The NVR9006 OMU is an external (outdoor) audio pickup device designed to record ambient sound and voice communications on a ship’s bridge exterior (e.g., bridge wings).
It connects to the Data Acquisition Unit (DAU) of the VDR system and feeds audio into the recorder.
Technical Specification
⚙️ Key technical details
Model: NVR9006
Type: Outdoor Microphone Unit (OMU)
Protection rating: IP56 (weather-resistant)
Weight: ~0.2 kg
Power supply: +12V DC via DAU connection
Wiring (typical pinout)
MIC_AUDIO−
MIC_AUDIO+
GND
+12V
Earth
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