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7.1.4 RESPONSE setting (for all AE modes)
This option determines the response speed of automatic exposure
system. This setting is particularly useful if the camera is installed for
car park or traffic monitoring. Slower response time could help user
to see the object in the car or license plate at night time.
To set this option, move the cursor to “RESPONSE” position. Adjust
the value by pressing “LEFT” or “RIGHT” button. Different value
represent different response time. The bigger the value, the slower
the response time. Range of response time can be set from 0.5
second (01) to 15 seconds (255). The factory default value is 0.5
second for general application.
7.1.5 AGCMIN setting (for all AE modes)
The AGCMIN means the minimum AGC level applied on the video
picture under normal lighting condition. To ensure optimum picture,
this option is normally set at 0 dB (factory default value). The ACMIN
can be set from 0 to 20 dB according to the system requirement.
To set AGCMIN, move the cursor to AGCMIN position on the AES
sub-menu, press “LEFT” or “RIGHT” to adjust the value.
7.1.6 SHUTLIM setting (for AES mode only)
The electronic shutter speed (under AES mode) is from 1/50 (1/60) to
1/100,000 sec. But if the system requires higher quality picture or
lower sensor smear, the fastest shutter speed can be set to different
limit (1/500, 1/1000, 1/2000, 1/5000, 1/10000, 1/20000, 1/50000,
1/100000 sec.). Factory default value is 1/100,000 sec.
7.2 AES LOW mode
The AES LOW mode helps to reduce blurring picture under low light
condition. Under this mode, the shutter speed is set at 1/100 sec. to
1/100,000 sec. for CCIR system and 1/120 sec. to 1/100,000 sec. for EIA
system.
7.3 AUTO IRIS mode
If an auto iris lens is used, this mode should be chosen to produce
optimum picture. With this mode, the shutter speed is fixed at 1/50 sec.
(CCIR) and 1/60 sec. (EIA). The exposure is controlled by AGC and auto
iris lens.
