Sanyo VCC-HD2500 Manual page 49

Configure the video signal gain value automatically or manually.
Automatically configuring gain value using AGC
Manually configuring gain value
Auto Gain Control (AGC) is a function that automatically adjusts the gain value of the camera's video
signal amplifying circuit according to the brightness of the subject to maintain a constant signal
output.
The configured settings will be applied to "CAM1" or "CAM2", whichever you selected under [VIEW].
1
In [AGC], select "ON".
2
In [MAX GAIN], select the maximum gain level for AGC and click
Selecting a higher gain level will improve the camera sensitivity in a dark condition, but increase the noise as well.
NORMAL: For normal subject
For slightly dark subject
MIDDLE:
HIGH: For dark subject
The maximum gain value varies depending on the Day/Night mode.
If you set [AGC] to "OFF", you cannot enable the electronic sensitivity boosting function (in [SENSE
UP] in [IRIS]).
You cannot select "OFF" in [AGC] if the Day/Night function ([DAY/NIGHT]) is set to "AUTO" or the
electronic sensitivity boosting ([SENSE UP] in [IRIS]) is enabled.
1
In [AGC], select "OFF".
2
In [GAIN SETTING], select the gain value of AGC and click
0dB, 3dB, 6dB, 9dB, 12dB, 15dB, 18dB, 21dB, 24dB, 27dB, 30dB, 33dB, 36dB, 39dB, 42dB
SET
Working with Administrator Configuration Screens 29/66
.
SET
.