Get the current DSP exposure gain or the output level of CDS.
The camera with Day&Night Control Module and CDS is used for Day&Night detection supports the method to read the CDS level by this URL. Users could learn how the lighting condition is by reading the CDS level. The CDS output level will be normalized to 0~100 in this URL. The higher level of CDS, the lower lighting condition.
The exposure gain in some DSP in the camera could be read by this URL. The higher level of DSP exposure gain, the lower lighting condition. The exposure gain of DSP will be normalized to 0~100 in this URL. The higher value of exposure gain, the lower lighting condition.
The error message, EXPOSURE_GAIN_GET not found, will be returned if the encoders and camera do not support Day&Night function or there is no Day&Night detection function.
None
EXPOSURE_GAIN_GET='50'
or
ERROR: EXPOSURE_GAIN_GET not found
Valid
VIDEO_DAYNIGHT_MODE, DAY_GAIN_THD, NIGHT_GAIN_THD, VIDEO_DN_TYPE
http://ip:port/cgi-bin/encoder?USER=Admin&PWD=123456&EXPOSURE_GAIN_GET
or
http://ip:port/cgi-bin/cmd/encoder?EXPOSURE_GAIN_GET