
VT-HDOC Series
1. BEFORE INSTALLING
• Installation should be carried out only by qualified personnel and in accordance with electrical regulations in
force.
• The DVR must be placed on a stable surface or mounted in an approved cabinet. Adequate ventilation must be
provided, taking particular care not to block any of the air vents on the DVR.
• Adequate protection against lightning strikes and power surges must be installed to prevent damage to the DVR.
• Any safety warnings on the DVR and in these instructions must be adhered to.
• If cleaning is necessary, shutdown the DVR and disconnect the power source first. Use a soft dry cloth only –
never use an abrasive cleaner.
• Do not attempt to service or repair the DVR as opening or removing covers may expose dangerous voltage or
other hazards. Refer all servicing to qualified service personnel
1.1 UPDATING SYSTEM F/W
1.1.1 WITH A USB THUMB DRIVE
Steps to upgrade the firmware via USB Thumb Drive:
1.1.1.1 How to verify the F/W version
Check the F/W version provided and the F/W version currently used in the system. From the MANAGEMENT
section under the SYSTEM menu, you can see the current version of F/W.
Verify the current F/W Version
Prepare new F/W on the USB thumb drive
Begin the firmware upgrade process
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