How Do I Know Whether I Should Be in Analog or Digital Mode?

  • Changing the Source and Analog or Digital Mode

    Monitors are connected to computers with several different kinds of cables (see images below). The older style of cables, called D-sub cables, sends an analog signal (VGA and RGB cables are two different kinds of D-sub cables). Newer cables, like DVI and HDMI, send a digital signal. This matters because the correct input mode must be selected for your monitor to detect the signal coming through the cable from your computer.

    When you first connect a VGA, DVI, HDMI, or other cable to your monitor, nothing may display because the monitor is in the wrong mode (e.g. in analog mode when using an HDMI cable). To cycle between analog, digital, and HDMI modes, press the source button repeatedly. On most monitors, the source button will look like one or both of the buttons below:

    The mode for different cables are as follows:

    • If the monitor is connected to the video card on your computer using a standard 15-pin D-sub (VGA, RGB) cable, you must use the analog input mode.  our monitor will not work if you select digital mode.
    • If you have connected your monitor to the video card on your computer using a DVI cable, you must use digital input mode.
    • If your monitor is connected with an HDMI cable, then the HDMI input mode must be used.

    Note: Some video cards offer both D-sub (VGA, RGB) and DVI jacks. If yours does, depending on your monitor, you can use either/or. If you connect both, you can switch from one to the other.

    Tip: If your monitor keeps cycling between different sources (HDMI, analog, etc.) without displaying anything, or if your monitor displays only "Check signal cable," the monitor is not receiving any signal, and there may be a problem with the cable. Check to make sure your cable is firmly connected on both ends. If it is, try a different cable.

  • Examples of Different Cables


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