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08011 - X2 VDR and S-VDR System Operation Guide Iss01 Rev03
AUDIO Screen
The system has ten separate input channels, shown individually under the Audio tab.
Inputs 1 to 8 are microphone channels, with inputs 9 and 10
allocated to the ship’s VHF radios.
The microphones have a built-in self-test which will be periodically automatically tested, or on
demand as part of the System Test or individually.
The self-test is undertaken by way of a beep test, which will be heard via each individual
microphone during the automatic and manual self-tests
The screen above shows
each channel’s received audio level and the current status of each
microphone.