much torque should I use on my endbell screws? What are some common mistakes when deploying ADCP's Comments 0 comments Please sign in to leave a comment.