Eclipser Function (NTSC/EIA Models Only)
The eclipser function is used with an auto iris lens. When using a CCD imager with an auto iris lens in an area with minimal lighting contrasts, the auto iris lens closes, resulting in poor picture quality. The eclipser function distorts the signal to the auto iris lens, causing the lens to open wider and create sufficient lighting contrasts to prevent the silhouetting of figures. The eclipser function switch can be turned ON/OFF by moving the ECLP switch right or left. The ECLP is factory set to the OFF position. When the auto iris lens used is equipped with a response selector (AVERAGE/PEAK), always set the selector to AVERAGE.
Power Input Terminal
Eclipser Level Controls (NTSC/EIA Models Only)
a.Threshold Ð Sets the level for the brightest part of the picture. Anything brighter than this adjustment will be eclipsed.
b.Eclipse Ð Sets the brightness of the eclipsed area in the signal that controls the automatic iris lens.
c.Gray Ð Sets the brightness of the eclipsed area as viewed on a monitor.
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| ADAPTER |
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| LENS | VIDEO | |
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| LEVEL |
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| AGC | VIDEO | DC | LL |
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| ESC |
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| BLC |
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| ECLP |
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| LENS | VIDEO |
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| LEVEL |
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| OFF | ON |
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| AGC | VIDEO DC | LL | |
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| BLC |
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24VAC GRND | 24VAC | GND |
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| (NTSC/EIA MODELS) |
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Figure 1. Location and Function of Parts
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