MDR688D User Manual Brandname: Veelock Category: DVR Total Pages: 75 Table of contents ImportantSafeguard2TableofContents41BeforeUsingThisDvr613RearPanel72ConnectionandSetup922CameraConnection1123DvrPowerOn1425ClearHardDisk1531ConnectUsbMouse1733MainMenu194BasicOperation2043Playback2144UserLevelSwitch225Frequently-UsedFunctions2452Record2553ScheduleSetting2754DetectionSetting2955PtzCameraSetting3056SystemSetting3157Network35