
Mode Setting
For setting the shutter speed using the trigger pulse width
No HD/VD input (Internal synchronization)
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| Mode transition state | |||||||||||||||||
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| External input |
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| External trigger shutter operation |
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| inhibition area |
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| External trigger | ||||||||||||||||||||||||||||
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| Normal operation*3 |
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| (50 ms) |
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| shutter operation | ||||||||||||||||||||||||||||||||||||
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| 3 |
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Trigger*1 |
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| Trigger pulse width*3 |
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| Exposure |
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| Exposure |
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| Exposure time | |||||||||||||||||||||||||||||
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Internal HD*4 |
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| time (Te)*2 |
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| time (Te)*2 |
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| (Te)*2 | ||||||||||||||||||||
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| T: T=10 ∝s or more*5 |
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| T: |
| T=under 10 ∝s*5 | ||||||||||||||||||||
Video out |
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| *6 |
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WEN |
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| 250 H (EIA) |
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| 293 H (CCIR) |
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*1 This is a signal input from outside.
*2 Exposure time (Te)
Te = Trigger pulse width + 97 ∝sec (EIA) Te = Trigger pulse width + 120 ∝sec (CCIR) (The effective trigger pulse width for the external trigger shutter operation is between 2 ∝s and 1/4 s.)
*3 The normal operation state is chosen when the trigger pulse width is 1/3 s or more. The trigger falling edge restores the external trigger shutter operation. In this case, the area between the falling edge of a trigger pulse and the subsequent 50 ms period is an external trigger input inhibition area. There is no guarantee of operation for any triggers input in this period.
*4 The internal VD signals are output as long as there is no external input and the HD/VD signal I/O switch on the rear panel is set to INT.
*5 In the external trigger operation, the image is output for the internal VD falling edge after the trigger falling edge (1 and 2 in the figure). If the period from the trigger falling edge to the internal VD falling edge (T in the figure) is under 10 ∝s, there may be a delay of 1 VD in the output. (3 in the figure shows that the image is output for the next internal VD). In this case, see WEN since the image and WEN make up a pair. (The internal VD falling edge and the beginning of the equivalent pause in the V period of the SYNC have the same phase.)
*6 When the external trigger shutter mode changes to the normal operation mode, one WEN signal is output.
Note
An image is not output correctly when the next trigger is input before the image for the previous trigger is output.
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