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1.Introduction
SD-AT204-TVI-AHD is a 4CH TVI/AHD/D1 HD Video Multiplexer.

2.Characteristics
●4 channel video input，each channel can accept TVI/AHD/D1，the format of input video (D1/AHD/TVI) and video mode(PAL/NTSC)can setting.
●For each channel,the brightness,contrast,saturation and hue can adjust.
●Support 2 channel CVBS output(NTSC：720X480, PAL：720X576).
●Support HDMI/VGA output and the resolution of output can setting(1024x768、1280x1024、1440x900、720P/50/60、1080P/50/60).
●Support all kinds of display mode, include QUAD、2CH(left/right)、2CH(UP/DOWN)、single channel and PIP mode.
●The output channel of PIP mode can select by the menu.
●Hight performance FREEZE function.
●Spport channel auto sequence, the interval time can adjuct by menu(3~99s).
●Support ZOOM function.
●Support the alarm of video loss.
●Users can operate device by keyboard and remote control.
●Support English menu，the input,display,image,autoseq and system reset can setting by the menu.