CCIR (Non-interlaced / Field accumulation mode)
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TRIG |
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| 1H | TRIG in |
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1H more |
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EXT HD |
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INT HD |
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INT VD |
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1.5H | 7.5H |
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| 7.5H | 6.5H | 1.5H | 7.5H |
EEN |
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Exposure time |
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0.5H |
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WEN | 9H | 7.5H | 10H |
| 14H |
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CCD out |
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| Effective pixels |
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| No.10 to 251 |
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Video out |
| 25H |
| 287H | 25H |
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| Blanking |
| Effective video | Blanking |
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6.3.2. Pulse Width Control Mode
The pulse width control mode will only work in
The exposure is controlled by the low period of the ext. trigger pulse. The exposure starts at the first HD pulse after the falling edge of the ext. trigger pulse. The exposure ends at the first HD pulse after the rising edge of the ext. trigger. The Shutter can be controlled to be within the range from >1H (>64 µsec.) to <60 msec. The AC coupling causes the upper limit.
EEN (Exposure ENable) pulse and WEN (Write ENable) pulses are generated and output from the camera.
The EEN pulse indicates the exposure time. The EEN pulse is output from pin 2 of the
The WEN pulse indicates the time period of the effective video signal output and is useful for the timing and interfacing of external devices such as frame grabbers. The WEN pulse is output from pin 6 of the 6- pin multi connector. The signal level is 4.0
The video must be read out before a new trigger can be applied. The interval between trigger pulses must be longer than the time for 1 field + the shutter time. It is the limit for the field rate.
To use this mode
Set: | |
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| JP12 on PK8057 to OPEN |
Input: | Ext. trigger to pin 5 on |
| Ext. HD to pin 6 on |
| 75 Ohm termination is done with |
Refer to Timing Chart and Cautions on next page.
Detailed switch and jumper setting is described in “7. Mode Setting”.
For connections see “5. Pin Assignment”.
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