Canon C50i User Manual - Page 178
Using the Audio Playback, Recording* Function Linked to an External Device
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Using the Audio Playback/Recording* Function Linked to an External Device * The Audio Recording function is available with two particular models (→ P.iii) By using the Audio Playback and audio recording* functions in the External Device Input settings, it is possible to construct a monitoring system that issues audio alert using previously saved sounds and captures video and audio* in response to external events. Photographed still images and recorded audio files* are stored in the VB-C50i/VB-C50iR's memory (→ P.3-29). Sample Application Combining a Speaker, Microphone and Door-opening Sensor Each day between 5 pm. and 6 am., this monitoring system emits an audio alert whenever the door opens and the VB-C50iR mounted on the ceiling records images shot at 1-second intervals from 3 seconds before the door opens to 7 seconds after the door closes. It also records audio* during that period. Install the devices below connected to the respective connectors on the Multi- Terminal Module. Installation Example Speaker with amp Sensor A VB-C50iR Microphone Sensor B Multi-Terminal Module VB-EX50 Ethernet When the door opens and sensor B mounted on it separates from sensor A, an ON event occurs at external device inputs IN+ and IN-. In response to this event, the VB-C50iR emits the stored audio alert from the speaker with amp, shoots and records pictures of the doorway and records any audio* picked up by the microphone. Please refer to the Multi-Terminal Module User's Manual for how to connect the MultiTip Terminal Module to the VB-C50i/VB-C50iR. 6-4
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