Self-contained Hydrophone Underwater Noise Meter for Marine Mammal Sonar

    Self-contained Hydrophone Underwater Noise Meter for Marine Mammal Sonar

 

The main indicators of SCH2025 include:

(1) Pressure resistance 2000 meters

(2) Collecting ocean background noise

(3) Working time 2 months, continuous collection

(4) Automatic collection

(5) Sampling rate 32k

(6) Frequency 20Hz-10kHz

(7) Sensitivity > -197dB

2. Acceptance method and results:

(1) Pressure resistance 2000 meters

Attached with water pressure test report

(2) Collecting ocean background noise

(1) Test method

1. Short-circuit the SCH2025 input, set the SCH2025 parameters and the collection task time, and wait for SCH2025 to enter the continuous collection mode;

2. In an electromagnetic shielding environment, when the data collection lasts for more than 120 seconds, stop collecting, remove the card, and read and analyze the collected data.

(2) Evaluation criteria

The collected ocean background noise is equivalent to the correct collection circuit background noise to be qualified.

(3) Test results

Circuit noise test environment: