JAI CV-A1-20 사용자 설명서

 

 

Fig. 8. Block diagram. 

Some of the primary camera functions need a general introduction before the operation modes 
are described. The list below shows the primary functions from the command list. 
 
 

SM  Shutter Mode 

Normal shutter, Programmable Exposure 

 

SH  Shutter Speed 

Off to 1/140,000 second 

 

PE  Programmable Exposure  1.3 H to 1023.3 H 

 

SC  Scanning Format 

Full frame, 1/2 partial, 1/3, 1/6 partial 

 

BI  Binning 

Off, vertical, horizontal, vertical + horizontal 

 

TR  Trigger Mode 

Normal, Edge, PWC, frame delay readout 

 

 

 

Long time exposure, start-stop, smearless (Edge) 

 HC 

HD 

Accumulation  Sync., 

async. 

 

The shutter SM can be set to normal (SM=0), where the exposure time is selected from 16 fixed 
step with the command SH, or programmable exposure (SM=1). The command PE allows 1023 
step with 1 line period resolution. (83.6 µs). Note that PE=0 and PE=1 results in 1.3H. 
The CCD scanning format SC can be selected between full or partial scanning. With partial 
scanning, only the vertical central part of the CCD sensor is read out with a higher frame rate. 
The partial scan is done by a fast dump read out of the lines in the vertical ccd register down to 
the top of the partial image. The partial part of the image is read out with normal speed.  The 
lines below the partial image are read out and dumped with a high speed.  
Some signal distortion can be expected below highlighted areas, (saturated areas). It is caused 

by limitation in the vertical ccd register transfer efficiency at high speed. 
  
 

Imaged scene

Partial scanning.

1380 pixels 

1/2 PS, 51

3 pixels

1/6 PS, 171 pixe

ls

1/3 PS, 341 pix

els

 
 
 
 
 

 
 
 

Fig. 9. Partial scanning. 

 

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