Camera Features; Exposure Control; Internal Exposure Control - Electronic Shutter; External Exposure Control - Imperx Cheetah Series User Manual

Cheetah Python Cameras User Manual | Camera Link Interface

5 Camera Features

5.1 Exposure Control

5.1.1 Internal Exposure Control - Electronic Shutter

In global shutter, all pixels in the array are reset at the same time, allowed to collect signal
during the exposure time, and then transferred to a non-photosensitive region within each
pixel. Once the image is transferred to the non-photosensitive region, the readout of the
array begins. In this way, all pixels capture the image during the same time period, which
reduces any image artifacts appearing due to motion within the scene. The maximum
exposure is frame time dependent and the minimum exposure is about 40 microseconds.
The camera normally overlaps the exposure and readout times as shown in below.
Figure 39: Global Shutter with 8.33mS exposure time

5.1.2 External Exposure Control

The camera can use an external pulse to control exposure. The pulse duration determines
the exposure. In global shutter mode, the minimum exposure time is about 40
microseconds. Refer to section 5.5 Camera Triggering and 5.10 Input / Output Control.
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