JAI CV-A11 Manuale Utente

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CV-A11
 
6.11. Partial scan readout mode 
 
This mode allows increased frame rate, as only a selected number of lines are read out. The 
vertical resolution is reduced as outlined below. Partial scan will operate in normal continuous 
mode and all trigger modes. 
 
 
 
Fig. 23. Partial scanning. 
 
The partial scanning settings are as follows: 
 
Readout format 
Frame rate  Effective lines 
ASCII-Command 
Full frame readout 
30 fps 
492 
 
SC=0 
1/2 partial readout 
58 fps 
240 
 
SC=1 
1/3 partial readout 
73 fps 
160 
 
SC=2 
1/6 partial readout 
124 fps 
  80 
 
SC=3 
 
To use this mode: 
Set function: 
Trigger mode to any 
TR=0 through TR=6 
 
 
 
 
Shutter mode to “Normal” or “Programmable” 
SM=0, SM=1 
  
 
 
 
Shutter Speed using fixed steps 
SH=0 through 7 
 
 
 
 
or Programmable exposure 
PE=1 through 1023 
 
 
 
 
Polarity and other functions 
 
Input:   
 
Ext. trigger to pin 5 on 6 pin connector (or 11 on 12 pin connector) 
 
 
 
 
Ext. VD to pin 7 on 12 pin connector. 
 
 
 
 
Ext. HD to pin 6 on 12 pin connector. (If used).  
 
 
Important notes on using this mode:
-
 
•  In order to minimize smear effects on the image, it is recommended to avoid strong light 
outside the active partial scanned region. 
 
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