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DS-24-0<strong>2M30</strong> and DS-25-0<strong>2M30</strong> <strong>User</strong>’s <strong>Manual</strong> 23<br />
Example 3: Trigger Period is Repetitive and Greater than Read Out Time.<br />
Electronic<br />
Shutter<br />
Data<br />
Transfer<br />
Electronic<br />
Shutter<br />
Exposure Time<br />
Readout<br />
<strong>Frame</strong> Period<br />
Exposure Time<br />
Readout<br />
<strong>Frame</strong> Time<br />
Trigger<br />
Example 4: Trigger Period is Intermittent and Occasionally Shorter than Read Out Time.<br />
Note: The Pantera SA<br />
<strong>2M30</strong> does not use Mode<br />
5.<br />
Electronic<br />
Shutter<br />
Data<br />
Transfer<br />
Exposure Time<br />
Electronic<br />
Shutter<br />
Exposure Time<br />
Readout<br />
Data<br />
Transfer<br />
Exposure time has been extended to<br />
correspond with read out time and does not<br />
follow the falling trigger pulse.<br />
Trigger<br />
Mode 6: External <strong>Frame</strong> Rate and Internal Exposure<br />
Time<br />
This mode differs according to the trigger rate and the exposure time setting. However,<br />
the following rules apply to any condition:<br />
• Any additional external triggers occurring during the exposure time will be ignored.<br />
• All non-ignored external triggers will pulse an electronic shutter to dump any current<br />
exposure data at the start of the trigger pulse and start the exposure time.<br />
• At the end of the exposure time, the collected data will be transferred to the read out<br />
area only if it is not already in the process of reading out. If read out is already in<br />
process, the exposure time will be extended until the read out is finished, as is<br />
illustrated in Example 6.<br />
DALSA 03-32-10157-02
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