What is Auto Gain Control (AGC)?
Auto Gain Control (AGC) will adjust the sensitivity of CCD pick-up elements automatically based on the light condition. When the light condition is dark, the sensitivity goes up and you can get a brighter display. When the light condition is too bright, the sensitivity goes down and you can get a darker display. When the light condition is normal, the sensitivity is also normal. "AGC" option means the sensitivity is normal; "MAX" option means the sensitivity of AGC goes to the maximum. However, the higher the sensitivity, the more the signal noise.