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Chapter 2: Installation
8 truVision DVR 31 User Manual
Connecting required devices
Before powering up the unit, cameras and a main monitor should be connected
to the unit for basic operation. If needed, connect a spot monitor for displaying
full screen video of all installed cameras in sequence.
Note: You can attach an extension to the RS-485 port on the back panel.
Connecting external devices
When connecting external devices to include as part of the entire system, such
as a USB drive or any other USB devices, connect those devices only when the
unit displays live view. The DVR 31 recognizes external devices only after the
unit has gone through the initialization process.