JAI CV-A33CL operation manual Auto Trigger Window of Interest

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CV-A33CL

6.1.6. Window of Interest

If a higher frame rate is wanted, it is possible to change the CMOS sensors sensing area to the window of interest. WS =1 for windows scan.

The X,Y start coordinate, the window width and height can be programmed.

WX can be in the range 0 to 657 WY can be in the range 0 to 490

WWcan be in the range 2 to 659. (WX + WW ≤ 659) WH can be in the range 3 to 493. (WY + WH ≤ 493) The frame rate will not increase if the width WW is reduced. The horizontal shift register need to be read out in its full length.

Minimum size for the window of interest is 2 (h) x 3 (v) pixels.

Maxim frame rate is 4953 fps.

For DVAL timing details for the window of interest, refer to 6.2.5 fig. 17 through 19.

6.1.7. Auto Trigger Window of Interest.

0,0 WX

WY

X,Y

 

 

WW

FVAL

WH

LVAL

DVAL

Fig. 12. Windows of Interest

The auto trigger function, TR=3 can be used as sensing device inside the camera field of view. The scanned area is from top of the image, and the height can be programmed with the command AT= --. The accumulation time is equal to the number of LVAL programmed with AT. The minimum height of the window of interest for the auto trigger function is the 3 top lines of the image. The height of the auto trigger window can be programmed in the range AT = 3 to

493.The window is always from the top of image. The read out time is the active number of LVAL + 9 LVAL.

Maxim frame rate is 5403 fps given by the 11 LVAL for a minimum window read out. (1 LVAL = 16.825 ∝sec.)

The connected frame grabber should be programmed to sense if objects 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, and a full frame is exposed with the same accumulation time as programmed for AT. 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 will start again.

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Contents CV-A33CL CV-A33CL General Main FeaturesStandard Composition Locations and Functions LocationsDigital Output Connector for Camera Link Pin Multi-connector DC-IN/TriggerPin Assignment Input and Output Circuits EEN outputCamera Link interface CV-A33 Camera Camera Link CableCmos Sensor Functions and OperationsBasic functions Pixel principleColumn Process Cmos Sensor principle diagramCV-A33 Cmos Sensor array Window of Interest Auto Trigger Window of InterestVertical timing Normal mode. Full frame Sensor layout and timingEffective image format Horizontal timing Normal mode. Full frameLval a-synchronous accumulation Lval a-synchronous accumulationTiming for window of interest Window of interestOutput of Timing Signals Input/Output of Timing SignalsInput of Timing Signals Trigger ModesEdge Pre-select Mode Continuous Operation Non triggeredVertical timing for edge pre-select min. exposure Pulse Width Control Mode Vertical timing for pulse width control min. exposureAuto trigger Mode Vertical timing for auto trigger functionSwitch setting inside Configuring the CameraOther Functions RS-232C control CV-A33CL command list Parameter RemarksCamera Control Tool for CV-A33 Window from camera control toolSpecifications External Appearance and DimensionsSpectral sensitivity Specification table CV-A33CLTypical Sensor Characteristics PrecautionsAppendix Users Record Users Mode Settings Users ModificationsCamera type
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