Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
<strong>Pantera</strong> <strong>SA</strong> DS -21-0<strong>2M30</strong> and DS-22-0<strong>2M30</strong> User’s Manual 27<br />
To set the camera exposure time, use the command:<br />
Syntax:<br />
set i<br />
Syntax Elements: i<br />
Integer number in µsecs. Allowable range is 41 – 1000000 µsecs.<br />
Notes: To read the current exposure time, use the command gcp.<br />
<br />
If you enter an invalid exposure time, the valid range of values will<br />
be displayed.<br />
Related Commands:<br />
sem, ssf<br />
Example: set 5500<br />
Shutter/Exposure Timing<br />
Because the <strong>Pantera</strong> <strong>SA</strong> <strong>2M30</strong> can be reading out a previous image while shuttering for<br />
the next image, there are some timing constrains imposed by the sensor specification on<br />
this timing. The result is that the actual frame time of the camera must be synchronized to<br />
the vertical clocking. The vertical clocks have a period of about 26µs so this produces an<br />
uncertainty window around the desired integration time to what is generated by the<br />
camera. The desired integration setting is accurate to +/- 1µs. The figure below shows<br />
how this uncertainty window is applied for various operating conditions.<br />
Figure 11: Integration Time Programming<br />
Vertical<br />
Clock<br />
line readout<br />
set by sensor spec<br />
26 µs Transfer<br />
Externa/Internall<br />
Trigger<br />
Electronic Shutter<br />
Uncertainty<br />
Window<br />
30 µs<br />
True Integration Time<br />
Internally programmed<br />
integration time.<br />
Desired Integration Time<br />
Uncertainty ± 1 µs<br />
Window<br />
DAL<strong>SA</strong> 03-32-10150-01
Change language