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Chapter 6
Advanced Topics
71
, there are 6 pixels perpendicular to the shift
register and the Window Size is 2 pixels high. The number of frames is 3. If the Vertical
Shift rate for the CCD is 1600 ns/row, the Shift time will be 3200 ns per frame.
illustrates the timing diagram for Free Run Kinetics mode.
Figure 6-16: Timing Diagram: Free Run
6.4.1.2
Triggered Modes
In Single Trigger mode, the camera requires only one trigger to initiate an entire series
of exposure-shift cycles as illustrated in
Figure 6-17: Timing Diagram: Single Trigger
When Acquire or Focus {Run} is clicked, the shutter (if there is an external X-ray shutter)
is opened and the camera uses the exposure time as entered in the software. The
trigger is applied at the Ext Sync connector on the rear of the PIXIS-XF. After the series
is complete, the shutter closes and the CCD is read out at normal speeds. Once the
readout is complete, the camera is ready for the next series of exposures. This timing is
shown in
, where a single External trigger pulse is used to collect a burst of 6
frames.
NOT SCAN
{Not Reading Out}
Shutter
opening
time
Shutter
closing
time
Readout
START ACQUIRE command from the software issent automatically
when ACQUIRE or FOCUS is clicked on in the software.
Exposure
Shift
SHUTTER
{Shutter Open}
START ACQUIRE
4
4
11-
011
2
_004
0
NOT SCAN
{Not Reading Out}
Shutter
opening
time
Shutter
closing
time
Readout
START ACQUIRE command from the software issent automatically
when ACQUIRE or FOCUS is clicked on in the software.
External Trigger
Exposure
Shift
SHUTTER
(Shutter Open)
START ACQUIRE
4
4
11-
011
2
_00
4
1
Содержание PIXIS-XF
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