4.4.9 Digital ManagerChannel manage including : Digital channel, Channel status, Channel mode: Digital Channels: 【Channel】select channel title;【Enable】Open digital channel, tick enable, then can do related settings;【Time Synchronization】Tick it means the time of this channel and device is the same.【Connection Mode】can be singe connect or multi-ink, multi-link modes can connect to several devices, device will be tour displayed one by one, tour interval can be se