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11. TECHNICAL APPENDIX
28
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DXC-C33/C33P Product Information Manual
Long Term Exposure function
• When shooting very dark objects or objects in dark lighting conditions, you can manually set the
shutter speed to 1/60 of a second or more to allow extra light to accumulate on the CCD sensors,
resulting in enhanced sensitivity.
• By Synchronizing the WEN pulse of the camera signal
output with an external memory unit such as a frame
grabber unit/board, it is possible to obtain a still video
picture.
Versatile white balance
The DXC-C33/C33P has six types of white balance control modes.
a) AWB
The White balance is updated by pushing the WHITE button on the front panel.
b) ATW Normal and ATW Wide
ATW automatically adjusts the white balance in response to varying light conditions. The
DXC-C33/C33P has two ATW modes. Normal mode is effective for a color temperature
range of 2600K to 8000K, and Wide mode adopts wider range of 2400K to 9000K. The
Wide mode is useful under sodium lumps such as those used in traffic surveillance.
In addition, the DXC-C33/C33P has functions that make the area and response speed of
ATW adjustable, as with the AE function.
c) Manual
The white balance can be adjusted manually according to requirements using the Red and
Blue Gain Level.
d) Preset 3200K/5600K
There are two preset white balance modes: one at a color temperature of 3200K and one at
5600K. The 3200K mode is recommended when the camera is used indoors. The 5600K
mode is recommended when the camera is used outdoors during the daytime.
<Shutter-speed calculation in LTE mode>
Example: When the value is set to 5 FRM
(NTSC) 5 1/30 = 0.167 s
(PAL) 5 1/25 = 0.2 s
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