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Page 14
Operation
• Internal Fast Reset Mode
• Internal Slow Reset Mode
Mode 0: | Normal Mode |
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Async Mode | Fast Mode |
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Async Mode: | Slow Mode |
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Async Mode 9: | External pulse width control mode | |||||||||||||
3.3.3 (a) External Pulse Width Control Mode |
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The |
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(VINIT). Set the dial switch to “9.” Apply a pulse- |
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width control VINIT signal generated from an external | (VINIT) |
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event trigger to the camera. The internal reset pulse |
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will be latched to Hd and at 5th HD timing from the |
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| 4.7k R1 | ||||||||||||
external pulse leading edge (negative going edge). The |
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CCD discharge pulse will be generated to clear the |
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| VINIT Input Schematic | ||||||||||||
images. The internal VINIT will be generated at the |
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following edge (positive going edge) of the external |
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pulse, resetting the internal timing including the video sync. The shutter speed is the same as the external pulse width, but the integration delays 5H from the leading edge. For the immediate reset option, please contact PULNiX.
FIGURE 10. External Pulse Width Mode
External
Pulse
Width
VINIT
Hd
Internal VINIT
Min 1.5H
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
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3H
Transfer Gate Pulse
Discharge pulse
6H
7 H X
Exposure Time
EXPOUT | Exposure Time | ||
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Composite
Video
For the progressive format, one frame of video output will start from the rising edge of the pulse width control. At async mode with external pulse input high, the video output will be disabled as the camera continues discharging the CCD image, providing black video only.