Blanking distance

     Hi, I want to know the minimum blanking distance of Nortek-ADP HR which frequency is 1MHz, when I set the distance to be 0.2m, it will get a warning. Can I set this value to measure?  How big is blanking distance to velocity?

     Thank you!

The blanking distance allows the transducers to stop ringing from the transmit pulse before collecting velocity data. For the 1 MHz HR Profiler, we recommend a blanking distance of 0.4 m. You may set this value lower (as low as 0.2 m), but cells closer to the profiler than 0.4 m may be subject to bias and you will need to verify their measurements carefully.

P.J.