| The screen is blank | - Check that the Active Video Balun Hub is plugged in.
- Check that the CCTV camera is powered up.
- Check that the video cable connecting the camera to the hub is connected
properly. - Check that the cable(s) connecting the hub to the monitor, switcher, DVR, or
multiplexer are connected properly. - Double-check the connections to any passive or active baluns.
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| The screen image is dim | - Clean the camera lens (using a soft, clean cloth).
- Check that the camera light source is adequate.
- Clean the camera dome (if applicable).
- If the backlight control (BLC) DIP switch on the camera is set to OFF, try setting
it to ON.
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| The screen image is dark | - Adjust the Brightness on the Active Balun Hub.
- Check that the automatic electronic shutter (AES) DIP switch on the camera is
turned OFF.
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| The screen image has poor contrast | - Adjust the monitor’s contrast knob.
- Adjust the Contrast on the Active Balun Hub.
- Change the position of the camera.
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| The screen image flickers | - Change the position of the camera.
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| The screen image rolls | - If multiple cameras are used, make sure the polarity of the power connections
is consistent.
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| The screen image is distorted | - (24VAC only) If more than one camera is attached to the same power source,
adjust the other camera’s linelock sync. - Change the position of the camera.
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| The camera case is hot | - Check that the correct power supply is in use
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