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<strong>Pantera</strong> <strong>SA</strong> DS -21-0<strong>2M30</strong> and DS-22-0<strong>2M30</strong> User’s Manual 25<br />
Example 4: Trigger Period is Intermittent and Occasionally Shorter than Readout Time.<br />
Electronic<br />
Shutter<br />
Data<br />
Transfer<br />
Electronic<br />
Shutter<br />
Data<br />
Transfer<br />
Exposure Time<br />
Exposure Time<br />
Readout<br />
Exposure time has been extended to<br />
correspond with readout 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 readout<br />
area only if it is not already in the process of reading out. If readout is already in<br />
process, the exposure time will be extended until the readout is finished, as is<br />
illustrated in Example 6.<br />
• If you are using an area of interest while operating in mode 6, see section 3.10<br />
Defining an Area of Interest (AOI) for more timing information.<br />
Example 5: Trigger Period is Repetitive and Greater than Readout Time<br />
Electronic<br />
Shutter<br />
Data<br />
Transfer<br />
Electronic<br />
Shutter<br />
Readout<br />
Exposure Time<br />
Programmable Period<br />
Exposure Time<br />
Readout<br />
External<br />
Trigger<br />
External<br />
Trigger<br />
DAL<strong>SA</strong> 03-32-10150-01
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