Vivotek ND8401 User Manual page 71

NOTE:
To manually enable DI/DO settings, please right-click the video cell and select Set DO to enable (Trigger) or

disable (Normal) the digital output of the linked device.
Before you configure the DI/DO Settings for VAST, please enable DI/DO configurations on your network device

and set up the camera correctly on the configuration page. You can right-click the device and click Camera
Settings to open the configuration page.
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User's Manual - 71