Rolling Shutter Internal Triggering (Overlap Mode)

Internal Triggering in Overlap Mode allows the user to perform an exposure and acquire images from the sensor simultaneously. This is achieved by starting a new exposure for a new frame while the current frame’s exposure is being read out from the sensor.

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 + 1 Row time. See below.

Internal Triggering “short” (overlap)

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 + 2 Row time. See below.

Internal Triggering “long” (overlap)

Parameter Minimum Maximum
Exposure 4 Rows 600 s
Cycle Time (1/Frame Rate)

Short Exposure: 1 Frame + 2 Rows

Long Exposure: Exposure + 2 Rows

FIRE Any low period ~5.6 μs in 12-bit and ~9.8 μs in 16-bit (1 Row)