![](/images/new-backgrounds/1286225/28622535x1.webp)
CV-A33CL
6.4.4. Auto trigger Mode
The auto trigger function, TR=3 can be used as sensing device inside the camera field of view. It sense in a programmable window from top of the image. The continuous output is sent to the frame grabber, which PC should be programmed to sense if an object is passing the window. The horizontal position and the signal threshold could be the programmed parameters. If an object passing is detected, a trigger is send to the camera. The resulting image, a full frame or windows scan, (depending of windows scan setting), is read out to the grabber, and the auto trigger function with fast scan of the programmed window will start again.
To use this mode: |
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Set function: | Trigger mode “Auto Trigger Mode” | TR=3 |
| “Auto Trigger” | AT=3 through 493 |
| “Windows” “Full” or “windows scan” | WS=0, WS=1 |
| Polarity and other functions |
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PC and grabber: | Detect trigger conditions |
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| Send a pulse width control trigger to the camera. |
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Input: | Ext. trigger to Camera Link or pin #10 on |
Important notes on using this mode.
•The exposure is equal the programmable parameter AT.
•The exposure time is the same for the auto trigger partial scanned frame and the resulting triggered frame read out.
•The duration of the trigger should be >1 LVAL to < 1 FVAL. (>16.8 ∝sec. to <8.3 msec.)
•Refer to 6.1.7. Auto Trigger Window of Interest.
•Max auto trigger frame rate is 5403 fps.
1 FVAL per iod
11L
TRG
FVAL
LVAL
Exposure per iod
EEN | E ffec t ive P ixe ls | ||
| 3L | 4L | 4L |
DATAOUT | 0 1 2 |
| 0 1 2 |
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DVAL
0 1 2 | 0 1 2 3 4 |
When Trgger is inpu t. |
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| 1 LVAL = 16.825∝s |
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1 FVAL per iod |
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502L |
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E ffec t ive L ines
493L |
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| 5L | 4L |
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8 | 9 | 0 | 1 2 |
| 0 1 2 | 0 1 2 | 0 1 2 | |||||||
8 | 8 | 9 | 9 | 9 |
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4 4 | 4 | 4 | 4 |
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Fig. 23. Vertical timing for auto trigger function
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