说明：  The iVMS-4000(V2.0) is the client application specially developed for the embedded DVR/DVS. It is applicable to DVR, hybrid DVR, NVR, DVS, IP Camera, IP Dome, audio/video decoder, and iVMS-2000 client software as well. The iVMS-4000(V2.0) client provides the Decoder Application and Module USB Joystick options in the Help menu for user to select decoder control and USB joystick control. Note: There may be technical inaccuracies, or typographical errors in the manual. The contents including description of products and program will be updated without prior notice.