JAI CV-L105 User Manual

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CV-L105
 
6.2.3. External Trigger. Scan mode. 
In this mode, the camera requires an EXT TRIG signal to be issued to the camera. The trigger 
signal is typical taken from an encoder. The exposure time is equal to the trigger interval. On 
the EXT TRIG input positive going edge the ongoing integration period is terminated and charge 
is read out. At the same time it starts a new cycle. The exposure time is therefore dependant of 
the line rate. 
SHUTTER and SCAN parameters has no function here. 
The permitted range for the trigger interval is >2120 clk to ∞.  
Max scan rate is 14285 lines per second. 
Trigger width should be >4 clk. 
 
To use this mode: 
Set function: 
Trigger 
External 
 
 
 
 
Mode 
SCAN 
  
 
 
 
SHUTTER value 
No function 
 
SCAN value 
No function 
 
 
 
 
Clock, Binning and other functions 
 
Input:   
 
Ext. trigger through the LVDS connector  
   
 
 
 
 
 
 
Important notes on using this mode:
-
 
•  It is only recommended to use this mode when there is not change of speed in the object 
being scanned. If the speed of the object changes, the exposure time change. 
•  Do not apply a new trigger before the previous result has been read out. >2120 clk. 
 
 
 
 
  
30 MHz  1t=33.3 ns 
15 MHz   1t=66.6 ns 
Value in ( ) is for Binning
 
 
 
 
 
Fig. 14. Timing for external trigger scan mode 
 
 
 
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