Andor Technology Neo sCMOS, Руководство по оборудованию

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FEATURES & FUNCTIONALITY
Neo
SECTION 2
Page 44
2.7.1.1 - Rolling Shutter Internal triggering (Non-Overlap mode)
Internal Trigger Mode allows the user to configure an exposure time and cycle time. For Internal Triggering
Non-overlap mode, the exact acquisition sequence depends on the exposure time and cycle time set as shown
below.
When the required exposure time is less than the time it takes to read out a frame (Short Exposures), the cycle
time is always defined by the time taken to read out a frame. In this scenario, the sensor is configured to
continually output signal frames. The exposure time which is set by the user determines the delay between
performing an internal rolling row reset and reading out a signal frame.
Table 7: Rolling Shutter Internal Triggering - Short Exposures Timing Parameters
Parameter Minimum Maximum
Exposure Time 1 Row 1 Frame
Cycle Time (1/Frame Rate) 1 Frame 1 Frame
Acquisition Start Delay 1 Frame
Table 8: Example timings
Sensor clock speed
200 MHz 400 MHz 560 MHz
Min Max Min Max Min Max
Exposure Time 26 µs 28 ms 13 µs 14 ms 10 µs 10 ms
Cycle Time (1/Frame Rate) 35.25 35.25 70.5 70.5 98.8 98.8
Acquisition Start Delay - 28 ms - 14 ms - 10 ms
ROLLING ROW RESET 3
Global Clear
Internal rolling row reset phase
Acquisition Start
Exposure time
Frame 1 Row 1
Exposure for Row n
Frame Read out phase
DISCARDED FRAME SIGNAL FRAME 1 SIGNAL FRAME 2
Cycle Time
Exposure time
Frame 1 Row n
Wait for start of
Internal Rolling Row
Reset for Frame 1
Exposure time
Frame 2 Row 1
ROLLING ROW RESET 2 ROLLING ROW RESET
1
1 n
ROLLING ROW RESET
FIRE
Exposure for Row 1
Start
Delay
Figure 14: Rolling Shutter Internal Triggering - Short Exposures