CV-A33CL
6.4.3. Pulse Width Control Mode
The exposure will start 28 ∝sec. after the trigger leading edge, and it stops and is read out at the trigger trailing edge. This mode will operate with full window or windows of interest scanning.
An EEN pulse will indicate the active accumulation time, and a FVAL pulse indicates that the resulting video is read out.
To use this mode: |
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Set function: | Trigger mode “Pulse Width Control” | TR=2 |
| “Windows” “Full” or “Windows scan” | WS=0, WS=1 |
| Polarity and other functions |
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Input: | Ext. trigger to Camera Link or pin 10 on | |
Important notes on using this mode.
•The duration of the trigger should be >1 LVAL to <237 FVAL. (>16.8 ∝sec. to <2.0sec.) The image quality can be reduced at maximum pulse width.
•A new trigger can be applied before FVAL is low as long as the exposure will be on for longer than the FVAL high period. Refer to 6.2.4
For timing refer to 6.2.2. and 6.2.3. Fig. 14. and fig 15.
For windows scan timing refer to 6.2.5 and fig.17 through fig.19.
For LVAL
1 LVAL = 16.825∝s
TRG
1 FVAL per iod
2L | 502L | |
498L | ||
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FVAL
LVAL
27 .6 μS
Exposure per iod
EEN
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| E f fec t ive L ines | |
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| 493L |
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DATAOUT | 0 1 2 3 4 …… |
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DVAL
2L
5L
4 | 8 | 8 | 4 | 8 | 9 | 4 | 9 | 0 | 4 | 9 | 1 | 4 | 9 | 2 |
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Fig. 22. Vertical timing for pulse width control min. exposure
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