Basler A102K, User Manual, Page: 43 / 133

Operation and Features
BASLER A102
k
3-7
DRAFT
3.2.1.3 Recommendations for Controlling Exposure
in ExSync Programmable Mode
When using the ExSync programmable mode to control exposure, several general guidelines
must be followed:
• The ExSync signal must toggle.
• The ExSync signal must remain high for at least 1 µs.
• The minimum programmable exposure time is 15 µs.
• The programmed exposure time must be less than the ExSync signal period.
• If the AOI and Vertical Binning features are not being used, the minimum ExSync signal
period is 67,500 µs.
• If the AOI feature is being used, the minimum ExSync signal period is equal to
1/Maximum Frame Rate where the maximum frame rate is determined by the
formula in Section
3.8.2.1 on page 3-28 .
• If the Vertical Binning feature is being used, the minimum ExSync signal period is equal to
1/Maximum Frame Rate where the maximum frame rate is determined by the
formula in Section
3.8.2.2 on page 3-28 .
• With very short exposures, use flash light to prevent smearing.
Assuming that these general guidelines are followed, the reaction of the camera to a rising ExSync
signal will be one of two cases. In case one (see Figure 3-6), the rising edge of ExSync occurs
while the camera is transmitting a previously captured frame, that is, when frame valid is high. In
case two (see Figure 3-7), the rising edge of ExSync occurs after the previously captured frame
has been transmitted, that is, when frame valid is low.