New design of the BHC5 contains an additional internal test function to allow a quality check

The new hydrophone string BHC5 replaces the older unit BHC4.

BHC5 - Hydrophone String
The new BHC5 amplifier boards are now equipped with an additional internal test function. The test function outputs a synthetic signal on each channel where the amplification factors can be evaluated. This allows a quality check of the hydrophones at any time.