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Long Exposures
When the required exposure time is greater than the time it takes to read out a frame (Long Exposures), the cycle
time is defined by the exposure time.
Initially, the entire sensor is held in a global clear state to ensure that there is no charge build-up on the sensor.
Global Clear goes LOW and the first frame read out is initiated. This frame is discarded as it does not contain the
correct exposure period. Reading out this first frame effectively begins the first exposure. When the exposure period
has completed, a signal frame read out phase begins. As each row is read out, the new exposure for that row
begins.
Figure 18: Rolling Shutter Internal Triggering (Overlap Mode) (Long Exposures)
Table 14:
Rolling Shutter Internal Triggering (Overlap Mode- Long Exposures) Timing Parameters
Parameter
Minimum
Maximum
Exposure
1 Row
30 s
Cycle Time (1/Frame Rate)
Exposure Time
Exposure Time + 1 Frame
FIRE low period
1 Row
-
Summary of Contents for Zyla sCMOS 4.2 PLUS
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