Hitachi HV-D37A, HV-D27A operation manual Ext trigger

Models: HV-D27A HV-D37A

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13. Ext trigger

13. Ext trigger

The external trigger function is used with a frame grabber to obtain an image of an object at a desired exposure time. Settings can provide images at various timings. The exposure time can be controlled by the external trigger pulse width.

1)Trigger mode : Selects external trigger mode

Mode 1: Use for exposure time less than 2 fields.

Mode 2: Use for exposure time greater than 2 fields.

Note: Longer integration time tends to show increased noise and flaws in the CCD.

2)Delay time : Time from end of trigger pulse to camera sync reset

Setting range is 3 to 20 H. Can be used with a strobe light source to provide an optimum image with a frame grabber.

3)Trig polarity : Selects positive or negative trigger pulse polarity.

4)WE polarity : Selects WE pulse polarity

Selects pulse (WE) output synchronized to image obtained from the camera rear panel multi connector for 1 field or 1 frame. Use to match the interface of an external frame grabber or other equipment.

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Hitachi HV-D37A, HV-D27A operation manual Ext trigger